diff --git a/api/cbor_gen.go b/api/cbor_gen.go
index 80392b212..fd2cb30b4 100644
--- a/api/cbor_gen.go
+++ b/api/cbor_gen.go
@@ -42,7 +42,7 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Channel"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Channel")); err != nil {
+	if _, err := cw.WriteString(string("Channel")); err != nil {
 		return err
 	}
 
@@ -58,7 +58,7 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Vouchers"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Vouchers")); err != nil {
+	if _, err := cw.WriteString(string("Vouchers")); err != nil {
 		return err
 	}
 
@@ -83,7 +83,7 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("WaitSentinel"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("WaitSentinel")); err != nil {
+	if _, err := cw.WriteString(string("WaitSentinel")); err != nil {
 		return err
 	}
 
@@ -163,13 +163,32 @@ func (t *PaymentInfo) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v paych.SignedVoucher
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						b, err := cr.ReadByte()
+						if err != nil {
+							return err
+						}
+						if b != cbg.CborNull[0] {
+							if err := cr.UnreadByte(); err != nil {
+								return err
+							}
+							t.Vouchers[i] = new(paych.SignedVoucher)
+							if err := t.Vouchers[i].UnmarshalCBOR(cr); err != nil {
+								return xerrors.Errorf("unmarshaling t.Vouchers[i] pointer: %w", err)
+							}
+						}
+
+					}
 				}
-
-				t.Vouchers[i] = &v
 			}
 
 			// t.WaitSentinel (cid.Cid) (struct)
@@ -214,7 +233,7 @@ func (t *SealedRef) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Size"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Size")); err != nil {
+	if _, err := cw.WriteString(string("Size")); err != nil {
 		return err
 	}
 
@@ -230,7 +249,7 @@ func (t *SealedRef) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Offset"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Offset")); err != nil {
+	if _, err := cw.WriteString(string("Offset")); err != nil {
 		return err
 	}
 
@@ -246,7 +265,7 @@ func (t *SealedRef) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("SectorID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("SectorID")); err != nil {
+	if _, err := cw.WriteString(string("SectorID")); err != nil {
 		return err
 	}
 
@@ -369,7 +388,7 @@ func (t *SealedRefs) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Refs"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Refs")); err != nil {
+	if _, err := cw.WriteString(string("Refs")); err != nil {
 		return err
 	}
 
@@ -447,13 +466,22 @@ func (t *SealedRefs) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v SealedRef
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						if err := t.Refs[i].UnmarshalCBOR(cr); err != nil {
+							return xerrors.Errorf("unmarshaling t.Refs[i]: %w", err)
+						}
+
+					}
 				}
-
-				t.Refs[i] = v
 			}
 
 		default:
@@ -484,7 +512,7 @@ func (t *SealTicket) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Epoch"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Epoch")); err != nil {
+	if _, err := cw.WriteString(string("Epoch")); err != nil {
 		return err
 	}
 
@@ -506,7 +534,7 @@ func (t *SealTicket) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Value"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Value")); err != nil {
+	if _, err := cw.WriteString(string("Value")); err != nil {
 		return err
 	}
 
@@ -639,7 +667,7 @@ func (t *SealSeed) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Epoch"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Epoch")); err != nil {
+	if _, err := cw.WriteString(string("Epoch")); err != nil {
 		return err
 	}
 
@@ -661,7 +689,7 @@ func (t *SealSeed) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Value"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Value")); err != nil {
+	if _, err := cw.WriteString(string("Value")); err != nil {
 		return err
 	}
 
@@ -794,7 +822,7 @@ func (t *PieceDealInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("DealID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("DealID")); err != nil {
+	if _, err := cw.WriteString(string("DealID")); err != nil {
 		return err
 	}
 
@@ -810,7 +838,7 @@ func (t *PieceDealInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PublishCid"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PublishCid")); err != nil {
+	if _, err := cw.WriteString(string("PublishCid")); err != nil {
 		return err
 	}
 
@@ -832,7 +860,7 @@ func (t *PieceDealInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("DealProposal"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("DealProposal")); err != nil {
+	if _, err := cw.WriteString(string("DealProposal")); err != nil {
 		return err
 	}
 
@@ -848,7 +876,7 @@ func (t *PieceDealInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("DealSchedule"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("DealSchedule")); err != nil {
+	if _, err := cw.WriteString(string("DealSchedule")); err != nil {
 		return err
 	}
 
@@ -864,7 +892,7 @@ func (t *PieceDealInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("KeepUnsealed"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("KeepUnsealed")); err != nil {
+	if _, err := cw.WriteString(string("KeepUnsealed")); err != nil {
 		return err
 	}
 
@@ -1027,7 +1055,7 @@ func (t *SectorPiece) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Piece"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Piece")); err != nil {
+	if _, err := cw.WriteString(string("Piece")); err != nil {
 		return err
 	}
 
@@ -1043,7 +1071,7 @@ func (t *SectorPiece) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("DealInfo"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("DealInfo")); err != nil {
+	if _, err := cw.WriteString(string("DealInfo")); err != nil {
 		return err
 	}
 
@@ -1150,7 +1178,7 @@ func (t *DealSchedule) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("EndEpoch"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("EndEpoch")); err != nil {
+	if _, err := cw.WriteString(string("EndEpoch")); err != nil {
 		return err
 	}
 
@@ -1172,7 +1200,7 @@ func (t *DealSchedule) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("StartEpoch"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("StartEpoch")); err != nil {
+	if _, err := cw.WriteString(string("StartEpoch")); err != nil {
 		return err
 	}
 
diff --git a/blockstore/cbor_gen.go b/blockstore/cbor_gen.go
index b8ebdb474..221f13676 100644
--- a/blockstore/cbor_gen.go
+++ b/blockstore/cbor_gen.go
@@ -52,9 +52,11 @@ func (t *NetRpcReq) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.Cid {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.Cid: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 
 	// t.Data ([][]uint8) (slice)
@@ -151,12 +153,25 @@ func (t *NetRpcReq) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.Cid failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.Cid[i]: %w", err)
+				}
+
+				t.Cid[i] = c
+
+			}
 		}
-		t.Cid[i] = c
 	}
 
 	// t.Data ([][]uint8) (slice)
@@ -183,6 +198,9 @@ func (t *NetRpcReq) UnmarshalCBOR(r io.Reader) (err error) {
 			var maj byte
 			var extra uint64
 			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
 			maj, extra, err = cr.ReadHeader()
 			if err != nil {
@@ -350,7 +368,7 @@ func (t *NetRpcErr) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Msg))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Msg)); err != nil {
+	if _, err := cw.WriteString(string(t.Msg)); err != nil {
 		return err
 	}
 
diff --git a/build/actors/v12.tar.zst b/build/actors/v12.tar.zst
index 0c48ea426..a08d9935d 100644
Binary files a/build/actors/v12.tar.zst and b/build/actors/v12.tar.zst differ
diff --git a/build/builtin_actors_gen.go b/build/builtin_actors_gen.go
index fdc1650a1..1bbd84ac2 100644
--- a/build/builtin_actors_gen.go
+++ b/build/builtin_actors_gen.go
@@ -95,27 +95,27 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzaceb37hxeuoo5rgf6ansrdl2ykm5v5zp6kireubn4orcopr67jbxv6k"),
 	},
 }, {
-	Network: "butterflynet",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzacebwfbz63adpfgjtub2tg7yrosmxtyc4cmi55lvrv6rqnurzviuzlg"),
+	Network:      "butterflynet",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzacebheb3qrt45gl2mrugnys5rm56xerarnjcvulf55rgdc2ejyp3v24"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzacea55xtffuyilgsriwilzkezlddbjb5yqsoy7ejjx5lhuvwniev2zs"),
-		"cron":             MustParseCid("bafk2bzacebp4sc3finb4tz7imuw7qkk7gvyaprs5rohpuomu3f4x4sub7zy4e"),
-		"datacap":          MustParseCid("bafk2bzacea5occ7omwxfrqohsage677sift7vn5ogcyxn3g7e6rmz3wcnfbj4"),
-		"eam":              MustParseCid("bafk2bzacebogeqkimibpwigydinqrn4j7vd23pscs4de5yfrpf2ltppcqrtec"),
-		"ethaccount":       MustParseCid("bafk2bzacecs3afxqq4fzrvycqvpgdqcvqbojoa3nihokqox4f6dv6jmz23dpg"),
-		"evm":              MustParseCid("bafk2bzacebbsfhhwiv6n4k5buz2xdu3yff4qs43hxlibb335jmdx5xc44wv6g"),
-		"init":             MustParseCid("bafk2bzacecuog2pnpc6r55suclspolpnrrnxykcgc33lhlz7n3fgjy22vn7de"),
-		"multisig":         MustParseCid("bafk2bzaceczgigux7xwsfpg2e5zyjpvpay32hn47gpn7l4jhbofii7rqgxteg"),
-		"paymentchannel":   MustParseCid("bafk2bzacect2psbtgvrvasxef46lvk7kitpdcbfkg5u3nac72pobqcmfilhh4"),
+		"account":          MustParseCid("bafk2bzaceaax3tggwg2eaqsydltyzvrk4xsgxwpxos73lrqmsbgutv67ht7sm"),
+		"cron":             MustParseCid("bafk2bzacedyltatovipojuyijrm4unqwjayb5kwtzvrog55igtbgpn66ogk56"),
+		"datacap":          MustParseCid("bafk2bzacec73alnbszpcf5tu7llh4mvsjhsyrtbw75sp35loan55t22b6meda"),
+		"eam":              MustParseCid("bafk2bzacedodqunug2sa22ne5uy3vmjcjz5va7vqojcekpd5ijingir65ukfg"),
+		"ethaccount":       MustParseCid("bafk2bzaceawhkdswuxsp32mwujvwheiybpepfv2ngfioeh7ho2ruzgp3olwsq"),
+		"evm":              MustParseCid("bafk2bzacebhpftearnnb3qtxygwgvedrxuazznwyhd3wpbrc2zoytj3ewg3ia"),
+		"init":             MustParseCid("bafk2bzaceasfksgh65pulxgg5uhl5e72euac25kizfzouppssmw3zreo6t64s"),
+		"multisig":         MustParseCid("bafk2bzacecaeld3tux6vqzndc5b4igc4k3db3wjkyzrxgobb3fshir65vzdfi"),
+		"paymentchannel":   MustParseCid("bafk2bzaceao2tiixjrlvnewl5q6dr6krpehdob6kk2hga6tyrz4wbwpsmutg6"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzacecwudnigxo45gd6khqqeowquzlguj4fkkstccnmnziovutav4fey6"),
-		"storagemarket":    MustParseCid("bafk2bzacecfmp3jh6i3csrtyr2zyzhzpkmgelyykznin6lmyagicwf7gjpk5y"),
-		"storageminer":     MustParseCid("bafk2bzacea7esq47iaiu6ecukvmtlgmv7oforo4f456p2gerumapbykh4cjf4"),
-		"storagepower":     MustParseCid("bafk2bzacec6eyeyvmh5hnb6aqhmpns3ry4isxxmtqfcdlfhgatbandlfh3tzu"),
-		"system":           MustParseCid("bafk2bzacecs7cbnk4rd2qke4jrag5evyq4a4qlp4h5mbycgoiunqrgtnz7bnk"),
-		"verifiedregistry": MustParseCid("bafk2bzacebwqzbqvaxyr4wlrwj7l4zg7ymu6pcqaoltnodmgjgynuizc56y4m"),
+		"reward":           MustParseCid("bafk2bzaceahzrkoebsaa4gezbzyabqpuf7fhw5gnn7o6s6uvdat4mscb2mgcs"),
+		"storagemarket":    MustParseCid("bafk2bzacebmwd5brgj5fn3b7qqxsvxs4cbjerznib6gqk4etdyibyj2q5jexi"),
+		"storageminer":     MustParseCid("bafk2bzacebouts42ha42nngelbgnhvsry4k7b3jojphhovl7xtwf3t243c22o"),
+		"storagepower":     MustParseCid("bafk2bzacebtljpw53z4feru2oggywxlv6b47qxceeazg7rlrkvlo2tjdyhqku"),
+		"system":           MustParseCid("bafk2bzacebhmn5wuaylovcuathhjbvgbi7zwk7eg6jtgttymwqemk4adrtvkq"),
+		"verifiedregistry": MustParseCid("bafk2bzacedw7zfs5tb6jrp2za3mcdkpi5xicxbvfgu4v3ycrshbelvlpjr7nq"),
 	},
 }, {
 	Network: "calibrationnet",
@@ -201,27 +201,27 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzaceceoo5jlom2zweh7kpye2vkj33wgqnkjshlsw2neemqkfg5g2rmvg"),
 	},
 }, {
-	Network: "calibrationnet",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzaceaipkdiplb5geo2plfrpaxisen46lqbzn4lt7ffmsdwdps4zb6424"),
+	Network:      "calibrationnet",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzacec46zrw3audq7bcubljpjxabibpa6oxxi2bi6mx7dexzef6corc42"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzacedgtgdr2oj2jwdp6kapxvqvuec5s5awvbcjre3npygezasdl5yb52"),
-		"cron":             MustParseCid("bafk2bzacea4k2cgqv2aefs2rz3xd2ky25wlqoo6r3fdytlmhsf4emzqpvid2s"),
-		"datacap":          MustParseCid("bafk2bzaceab4367hss5dd4a2q5oodmtpml5nnrnybtmf52wgxfb4cw7voxu62"),
-		"eam":              MustParseCid("bafk2bzaceac3qbafk2ucohhurwqmoolanf33tiwtyicukiecboj3zshbd7ao2"),
-		"ethaccount":       MustParseCid("bafk2bzacedy2lbg6qrr5z3vzyuz3qeaids7t4pvdu7ohk34e7a56xtijmhj4u"),
-		"evm":              MustParseCid("bafk2bzacebqx3jxucwtjo5j7b5mupuybrzamq2gzd5t6lohwxzga7vuc6zhag"),
-		"init":             MustParseCid("bafk2bzacebvqeg7ka4ogomupjnikaziqf37huz4jgvoctqwiobffdad3e2d3y"),
-		"multisig":         MustParseCid("bafk2bzacechwpp2kvsjvrj4ry5ploj2ejkfo2zvzq4umxy7tberjaregp6kdo"),
-		"paymentchannel":   MustParseCid("bafk2bzacedfhhvzjzhrpokf2jt7es4jq25ryagzf4qy3txyffvje23vih75i4"),
+		"account":          MustParseCid("bafk2bzaceazknqujefijifwqjt5bp6osspbuvkxl2fqzdgqkbco3jseuzcpmm"),
+		"cron":             MustParseCid("bafk2bzaceatqs5ypt4b5fnnqtvbkjbmgbm4kvpjoow7xt4wdvv4tcuhsl3rh4"),
+		"datacap":          MustParseCid("bafk2bzacebgicoy4uc5yt4iaefdg63fbfaocqda3hkidhjepjyx5ybzg6gd5q"),
+		"eam":              MustParseCid("bafk2bzacebfiy2lmycixi2lm2gzm7laqwmq6ljwwzrrdzlg5sjd5av2mxhyza"),
+		"ethaccount":       MustParseCid("bafk2bzacecqf4tnx7h3b5yv6mmqwip2tpwv5apoi5fu7r5xcsggg62aopmbh6"),
+		"evm":              MustParseCid("bafk2bzacebhmpzjmeqitktlrxeqgv5t3k4jx6adpdgul5nbgjtl42sz6qydci"),
+		"init":             MustParseCid("bafk2bzacecvr75cexy7pavybgpbqnr6qikugz4oqmon5plt642uce5djpkw7u"),
+		"multisig":         MustParseCid("bafk2bzacea57gzxplsk2aqvmoqltvf3b2mep67fy2xs6acrlglphetrw2sn2g"),
+		"paymentchannel":   MustParseCid("bafk2bzacecsc63ffhhkwwo4gadbt6mviynjx7pstb76fqbbxk34m56cwmz3go"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzaceby3y6qhaunjqmwrvegqh7ouj4ua7advg6eyzxcj43spaypeomjgg"),
-		"storagemarket":    MustParseCid("bafk2bzacedgdck3s5asnn5di5ijg22gpqnxj7bynekbycvydwqgemqwzzmere"),
-		"storageminer":     MustParseCid("bafk2bzacebwecbrksabe5w25iop6ysgwk57etueo67vnwsyny3nkzbnk6xshq"),
-		"storagepower":     MustParseCid("bafk2bzacedam2fr6yyo5qhief6mxkxz7b53xgflntwgch6ujbc3wp35h4g4sa"),
-		"system":           MustParseCid("bafk2bzacecfs5d6ktybdq6jeqiomte6tewufptk72qc6gstn6hb3gzkyedn3a"),
-		"verifiedregistry": MustParseCid("bafk2bzaceamkpusx5yglkb5oghqeihugs6zyouzxz6jjmk5s4qs4bovnpldgg"),
+		"reward":           MustParseCid("bafk2bzacec4nr5wns7zcokbrmtubqhahqzr2dn32cokzoughuqpibvbd7bcdi"),
+		"storagemarket":    MustParseCid("bafk2bzacedu6ztca5cca656hp5vci2jdd6amnr4qng6zmhsoxjpiw3rvdoozw"),
+		"storageminer":     MustParseCid("bafk2bzacedes62nulops6p46n7uys4wsidss3nne4wt3m37l5jnu2jfgbttww"),
+		"storagepower":     MustParseCid("bafk2bzacedvyxyw2gdqili4t6px4ggl5faxk25aihbm7culeqjzqixrsrsw42"),
+		"system":           MustParseCid("bafk2bzaceaqc4ckrlttyyq4shkog4ymeulli5drxwvnxxwi5lcx5t4mdelgw6"),
+		"verifiedregistry": MustParseCid("bafk2bzaceb7hrconkdpbzrsnu3hhblxuum7jrlrswj7dafhnl5xutblnl4kci"),
 	},
 }, {
 	Network: "caterpillarnet",
@@ -316,27 +316,27 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzacedaws3or3twy45ltcxucgvqijsje4x675ph6vup2w35smlfneamno"),
 	},
 }, {
-	Network: "caterpillarnet",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzaceaq2fun5mrdea6zrpbctybhbmjnhfwb42xryabxchdyjewdlembu4"),
+	Network:      "caterpillarnet",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzaceb3dwdchw7pc7vkqfo3pscy6gcxplilisjrzg4pzsa7rbbe3xrdn4"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzacecvsfyecyerrkhb4wtdahiwltc47abn2an5bxktkef2wxzevuh2vg"),
-		"cron":             MustParseCid("bafk2bzacedgofnfgnlrcsihb2dvjacekhlz6k4txc4wof3wm2n3yj2wv2exii"),
-		"datacap":          MustParseCid("bafk2bzacedd7j6fmon4k4pepohsm5nsvdr52xagbkbroeouid2fkgkpwug32e"),
-		"eam":              MustParseCid("bafk2bzacecbita45luvxs7v4lmwqj3pv2z5qbjeugt7vl6ct46kvd3zl53fzo"),
-		"ethaccount":       MustParseCid("bafk2bzaceaz7esfh3itqdxiraogqtair3jlxevb2quuxfhgm3bxyers5s2mgw"),
-		"evm":              MustParseCid("bafk2bzaceacl3yet4pmuyzzfu6bnqtcslqjbinpjlhgwltu6iklqqmytkxjro"),
-		"init":             MustParseCid("bafk2bzaceb2iuaasrij2232x4a35glhisddmmlykqwao723urapgacqyrcixk"),
-		"multisig":         MustParseCid("bafk2bzacedqjjgilxkqjupkwppmolav5757ngdv4vdg4hitth4kamsv272m6k"),
-		"paymentchannel":   MustParseCid("bafk2bzaced67dmxjymwype5ugx3i2kdugh56eyew6s3rgn5uc7fhjr5tq4dwg"),
+		"account":          MustParseCid("bafk2bzaceaxcwzahxj6i6hoyurmdes3tnx7japxy7lwhfc7e6l5nyrq6gev2e"),
+		"cron":             MustParseCid("bafk2bzaceaeiof4orsftdo75kfdnhk26yshedda2wx77fozhvecvln42e5vgm"),
+		"datacap":          MustParseCid("bafk2bzaced36kvsmpx3j4bu63b4xfadmh4xk6htlz4rqzut3f5areqtsztdn6"),
+		"eam":              MustParseCid("bafk2bzacedjrkr4wxkfqxdbi5y3hegnuls3jnhq22hm4rqtfgwtv4vikdouue"),
+		"ethaccount":       MustParseCid("bafk2bzacedb5nc4ahq4gi7kcc6vw377zv6mj2ych6mbefw7r5ts5hg5ayfssm"),
+		"evm":              MustParseCid("bafk2bzacebchr2p5shvmj56mggikjlzc4kwwgvinw7jarxy7xliyf2kukkmqs"),
+		"init":             MustParseCid("bafk2bzaceas2x7zp23xidychzaiddirum62gszcatksy5372ymaxjhlgfsl4w"),
+		"multisig":         MustParseCid("bafk2bzacebmj5lueub6rffjb3jfmf4spf5rtilfeyqjkwwrr4s3fx357dzsv4"),
+		"paymentchannel":   MustParseCid("bafk2bzacebejg54jpzbd3swpe4brxfxxml76np2iqa25drmomz2xnqhybti4c"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzacedqwx7ntb2lz4l6oorvlv732oxt6ots7wfzkjeyn6wmfmasr3opvu"),
-		"storagemarket":    MustParseCid("bafk2bzacecprrqtbvrxrbviv4x5iu7xcbf4vm3jkftsauh7dfx5lab3z4z4es"),
-		"storageminer":     MustParseCid("bafk2bzacecesuudr3q3do4semhdtrj3j4tjaxheqz3hrqtkja42ceszxzubwe"),
-		"storagepower":     MustParseCid("bafk2bzacednsnvf6hrjoagqnvdoa74hu7m4fbrvezqhfsq6r7n3vmv5kjoc5a"),
-		"system":           MustParseCid("bafk2bzaceczxdboh4nwcou4lkfnxzaixqhhlpq2ypyql73p55l2qlkeeuliei"),
-		"verifiedregistry": MustParseCid("bafk2bzacebr3pjfzmpkauu3qs2c2ow53frjux564zjawb5tclacll23omulzk"),
+		"reward":           MustParseCid("bafk2bzaceduxa6lkazdaabrofo63qq56uoctrgfamuvqkxri5vb36b6zlyg62"),
+		"storagemarket":    MustParseCid("bafk2bzacec577tsgcmvoz5errtc5hlgesw52jjk3l72ey6zbkowntssxcjvys"),
+		"storageminer":     MustParseCid("bafk2bzacedgltxtcdxqq6rea7zi45y25b4tsvufaumlhi3d6wsjk7knobbfew"),
+		"storagepower":     MustParseCid("bafk2bzacedcjabfskycamxgzlkpupztnp5cbwebhirho3x5ntykye5gvl4c7m"),
+		"system":           MustParseCid("bafk2bzacear2j7rlfgirczggjejukdib4gmryyumknbfekgq6nqmaadds2ayc"),
+		"verifiedregistry": MustParseCid("bafk2bzacebxfct6htl2zqutzifxbzv7esuzdyaebuxforkucskbxqa5qle5q6"),
 	},
 }, {
 	Network: "devnet",
@@ -422,27 +422,27 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzacebdqi5tr5pjnem5nylg2zbqcugvi7oxi35bhnrfudx4y4ufhlit2k"),
 	},
 }, {
-	Network: "devnet",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzaceagonf7bxmnyf7hdkw6hktywrc4qachnpocas2mhayuyucdpsi6de"),
+	Network:      "devnet",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzacebie7spydnd3nbx2e3muo6qqex2d7zsttphf7gamx7iog7tmfgsru"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzacebzxft7ljumqlwrj6kbwaiblwftfigvde6zpk2jlfy6kfab3eivvw"),
-		"cron":             MustParseCid("bafk2bzacedzx7dxt2vj27gc7rzi73qshakdjd4r4h7rjlft573kql6uuuoxze"),
-		"datacap":          MustParseCid("bafk2bzacecut7lxz2bbfq5r2izmhbnbebdivwkfr45lfy262oiaqietmxow54"),
-		"eam":              MustParseCid("bafk2bzaceadhudlti25kcsiuxvpjtipjh6p7wr66m76q25lcha56vxhe7iio6"),
-		"ethaccount":       MustParseCid("bafk2bzacec2a4fcnhgvnei2eeafevcanbtmzxndprejlgigesmoyyq3vxjrta"),
-		"evm":              MustParseCid("bafk2bzaceaikthq6wlk47covv55ddwjupvomcj6nmj6gfdpqemri2ymimtgeq"),
-		"init":             MustParseCid("bafk2bzaceaka7tbqwgi3ogp2kcu5r7meo4l7zflycyezlck7lv5yp32ttxqyo"),
-		"multisig":         MustParseCid("bafk2bzacebrhrgjid4mi2ch6fm7aqgwlqqt22vk54dv3o4a3iqg6scp2a6irs"),
-		"paymentchannel":   MustParseCid("bafk2bzacecpiztcznkmreklw4kmfcydiwbnmb3pkptrr47dy6vwa6awecodzq"),
+		"account":          MustParseCid("bafk2bzacebwcirmvgh4exhmud7ov57amc26r5udwcpidgyq3dl7w4bhwqqbqw"),
+		"cron":             MustParseCid("bafk2bzaced2dapvep3tdbghg2mcnypfumo5qsnwnmyzo7s64vnpffgm3osose"),
+		"datacap":          MustParseCid("bafk2bzaceac3vs2l2yivsygafquxkx24muyelbtx7nlemyxnq2rzrzgr747q4"),
+		"eam":              MustParseCid("bafk2bzacebcqukj4p5eciomzalofmei6n66ac2ykqjsqzfxjirnhgihtwiwp6"),
+		"ethaccount":       MustParseCid("bafk2bzaceahyfc5gkr62imqypew3u56svyauwihz3xau33iy2vvfqknri7zoo"),
+		"evm":              MustParseCid("bafk2bzacedm3y7djcc3a2dplb27qdzv4pqd42qelsqjpb4ouop5m7sc4rnsge"),
+		"init":             MustParseCid("bafk2bzacecytopo2myozwqwdic5r6j7awzqcwp6jo3psyinm5sjutkiap5oxa"),
+		"multisig":         MustParseCid("bafk2bzacebydlta5mzpqmulee2zz36c7knkkh2auu5zpqvh6auyd4ymywja6k"),
+		"paymentchannel":   MustParseCid("bafk2bzaceafk4hkecxh3crczmwv2bcx62hucz6zunma6l6re6f5boxq67psv4"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzaceag34lek46iifugz7bqx5pjoszasp2ldkqnbfesvpwczhlnl2giiu"),
-		"storagemarket":    MustParseCid("bafk2bzacea7574mwdfgpsgucvgmpg6upblalqh4dgk6lurzxugj7vrygmbiga"),
-		"storageminer":     MustParseCid("bafk2bzaceclulipufdxs46niodn7peetgd7uhrxenw7sjiilsutquj5ac3rjs"),
-		"storagepower":     MustParseCid("bafk2bzacednqafym2q3o3t63dirrrlurtiyau5vxlup7anc4k7nxkyxdayegm"),
-		"system":           MustParseCid("bafk2bzacea4bi63eonaqh3ol2dx5neiw245gh3h4bc5nyourvsqfwo32go3bc"),
-		"verifiedregistry": MustParseCid("bafk2bzacebxo7xv4gruof2p36pvdt4nqlrjypewemz35m5rvkta2unfjkhfgg"),
+		"reward":           MustParseCid("bafk2bzacedfqmdaop5e2hpg7jwj65d5wvvzox7qoilbzvruenosdshiyjfbke"),
+		"storagemarket":    MustParseCid("bafk2bzacedbxsezacrv3nmwmlksmuvtlg4gpru5fz4pajkm6dogkohae5aarg"),
+		"storageminer":     MustParseCid("bafk2bzacea3encig7orwntdkry64mlillvejonxzuczxj4tamtpi3rcmnbr5m"),
+		"storagepower":     MustParseCid("bafk2bzacedctrzu4b3a6tmaech5cmhoifobqx4eqhbbjt3yu4dmh25i7f5z6y"),
+		"system":           MustParseCid("bafk2bzacecvw2nad46yz37uex3apkovcfnbo47a3bevwlelrbrgsebrxsr24y"),
+		"verifiedregistry": MustParseCid("bafk2bzacebxqyfj7ewxm4xxewe5jj4ry7n6gttzzj6wsznm7kcecskqdqskzw"),
 	},
 }, {
 	Network: "hyperspace",
@@ -551,27 +551,27 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzacedej3dnr62g2je2abmyjg3xqv4otvh6e26du5fcrhvw7zgcaaez3a"),
 	},
 }, {
-	Network: "mainnet",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzacedowjygm2fy5yryyyjcww6znqngoz4rildgouuj6uk35z7a2u5gmc"),
+	Network:      "mainnet",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzacebo7pbwl7oifbj2vavy6qbpbwyqruhkhtqswibc6yr2iruepupzpo"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzacedzaf3mtu57zkzg64druer5yyckyjxcqzp6j7d5aub3bhtukocges"),
-		"cron":             MustParseCid("bafk2bzaceadfvanqrxocz4meefl45p7gwf37oboufk3ek54qdpnlz3vkpecw2"),
-		"datacap":          MustParseCid("bafk2bzacecvy53fceivrvl3zks37y5nx5a6u24h72toebefrnwcl4nxkla6j2"),
-		"eam":              MustParseCid("bafk2bzacedpxcqfmommw6yvqmdqryb2lloyou72ga6b3daph56gntgbrachdg"),
-		"ethaccount":       MustParseCid("bafk2bzaceaqqvv22w5664fbktnzo2pqlli3mwr6sqsm6bn2tmcrecyudclz66"),
-		"evm":              MustParseCid("bafk2bzaceb3aktnl7hgsr7nr2murlyqzecmxcs5t3wiatdsxfgmctxh44uzcg"),
-		"init":             MustParseCid("bafk2bzaceb4dichby4a2dilbzspkxpklbittslnnuhfe32ouotcydbaxjkyoc"),
-		"multisig":         MustParseCid("bafk2bzaced2dvtci3pemxonxkfnyeew2fxsmzqcaun2kqkcf7eyot7k6k23zq"),
-		"paymentchannel":   MustParseCid("bafk2bzacec64pr3ekvcokfx4z6nyl7ge4gk6ddlnv6vcpfnw3llsfxlukqbbi"),
+		"account":          MustParseCid("bafk2bzacedpb57hg3k3qxrozhl4gm7exxy6dmmseqkkdptme42f3nznnilx4g"),
+		"cron":             MustParseCid("bafk2bzaced4f33wsbenjj3u323vm5hkkssto4jccjzytsnigmulg3vsxxmzca"),
+		"datacap":          MustParseCid("bafk2bzacedu3pigkb7wqyw4lulidtuj4ubnyitxog2ynp2av2bkhghbmleni4"),
+		"eam":              MustParseCid("bafk2bzacebjqrptl6263twwlvibojfg2m4prvuzb23olztnsxfzkhpkbrwoig"),
+		"ethaccount":       MustParseCid("bafk2bzacearkzkdgfm367yykho3i5nttjocdg4w3zgfxolt53bln4rvj4qzhi"),
+		"evm":              MustParseCid("bafk2bzaceczvko7yucqm2gf2hobkio2s47ln4oczfx3ly2q624xdoumotcyhw"),
+		"init":             MustParseCid("bafk2bzacedvak3dp6sugmtgd6kdg3acxtlrm7zs3petcb323bs52tmpypjlqk"),
+		"multisig":         MustParseCid("bafk2bzacedcx4o6qm7uyge6uoddfhva5oumcr3isbbbqmxycr7zvf3rrxndtm"),
+		"paymentchannel":   MustParseCid("bafk2bzacebuacnyucqmpi5mgtzw2twdvtf4dyvawqjxlowxrbfm4kgqmp7tly"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzacedwhowydy4bzqvixahs3dfofzuxgdmgtmbbsymgn7ml5vcx4noyb6"),
-		"storagemarket":    MustParseCid("bafk2bzaceczbmzpnucj4jtk3i5pcygf4cnl3sd4yfpvlpwed2vte25q7crevw"),
-		"storageminer":     MustParseCid("bafk2bzaceddf5eoidcxj3ujktarujfgvujy2ry2uhr56ah4cl5ppyonx4mib6"),
-		"storagepower":     MustParseCid("bafk2bzacebm7akrycbzyzlkophliwlemt72qhald2f67yfzzmcjzrz4vyanpa"),
-		"system":           MustParseCid("bafk2bzacedksemrry4htnpmlx2wxp7e6qm733zqkfxiqpm4g34g7cqkqm55tg"),
-		"verifiedregistry": MustParseCid("bafk2bzacea4rrffnjxdqtdluf2jgawvcksx7yhilru4bzsbdxafyxuxpbtous"),
+		"reward":           MustParseCid("bafk2bzacecyrtaxq3y4fyb4oxj2yo2eiyoji3myvicxk5bnwcornmtl6ro7by"),
+		"storagemarket":    MustParseCid("bafk2bzacecj43gwtjlbuacou3zgo4g4milgzm4dgrammttlz3y5plyjubsu5c"),
+		"storageminer":     MustParseCid("bafk2bzacebyoi7zwm7qukjlbjox3urbbgjvsnwm3fnepa643p3oawxjauekjw"),
+		"storagepower":     MustParseCid("bafk2bzacecm36o2vdwqiueyqnnlwh5q7pfctpcockqathrnjy47iotgshmxrc"),
+		"system":           MustParseCid("bafk2bzacecsyyjhphhjaateyabzkubunv76yy2au4srs2ia35davww4tjxr7k"),
+		"verifiedregistry": MustParseCid("bafk2bzacecscdqn3dcs74mawfjijeqs73q2irjg7phzec52h4wcu6s3ma7smi"),
 	},
 }, {
 	Network: "testing",
@@ -657,27 +657,27 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzacebp2r56wxadvfzpfbmqwfi3dlnwpmoc5u4tau2hfftbkuafkhye64"),
 	},
 }, {
-	Network: "testing",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzacea2qiia5hnmpryp4oxeijq4rxex2wbutksvlnfqqic3ioeh3hk4wk"),
+	Network:      "testing",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzacebfy4wz5kxtblv33vs25jkuqoxmdhy2wm7jzk6jvno4wz22nkzyeu"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzaceb432jqlwz2tfafqbmyrowojd6lhevcyg6i2gkot2a4742n4vld3c"),
-		"cron":             MustParseCid("bafk2bzacedl5w6nowgjzrul5mllwtfhoxqr7mmovu74egitkx5v5gqunmeyrk"),
-		"datacap":          MustParseCid("bafk2bzaceb3763jtueduhikfakm5uu7lglom5yd3kyqtjxdrgmbtmjdk3utyy"),
-		"eam":              MustParseCid("bafk2bzaceb3fijyw3y7jcqojsos4nmhj2n5kg7jpmyh74pqic7vowvyevyrfe"),
-		"ethaccount":       MustParseCid("bafk2bzaceb6je4q53fuvnsbubr2ozpow6jphugjfafcrdtrycpoe3742erldq"),
-		"evm":              MustParseCid("bafk2bzaceawy7ntpzraa7zpb3jn3ins5v7z2a2bafdg6hfijme3pzeibmqudo"),
-		"init":             MustParseCid("bafk2bzacecjnj4dupkeg6vfa4d5abhwzlgti5lxj62d76ebxuwi72qfswzsxe"),
-		"multisig":         MustParseCid("bafk2bzacebrasao55cae4t6ss7lkmybglsbc5ep23k2xemyw4tmkklf47xah4"),
-		"paymentchannel":   MustParseCid("bafk2bzacebfse3hrno6joffqhr7m3lqqxkbcm4h35b53zxfa7u7vuuq7avhde"),
+		"account":          MustParseCid("bafk2bzacec2mxouocy7h3ohahbexu6pbzencarfm2q423y5glxyaclgso52qk"),
+		"cron":             MustParseCid("bafk2bzaceas5abq2a4zayl54xvo4o7mzzsao6kjixoztcrrv3rrt4tbrde2um"),
+		"datacap":          MustParseCid("bafk2bzacedfmgyuognrzp3ul3h6czmhr3aunj5da25uhpwbutxaona6shz34g"),
+		"eam":              MustParseCid("bafk2bzacecez7diadkz54aqsvxaixjq2n4ekxkuswfawywx6rbzo5h6z7i54q"),
+		"ethaccount":       MustParseCid("bafk2bzacedxkhuauw3tlh7aezjyi2n7ufs2ai5dho6levo4d7dj2wqz2lp5re"),
+		"evm":              MustParseCid("bafk2bzacectw2lb73ukdtqwmep6c77ejlkx2gkxqizugzufavzosdgde5pv3i"),
+		"init":             MustParseCid("bafk2bzacecfqtx6xoapxan5n2r6krkx5fj6dnrzb57hhcg4p4v7nbuxf2kdjk"),
+		"multisig":         MustParseCid("bafk2bzacea5zddhue64kkj7iev75lvf3i2n5qvjnku7unq2psjnsgbjkv2aee"),
+		"paymentchannel":   MustParseCid("bafk2bzaceap4nhkt224mhekarcyr5ehs4bjhkc62oezumxheveucph6wgx5ok"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzacedbx7lduyouqad2r32kugdfvornk25zvwhgua5u3b3qr44mcafxgm"),
-		"storagemarket":    MustParseCid("bafk2bzacebvnjqvwqbvdrv47ti4fqjada4qynnph7i3dcg7pwcq44kksxiqr4"),
-		"storageminer":     MustParseCid("bafk2bzacednlenhzjjxgue7z2vsjbnwt2pplyvh3t3ok2a6vimjdqiq4hnnkc"),
-		"storagepower":     MustParseCid("bafk2bzacedizg46rjo3os6mopuvnyftlecfixsf5eijz2u4os3zzsepoqhrqw"),
-		"system":           MustParseCid("bafk2bzacedvnvuuxvaednmoqtm7vo2rzdwjkwmn46oheck5xqy7i2txrwsjci"),
-		"verifiedregistry": MustParseCid("bafk2bzacedisnzlqdxpuopf22ya77n54jto6vi3lf7fxfcdqnchmhemlychca"),
+		"reward":           MustParseCid("bafk2bzacecuyuetbjfmcbg5x6o2rbb7q3jy2baxmuzvvtobvpcudaou44zp2c"),
+		"storagemarket":    MustParseCid("bafk2bzacedm3wtouilvpjlx4xbsp2ktakb53muvt5dhvzwx2vycxmsrcckjh4"),
+		"storageminer":     MustParseCid("bafk2bzacea4j45eonhbk7tho4oztrsz5skkracyuuten6oebfxevbiilp7lms"),
+		"storagepower":     MustParseCid("bafk2bzacecx7kmxkac6qr3amf4pihmps3lbknypqwqbqeao3ccjhuoathlvbi"),
+		"system":           MustParseCid("bafk2bzaceconbwh6sfqtfuxbx2at2lcdallils5yowfov3sbganufyegih4ns"),
+		"verifiedregistry": MustParseCid("bafk2bzacealytv5rsiozhcbpscuvigur6s2wlexkec55pzitudji2iy3kaofy"),
 	},
 }, {
 	Network: "testing-fake-proofs",
@@ -763,26 +763,26 @@ var EmbeddedBuiltinActorsMetadata []*BuiltinActorsMetadata = []*BuiltinActorsMet
 		"verifiedregistry": MustParseCid("bafk2bzacebp2r56wxadvfzpfbmqwfi3dlnwpmoc5u4tau2hfftbkuafkhye64"),
 	},
 }, {
-	Network: "testing-fake-proofs",
-	Version: 12,
-
-	ManifestCid: MustParseCid("bafy2bzacebejjwowoaa3kkss27eksvehslp7khhrtl33dr6fz2v3tznkne25c"),
+	Network:      "testing-fake-proofs",
+	Version:      12,
+	BundleGitTag: "v12.0.0-dev.2",
+	ManifestCid:  MustParseCid("bafy2bzacedury3anneawcx2mj27e6k4kacib3gtkm3q6xg6mf7wz3drlm4vpo"),
 	Actors: map[string]cid.Cid{
-		"account":          MustParseCid("bafk2bzaceb432jqlwz2tfafqbmyrowojd6lhevcyg6i2gkot2a4742n4vld3c"),
-		"cron":             MustParseCid("bafk2bzacedl5w6nowgjzrul5mllwtfhoxqr7mmovu74egitkx5v5gqunmeyrk"),
-		"datacap":          MustParseCid("bafk2bzaceb3763jtueduhikfakm5uu7lglom5yd3kyqtjxdrgmbtmjdk3utyy"),
-		"eam":              MustParseCid("bafk2bzaceb3fijyw3y7jcqojsos4nmhj2n5kg7jpmyh74pqic7vowvyevyrfe"),
-		"ethaccount":       MustParseCid("bafk2bzaceb6je4q53fuvnsbubr2ozpow6jphugjfafcrdtrycpoe3742erldq"),
-		"evm":              MustParseCid("bafk2bzaceawy7ntpzraa7zpb3jn3ins5v7z2a2bafdg6hfijme3pzeibmqudo"),
-		"init":             MustParseCid("bafk2bzacecjnj4dupkeg6vfa4d5abhwzlgti5lxj62d76ebxuwi72qfswzsxe"),
-		"multisig":         MustParseCid("bafk2bzacebrasao55cae4t6ss7lkmybglsbc5ep23k2xemyw4tmkklf47xah4"),
-		"paymentchannel":   MustParseCid("bafk2bzacebfse3hrno6joffqhr7m3lqqxkbcm4h35b53zxfa7u7vuuq7avhde"),
+		"account":          MustParseCid("bafk2bzacec2mxouocy7h3ohahbexu6pbzencarfm2q423y5glxyaclgso52qk"),
+		"cron":             MustParseCid("bafk2bzaceas5abq2a4zayl54xvo4o7mzzsao6kjixoztcrrv3rrt4tbrde2um"),
+		"datacap":          MustParseCid("bafk2bzacedfmgyuognrzp3ul3h6czmhr3aunj5da25uhpwbutxaona6shz34g"),
+		"eam":              MustParseCid("bafk2bzacecez7diadkz54aqsvxaixjq2n4ekxkuswfawywx6rbzo5h6z7i54q"),
+		"ethaccount":       MustParseCid("bafk2bzacedxkhuauw3tlh7aezjyi2n7ufs2ai5dho6levo4d7dj2wqz2lp5re"),
+		"evm":              MustParseCid("bafk2bzacectw2lb73ukdtqwmep6c77ejlkx2gkxqizugzufavzosdgde5pv3i"),
+		"init":             MustParseCid("bafk2bzacecfqtx6xoapxan5n2r6krkx5fj6dnrzb57hhcg4p4v7nbuxf2kdjk"),
+		"multisig":         MustParseCid("bafk2bzacea5zddhue64kkj7iev75lvf3i2n5qvjnku7unq2psjnsgbjkv2aee"),
+		"paymentchannel":   MustParseCid("bafk2bzaceap4nhkt224mhekarcyr5ehs4bjhkc62oezumxheveucph6wgx5ok"),
 		"placeholder":      MustParseCid("bafk2bzacedfvut2myeleyq67fljcrw4kkmn5pb5dpyozovj7jpoez5irnc3ro"),
-		"reward":           MustParseCid("bafk2bzacedbx7lduyouqad2r32kugdfvornk25zvwhgua5u3b3qr44mcafxgm"),
-		"storagemarket":    MustParseCid("bafk2bzacebvnjqvwqbvdrv47ti4fqjada4qynnph7i3dcg7pwcq44kksxiqr4"),
-		"storageminer":     MustParseCid("bafk2bzacebhb4prwkgqzcdvq3vziuk4n4t74fnedgpok44cakkzc47a774oou"),
-		"storagepower":     MustParseCid("bafk2bzacebzijogcuowc7bgwb76vqhq5hkpczianyeg6bqspd4isajn66w6mu"),
-		"system":           MustParseCid("bafk2bzacedvnvuuxvaednmoqtm7vo2rzdwjkwmn46oheck5xqy7i2txrwsjci"),
-		"verifiedregistry": MustParseCid("bafk2bzacedisnzlqdxpuopf22ya77n54jto6vi3lf7fxfcdqnchmhemlychca"),
+		"reward":           MustParseCid("bafk2bzacecuyuetbjfmcbg5x6o2rbb7q3jy2baxmuzvvtobvpcudaou44zp2c"),
+		"storagemarket":    MustParseCid("bafk2bzacedm3wtouilvpjlx4xbsp2ktakb53muvt5dhvzwx2vycxmsrcckjh4"),
+		"storageminer":     MustParseCid("bafk2bzacebfmhawnn6ms2phshtxusa5vjv4vfhz47oaxjnu3sop5eyrm3okho"),
+		"storagepower":     MustParseCid("bafk2bzacebz3ez3uzhmxfeb7mstwfbdstawwcfkxby77co66fvkjyedwv7fle"),
+		"system":           MustParseCid("bafk2bzaceconbwh6sfqtfuxbx2at2lcdallils5yowfov3sbganufyegih4ns"),
+		"verifiedregistry": MustParseCid("bafk2bzacealytv5rsiozhcbpscuvigur6s2wlexkec55pzitudji2iy3kaofy"),
 	},
 }}
diff --git a/chain/actors/policy/policy.go b/chain/actors/policy/policy.go
index d680def37..d927f369f 100644
--- a/chain/actors/policy/policy.go
+++ b/chain/actors/policy/policy.go
@@ -560,8 +560,53 @@ func GetWinningPoStSectorSetLookback(nwVer network.Version) abi.ChainEpoch {
 	return ChainFinality
 }
 
-func GetMaxSectorExpirationExtension() abi.ChainEpoch {
-	return miner12.MaxSectorExpirationExtension
+func GetMaxSectorExpirationExtension(nv network.Version) (abi.ChainEpoch, error) {
+	v, err := actorstypes.VersionForNetwork(nv)
+	if err != nil {
+		return 0, xerrors.Errorf("failed to get actors version: %w", err)
+	}
+	switch v {
+
+	case actorstypes.Version0:
+		return miner0.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version2:
+		return miner2.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version3:
+		return miner3.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version4:
+		return miner4.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version5:
+		return miner5.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version6:
+		return miner6.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version7:
+		return miner7.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version8:
+		return miner8.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version9:
+		return miner9.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version10:
+		return miner10.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version11:
+		return miner11.MaxSectorExpirationExtension, nil
+
+	case actorstypes.Version12:
+		return miner12.MaxSectorExpirationExtension, nil
+
+	default:
+		return 0, xerrors.Errorf("unsupported network version")
+	}
+
 }
 
 func GetMinSectorExpiration() abi.ChainEpoch {
diff --git a/chain/actors/policy/policy.go.template b/chain/actors/policy/policy.go.template
index 3eb39836a..c3ce4a9d9 100644
--- a/chain/actors/policy/policy.go.template
+++ b/chain/actors/policy/policy.go.template
@@ -223,8 +223,20 @@ func GetWinningPoStSectorSetLookback(nwVer network.Version) abi.ChainEpoch {
 	return ChainFinality
 }
 
-func GetMaxSectorExpirationExtension() abi.ChainEpoch {
-	return miner{{.latestVersion}}.MaxSectorExpirationExtension
+func GetMaxSectorExpirationExtension(nv network.Version) (abi.ChainEpoch, error) {
+	v, err := actorstypes.VersionForNetwork(nv)
+	if err != nil {
+		return 0, xerrors.Errorf("failed to get actors version: %w", err)
+	}
+	switch v {
+		{{range .versions}}
+			case actorstypes.Version{{.}}:
+				return miner{{.}}.MaxSectorExpirationExtension, nil
+		{{end}}
+	default:
+		return 0, xerrors.Errorf("unsupported network version")
+	}
+
 }
 
 func GetMinSectorExpiration() abi.ChainEpoch {
diff --git a/chain/exchange/cbor_gen.go b/chain/exchange/cbor_gen.go
index d1eb271e9..e66b6d798 100644
--- a/chain/exchange/cbor_gen.go
+++ b/chain/exchange/cbor_gen.go
@@ -43,9 +43,11 @@ func (t *Request) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.Head {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.Head: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 
 	// t.Length (uint64) (uint64)
@@ -106,12 +108,25 @@ func (t *Request) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.Head failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.Head[i]: %w", err)
+				}
+
+				t.Head[i] = c
+
+			}
 		}
-		t.Head[i] = c
 	}
 
 	// t.Length (uint64) (uint64)
@@ -173,7 +188,7 @@ func (t *Response) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.ErrorMessage))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.ErrorMessage)); err != nil {
+	if _, err := cw.WriteString(string(t.ErrorMessage)); err != nil {
 		return err
 	}
 
@@ -260,13 +275,32 @@ func (t *Response) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v BSTipSet
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.Chain[i] = new(BSTipSet)
+					if err := t.Chain[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.Chain[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.Chain[i] = &v
 	}
 
 	return nil
@@ -317,9 +351,11 @@ func (t *CompactedMessages) MarshalCBOR(w io.Writer) error {
 			return err
 		}
 		for _, v := range v {
-			if err := cw.CborWriteHeader(cbg.MajUnsignedInt, uint64(v)); err != nil {
+
+			if err := cw.WriteMajorTypeHeader(cbg.MajUnsignedInt, uint64(v)); err != nil {
 				return err
 			}
+
 		}
 	}
 
@@ -354,9 +390,11 @@ func (t *CompactedMessages) MarshalCBOR(w io.Writer) error {
 			return err
 		}
 		for _, v := range v {
-			if err := cw.CborWriteHeader(cbg.MajUnsignedInt, uint64(v)); err != nil {
+
+			if err := cw.WriteMajorTypeHeader(cbg.MajUnsignedInt, uint64(v)); err != nil {
 				return err
 			}
+
 		}
 	}
 	return nil
@@ -405,13 +443,32 @@ func (t *CompactedMessages) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v types.Message
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.Bls[i] = new(types.Message)
+					if err := t.Bls[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.Bls[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.Bls[i] = &v
 	}
 
 	// t.BlsIncludes ([][]uint64) (slice)
@@ -438,6 +495,9 @@ func (t *CompactedMessages) UnmarshalCBOR(r io.Reader) (err error) {
 			var maj byte
 			var extra uint64
 			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
 			maj, extra, err = cr.ReadHeader()
 			if err != nil {
@@ -457,17 +517,27 @@ func (t *CompactedMessages) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for j := 0; j < int(extra); j++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				maj, val, err := cr.ReadHeader()
-				if err != nil {
-					return xerrors.Errorf("failed to read uint64 for t.BlsIncludes[i] slice: %w", err)
+					{
+
+						maj, extra, err = cr.ReadHeader()
+						if err != nil {
+							return err
+						}
+						if maj != cbg.MajUnsignedInt {
+							return fmt.Errorf("wrong type for uint64 field")
+						}
+						t.BlsIncludes[i][j] = uint64(extra)
+
+					}
 				}
-
-				if maj != cbg.MajUnsignedInt {
-					return xerrors.Errorf("value read for array t.BlsIncludes[i] was not a uint, instead got %d", maj)
-				}
-
-				t.BlsIncludes[i][j] = uint64(val)
 			}
 
 		}
@@ -493,13 +563,32 @@ func (t *CompactedMessages) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v types.SignedMessage
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.Secpk[i] = new(types.SignedMessage)
+					if err := t.Secpk[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.Secpk[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.Secpk[i] = &v
 	}
 
 	// t.SecpkIncludes ([][]uint64) (slice)
@@ -526,6 +615,9 @@ func (t *CompactedMessages) UnmarshalCBOR(r io.Reader) (err error) {
 			var maj byte
 			var extra uint64
 			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
 			maj, extra, err = cr.ReadHeader()
 			if err != nil {
@@ -545,17 +637,27 @@ func (t *CompactedMessages) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for j := 0; j < int(extra); j++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				maj, val, err := cr.ReadHeader()
-				if err != nil {
-					return xerrors.Errorf("failed to read uint64 for t.SecpkIncludes[i] slice: %w", err)
+					{
+
+						maj, extra, err = cr.ReadHeader()
+						if err != nil {
+							return err
+						}
+						if maj != cbg.MajUnsignedInt {
+							return fmt.Errorf("wrong type for uint64 field")
+						}
+						t.SecpkIncludes[i][j] = uint64(extra)
+
+					}
 				}
-
-				if maj != cbg.MajUnsignedInt {
-					return xerrors.Errorf("value read for array t.SecpkIncludes[i] was not a uint, instead got %d", maj)
-				}
-
-				t.SecpkIncludes[i][j] = uint64(val)
 			}
 
 		}
@@ -642,13 +744,32 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v types.BlockHeader
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.Blocks[i] = new(types.BlockHeader)
+					if err := t.Blocks[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.Blocks[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.Blocks[i] = &v
 	}
 
 	// t.Messages (exchange.CompactedMessages) (struct)
diff --git a/chain/gen/genesis/miners.go b/chain/gen/genesis/miners.go
index 7905fd253..0bac282d2 100644
--- a/chain/gen/genesis/miners.go
+++ b/chain/gen/genesis/miners.go
@@ -125,7 +125,11 @@ func SetupStorageMiners(ctx context.Context, cs *store.ChainStore, sys vm.Syscal
 		sectorWeight []abi.StoragePower
 	}, len(miners))
 
-	maxPeriods := policy.GetMaxSectorExpirationExtension() / minertypes.WPoStProvingPeriod
+	maxLifetime, err := policy.GetMaxSectorExpirationExtension(nv)
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("failed to get max extension: %w", err)
+	}
+	maxPeriods := maxLifetime / minertypes.WPoStProvingPeriod
 	rawPow, qaPow := big.NewInt(0), big.NewInt(0)
 	for i, m := range miners {
 		// Create miner through power actor
diff --git a/chain/types/cbor_gen.go b/chain/types/cbor_gen.go
index a9040613f..fe8e7e3fe 100644
--- a/chain/types/cbor_gen.go
+++ b/chain/types/cbor_gen.go
@@ -91,9 +91,11 @@ func (t *BlockHeader) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.Parents {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.Parents: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 
 	// t.ParentWeight (big.Int) (struct)
@@ -249,13 +251,22 @@ func (t *BlockHeader) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v BeaconEntry
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				if err := t.BeaconEntries[i].UnmarshalCBOR(cr); err != nil {
+					return xerrors.Errorf("unmarshaling t.BeaconEntries[i]: %w", err)
+				}
+
+			}
 		}
-
-		t.BeaconEntries[i] = v
 	}
 
 	// t.WinPoStProof ([]proof.PoStProof) (slice)
@@ -278,13 +289,22 @@ func (t *BlockHeader) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v proof.PoStProof
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				if err := t.WinPoStProof[i].UnmarshalCBOR(cr); err != nil {
+					return xerrors.Errorf("unmarshaling t.WinPoStProof[i]: %w", err)
+				}
+
+			}
 		}
-
-		t.WinPoStProof[i] = v
 	}
 
 	// t.Parents ([]cid.Cid) (slice)
@@ -307,12 +327,25 @@ func (t *BlockHeader) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.Parents failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.Parents[i]: %w", err)
+				}
+
+				t.Parents[i] = c
+
+			}
 		}
-		t.Parents[i] = c
 	}
 
 	// t.ParentWeight (big.Int) (struct)
@@ -1318,9 +1351,11 @@ func (t *BlockMsg) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.BlsMessages {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.BlsMessages: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 
 	// t.SecpkMessages ([]cid.Cid) (slice)
@@ -1332,9 +1367,11 @@ func (t *BlockMsg) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.SecpkMessages {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.SecpkMessages: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 	return nil
 }
@@ -1401,12 +1438,25 @@ func (t *BlockMsg) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.BlsMessages failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.BlsMessages[i]: %w", err)
+				}
+
+				t.BlsMessages[i] = c
+
+			}
 		}
-		t.BlsMessages[i] = c
 	}
 
 	// t.SecpkMessages ([]cid.Cid) (slice)
@@ -1429,12 +1479,25 @@ func (t *BlockMsg) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.SecpkMessages failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.SecpkMessages[i]: %w", err)
+				}
+
+				t.SecpkMessages[i] = c
+
+			}
 		}
-		t.SecpkMessages[i] = c
 	}
 
 	return nil
@@ -1463,9 +1526,11 @@ func (t *ExpTipSet) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.Cids {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.Cids: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 
 	// t.Blocks ([]*types.BlockHeader) (slice)
@@ -1538,12 +1603,25 @@ func (t *ExpTipSet) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.Cids failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.Cids[i]: %w", err)
+				}
+
+				t.Cids[i] = c
+
+			}
 		}
-		t.Cids[i] = c
 	}
 
 	// t.Blocks ([]*types.BlockHeader) (slice)
@@ -1566,13 +1644,32 @@ func (t *ExpTipSet) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v BlockHeader
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.Blocks[i] = new(BlockHeader)
+					if err := t.Blocks[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.Blocks[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.Blocks[i] = &v
 	}
 
 	// t.Height (abi.ChainEpoch) (int64)
@@ -1933,13 +2030,22 @@ func (t *Event) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v EventEntry
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				if err := t.Entries[i].UnmarshalCBOR(cr); err != nil {
+					return xerrors.Errorf("unmarshaling t.Entries[i]: %w", err)
+				}
+
+			}
 		}
-
-		t.Entries[i] = v
 	}
 
 	return nil
@@ -1972,7 +2078,7 @@ func (t *EventEntry) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Key))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Key)); err != nil {
+	if _, err := cw.WriteString(string(t.Key)); err != nil {
 		return err
 	}
 
@@ -2103,7 +2209,7 @@ func (t *GasTrace) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Name))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Name)); err != nil {
+	if _, err := cw.WriteString(string(t.Name)); err != nil {
 		return err
 	}
 
@@ -2756,13 +2862,32 @@ func (t *ExecutionTrace) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v GasTrace
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.GasCharges[i] = new(GasTrace)
+					if err := t.GasCharges[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.GasCharges[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.GasCharges[i] = &v
 	}
 
 	// t.Subcalls ([]types.ExecutionTrace) (slice)
@@ -2785,13 +2910,22 @@ func (t *ExecutionTrace) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v ExecutionTrace
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				if err := t.Subcalls[i].UnmarshalCBOR(cr); err != nil {
+					return xerrors.Errorf("unmarshaling t.Subcalls[i]: %w", err)
+				}
+
+			}
 		}
-
-		t.Subcalls[i] = v
 	}
 
 	return nil
diff --git a/cmd/lotus-miner/sectors.go b/cmd/lotus-miner/sectors.go
index 5c8cf6b87..6fd0fd709 100644
--- a/cmd/lotus-miner/sectors.go
+++ b/cmd/lotus-miner/sectors.go
@@ -846,7 +846,12 @@ var sectorsCheckExpireCmd = &cli.Command{
 
 		for _, sector := range sectors {
 			MaxExpiration := sector.Activation + policy.GetSectorMaxLifetime(sector.SealProof, nv)
-			MaxExtendNow := currEpoch + policy.GetMaxSectorExpirationExtension()
+			maxExtension, err := policy.GetMaxSectorExpirationExtension(nv)
+			if err != nil {
+				return xerrors.Errorf("failed to get max extension: %w", err)
+			}
+
+			MaxExtendNow := currEpoch + maxExtension
 
 			if MaxExtendNow > MaxExpiration {
 				MaxExtendNow = MaxExpiration
@@ -1185,7 +1190,12 @@ var sectorsExtendCmd = &cli.Command{
 				newExp = abi.ChainEpoch(cctx.Int64("new-expiration"))
 			}
 
-			maxExtendNow := currEpoch + policy.GetMaxSectorExpirationExtension()
+			maxExtension, err := policy.GetMaxSectorExpirationExtension(nv)
+			if err != nil {
+				return xerrors.Errorf("failed to get max extension: %w", err)
+			}
+
+			maxExtendNow := currEpoch + maxExtension
 			if newExp > maxExtendNow {
 				newExp = maxExtendNow
 			}
@@ -1755,7 +1765,12 @@ var sectorsCapacityCollateralCmd = &cli.Command{
 				return err
 			}
 
-			pci.Expiration = policy.GetMaxSectorExpirationExtension() + h.Height()
+			maxExtension, err := policy.GetMaxSectorExpirationExtension(nv)
+			if err != nil {
+				return xerrors.Errorf("failed to get max extension: %w", err)
+			}
+
+			pci.Expiration = maxExtension + h.Height()
 		}
 
 		pc, err := nApi.StateMinerInitialPledgeCollateral(ctx, maddr, pci, types.EmptyTSK)
diff --git a/cmd/lotus-shed/shedgen/cbor_gen.go b/cmd/lotus-shed/shedgen/cbor_gen.go
index a04d52c8e..f2a79fe7d 100644
--- a/cmd/lotus-shed/shedgen/cbor_gen.go
+++ b/cmd/lotus-shed/shedgen/cbor_gen.go
@@ -38,7 +38,7 @@ func (t *CarbNode) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Sub"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Sub")); err != nil {
+	if _, err := cw.WriteString(string("Sub")); err != nil {
 		return err
 	}
 
@@ -50,9 +50,11 @@ func (t *CarbNode) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.Sub {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.Sub: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 	return nil
 }
@@ -116,12 +118,25 @@ func (t *CarbNode) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				c, err := cbg.ReadCid(cr)
-				if err != nil {
-					return xerrors.Errorf("reading cid field t.Sub failed: %w", err)
+					{
+
+						c, err := cbg.ReadCid(cr)
+						if err != nil {
+							return xerrors.Errorf("failed to read cid field t.Sub[i]: %w", err)
+						}
+
+						t.Sub[i] = c
+
+					}
 				}
-				t.Sub[i] = c
 			}
 
 		default:
diff --git a/cmd/lotus-sim/simulation/stages/precommit_stage.go b/cmd/lotus-sim/simulation/stages/precommit_stage.go
index 5373ebe54..1a89413d7 100644
--- a/cmd/lotus-sim/simulation/stages/precommit_stage.go
+++ b/cmd/lotus-sim/simulation/stages/precommit_stage.go
@@ -176,7 +176,12 @@ func (stage *PreCommitStage) packMiner(
 		return 0, false, err
 	}
 
-	expiration := epoch + policy.GetMaxSectorExpirationExtension()
+	maxExtension, err := policy.GetMaxSectorExpirationExtension(nv)
+	if err != nil {
+		return 0, false, xerrors.Errorf("failed to get max extension: %w", err)
+	}
+
+	expiration := epoch + maxExtension
 	infos := make([]minertypes.PreCommitSectorParams, len(sectorNos))
 	for i, sno := range sectorNos {
 		infos[i] = minertypes.PreCommitSectorParams{
diff --git a/conformance/chaos/cbor_gen.go b/conformance/chaos/cbor_gen.go
index 5da16e16f..d74ae0946 100644
--- a/conformance/chaos/cbor_gen.go
+++ b/conformance/chaos/cbor_gen.go
@@ -44,7 +44,7 @@ func (t *State) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Value))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Value)); err != nil {
+	if _, err := cw.WriteString(string(t.Value)); err != nil {
 		return err
 	}
 
@@ -117,13 +117,32 @@ func (t *State) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v UnmarshallableCBOR
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				b, err := cr.ReadByte()
+				if err != nil {
+					return err
+				}
+				if b != cbg.CborNull[0] {
+					if err := cr.UnreadByte(); err != nil {
+						return err
+					}
+					t.Unmarshallable[i] = new(UnmarshallableCBOR)
+					if err := t.Unmarshallable[i].UnmarshalCBOR(cr); err != nil {
+						return xerrors.Errorf("unmarshaling t.Unmarshallable[i] pointer: %w", err)
+					}
+				}
+
+			}
 		}
-
-		t.Unmarshallable[i] = &v
 	}
 
 	return nil
@@ -177,9 +196,11 @@ func (t *CallerValidationArgs) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.Types {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.Types: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 	return nil
 }
@@ -252,13 +273,22 @@ func (t *CallerValidationArgs) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		var v address.Address
-		if err := v.UnmarshalCBOR(cr); err != nil {
-			return err
+			{
+
+				if err := t.Addrs[i].UnmarshalCBOR(cr); err != nil {
+					return xerrors.Errorf("unmarshaling t.Addrs[i]: %w", err)
+				}
+
+			}
 		}
-
-		t.Addrs[i] = v
 	}
 
 	// t.Types ([]cid.Cid) (slice)
@@ -281,12 +311,25 @@ func (t *CallerValidationArgs) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.Types failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.Types[i]: %w", err)
+				}
+
+				t.Types[i] = c
+
+			}
 		}
-		t.Types[i] = c
 	}
 
 	return nil
@@ -746,7 +789,7 @@ func (t *MutateStateArgs) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Value))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Value)); err != nil {
+	if _, err := cw.WriteString(string(t.Value)); err != nil {
 		return err
 	}
 
@@ -857,7 +900,7 @@ func (t *AbortWithArgs) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Message))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Message)); err != nil {
+	if _, err := cw.WriteString(string(t.Message)); err != nil {
 		return err
 	}
 
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 310f0ccd4..b53241344 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 310f0ccd42760f8db567d2fa10959e3ef8b6186f
+Subproject commit b53241344bcba6ad12e91a00aa0e61e20e85ef0a
diff --git a/go.mod b/go.mod
index 4eb2922ef..f30d97d08 100644
--- a/go.mod
+++ b/go.mod
@@ -45,7 +45,7 @@ require (
 	github.com/filecoin-project/go-jsonrpc v0.3.1
 	github.com/filecoin-project/go-padreader v0.0.1
 	github.com/filecoin-project/go-paramfetch v0.0.4
-	github.com/filecoin-project/go-state-types v0.12.1
+	github.com/filecoin-project/go-state-types v0.12.3
 	github.com/filecoin-project/go-statemachine v1.0.3
 	github.com/filecoin-project/go-statestore v0.2.0
 	github.com/filecoin-project/go-storedcounter v0.1.0
@@ -135,7 +135,7 @@ require (
 	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7
 	github.com/urfave/cli/v2 v2.25.5
 	github.com/whyrusleeping/bencher v0.0.0-20190829221104-bb6607aa8bba
-	github.com/whyrusleeping/cbor-gen v0.0.0-20230126041949-52956bd4c9aa
+	github.com/whyrusleeping/cbor-gen v0.0.0-20230923211252-36a87e1ba72f
 	github.com/whyrusleeping/ledger-filecoin-go v0.9.1-0.20201010031517-c3dcc1bddce4
 	github.com/whyrusleeping/multiaddr-filter v0.0.0-20160516205228-e903e4adabd7
 	github.com/xeipuuv/gojsonschema v1.2.0
diff --git a/go.sum b/go.sum
index 07e1d096f..4dedcce3d 100644
--- a/go.sum
+++ b/go.sum
@@ -338,8 +338,8 @@ github.com/filecoin-project/go-state-types v0.1.0/go.mod h1:ezYnPf0bNkTsDibL/psS
 github.com/filecoin-project/go-state-types v0.1.6/go.mod h1:UwGVoMsULoCK+bWjEdd/xLCvLAQFBC7EDT477SKml+Q=
 github.com/filecoin-project/go-state-types v0.1.10/go.mod h1:UwGVoMsULoCK+bWjEdd/xLCvLAQFBC7EDT477SKml+Q=
 github.com/filecoin-project/go-state-types v0.11.2-0.20230712101859-8f37624fa540/go.mod h1:SyNPwTsU7I22gL2r0OAPcImvLoTVfgRwdK/Y5rR1zz8=
-github.com/filecoin-project/go-state-types v0.12.1 h1:/1ip/jXIP4QzWd3hlaQ7RGp1DHKKYG3+NOhd/r08UJY=
-github.com/filecoin-project/go-state-types v0.12.1/go.mod h1:KOBGyvCalT8uHBS7KSKOVbjsilD90bBZHgLAqrzz6gU=
+github.com/filecoin-project/go-state-types v0.12.3 h1:tPljjwrmLUT+b/H0R0yWZQVjVEso7ld9JBh4mpF6c8c=
+github.com/filecoin-project/go-state-types v0.12.3/go.mod h1:iJTqGdWDvzXhuVf64Lw0hzt4TIoitMo0VgHdxdjNDZI=
 github.com/filecoin-project/go-statemachine v0.0.0-20200925024713-05bd7c71fbfe/go.mod h1:FGwQgZAt2Gh5mjlwJUlVB62JeYdo+if0xWxSEfBD9ig=
 github.com/filecoin-project/go-statemachine v1.0.3 h1:N07o6alys+V1tNoSTi4WuuoeNC4erS/6jE74+NsgQuk=
 github.com/filecoin-project/go-statemachine v1.0.3/go.mod h1:jZdXXiHa61n4NmgWFG4w8tnqgvZVHYbJ3yW7+y8bF54=
@@ -1659,8 +1659,8 @@ github.com/whyrusleeping/cbor-gen v0.0.0-20200826160007-0b9f6c5fb163/go.mod h1:f
 github.com/whyrusleeping/cbor-gen v0.0.0-20210118024343-169e9d70c0c2/go.mod h1:fgkXqYy7bV2cFeIEOkVTZS/WjXARfBqSH6Q2qHL33hQ=
 github.com/whyrusleeping/cbor-gen v0.0.0-20210303213153-67a261a1d291/go.mod h1:fgkXqYy7bV2cFeIEOkVTZS/WjXARfBqSH6Q2qHL33hQ=
 github.com/whyrusleeping/cbor-gen v0.0.0-20220323183124-98fa8256a799/go.mod h1:fgkXqYy7bV2cFeIEOkVTZS/WjXARfBqSH6Q2qHL33hQ=
-github.com/whyrusleeping/cbor-gen v0.0.0-20230126041949-52956bd4c9aa h1:EyA027ZAkuaCLoxVX4r1TZMPy1d31fM6hbfQ4OU4I5o=
-github.com/whyrusleeping/cbor-gen v0.0.0-20230126041949-52956bd4c9aa/go.mod h1:fgkXqYy7bV2cFeIEOkVTZS/WjXARfBqSH6Q2qHL33hQ=
+github.com/whyrusleeping/cbor-gen v0.0.0-20230923211252-36a87e1ba72f h1:SBuSxXJL0/ZJMtTxbXZgHZkThl9dNrzyaNhlyaqscRo=
+github.com/whyrusleeping/cbor-gen v0.0.0-20230923211252-36a87e1ba72f/go.mod h1:fgkXqYy7bV2cFeIEOkVTZS/WjXARfBqSH6Q2qHL33hQ=
 github.com/whyrusleeping/chunker v0.0.0-20181014151217-fe64bd25879f h1:jQa4QT2UP9WYv2nzyawpKMOCl+Z/jW7djv2/J50lj9E=
 github.com/whyrusleeping/chunker v0.0.0-20181014151217-fe64bd25879f/go.mod h1:p9UJB6dDgdPgMJZs7UjUOdulKyRr9fqkS+6JKAInPy8=
 github.com/whyrusleeping/go-keyspace v0.0.0-20160322163242-5b898ac5add1 h1:EKhdznlJHPMoKr0XTrX+IlJs1LH3lyx2nfr1dOlZ79k=
diff --git a/itests/fevm_test.go b/itests/fevm_test.go
index 4a9726abd..cb69c036c 100644
--- a/itests/fevm_test.go
+++ b/itests/fevm_test.go
@@ -620,8 +620,8 @@ func TestFEVMRecursiveActorCall(t *testing.T) {
 	t.Run("n=0,r=252", testN(0, 252, exitcode.Ok))
 	t.Run("n=251,r=164", testN(251, 164, exitcode.Ok))
 
-	t.Run("n=0,r=253-fails", testN(0, 254, exitcode.ExitCode(33))) // 33 means transaction reverted
-	t.Run("n=251,r=167-fails", testN(251, 165, exitcode.ExitCode(33)))
+	t.Run("n=0,r=255-fails", testN(0, 255, exitcode.ExitCode(33))) // 33 means transaction reverted
+	t.Run("n=251,r=167-fails", testN(251, 167, exitcode.ExitCode(33)))
 }
 
 // TestFEVMRecursiveActorCallEstimate
diff --git a/node/config/def.go b/node/config/def.go
index 4be902455..dd36803a0 100644
--- a/node/config/def.go
+++ b/node/config/def.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
+	"github.com/filecoin-project/go-state-types/network"
 	miner5 "github.com/filecoin-project/specs-actors/v5/actors/builtin/miner"
 
 	"github.com/filecoin-project/lotus/chain/actors/builtin"
@@ -122,6 +123,8 @@ func DefaultFullNode() *FullNode {
 }
 
 func DefaultStorageMiner() *StorageMiner {
+	// TODO: Should we increase this to nv21, which would push it to 3.5 years?
+	maxSectorExtentsion, _ := policy.GetMaxSectorExpirationExtension(network.Version20)
 	cfg := &StorageMiner{
 		Common: defCommon(),
 
@@ -143,7 +146,7 @@ func DefaultStorageMiner() *StorageMiner {
 			// XXX snap deals wait deals slack if first
 			PreCommitBatchSlack: Duration(3 * time.Hour), // time buffer for forceful batch submission before sectors/deals in batch would start expiring, higher value will lower the chances for message fail due to expiration
 
-			CommittedCapacitySectorLifetime: Duration(builtin.EpochDurationSeconds * uint64(policy.GetMaxSectorExpirationExtension()) * uint64(time.Second)),
+			CommittedCapacitySectorLifetime: Duration(builtin.EpochDurationSeconds * uint64(maxSectorExtentsion) * uint64(time.Second)),
 
 			AggregateCommits: true,
 			MinCommitBatch:   miner5.MinAggregatedSectors, // per FIP13, we must have at least four proofs to aggregate, where 4 is the cross over point where aggregation wins out on single provecommit gas costs
diff --git a/node/hello/cbor_gen.go b/node/hello/cbor_gen.go
index 5b0697f55..78e950f6f 100644
--- a/node/hello/cbor_gen.go
+++ b/node/hello/cbor_gen.go
@@ -43,9 +43,11 @@ func (t *HelloMessage) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 	for _, v := range t.HeaviestTipSet {
-		if err := cbg.WriteCid(w, v); err != nil {
-			return xerrors.Errorf("failed writing cid field t.HeaviestTipSet: %w", err)
+
+		if err := cbg.WriteCid(cw, v); err != nil {
+			return xerrors.Errorf("failed to write cid field v: %w", err)
 		}
+
 	}
 
 	// t.HeaviestTipSetHeight (abi.ChainEpoch) (int64)
@@ -116,12 +118,25 @@ func (t *HelloMessage) UnmarshalCBOR(r io.Reader) (err error) {
 	}
 
 	for i := 0; i < int(extra); i++ {
+		{
+			var maj byte
+			var extra uint64
+			var err error
+			_ = maj
+			_ = extra
+			_ = err
 
-		c, err := cbg.ReadCid(cr)
-		if err != nil {
-			return xerrors.Errorf("reading cid field t.HeaviestTipSet failed: %w", err)
+			{
+
+				c, err := cbg.ReadCid(cr)
+				if err != nil {
+					return xerrors.Errorf("failed to read cid field t.HeaviestTipSet[i]: %w", err)
+				}
+
+				t.HeaviestTipSet[i] = c
+
+			}
 		}
-		t.HeaviestTipSet[i] = c
 	}
 
 	// t.HeaviestTipSetHeight (abi.ChainEpoch) (int64)
diff --git a/node/impl/full/state.go b/node/impl/full/state.go
index 357584ea0..5e137bfc4 100644
--- a/node/impl/full/state.go
+++ b/node/impl/full/state.go
@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"math"
 	"strconv"
 
 	"github.com/ipfs/go-cid"
@@ -19,6 +20,7 @@ import (
 	"github.com/filecoin-project/go-state-types/abi"
 	actorstypes "github.com/filecoin-project/go-state-types/actors"
 	"github.com/filecoin-project/go-state-types/big"
+	market12 "github.com/filecoin-project/go-state-types/builtin/v12/market"
 	"github.com/filecoin-project/go-state-types/cbor"
 	"github.com/filecoin-project/go-state-types/crypto"
 	"github.com/filecoin-project/go-state-types/dline"
@@ -912,27 +914,25 @@ func (a *StateAPI) StateComputeDataCID(ctx context.Context, maddr address.Addres
 		return cid.Cid{}, err
 	}
 
-	var ccparams []byte
 	if nv < network.Version13 {
-		ccparams, err = actors.SerializeParams(&market2.ComputeDataCommitmentParams{
-			DealIDs:    deals,
-			SectorType: sectorType,
-		})
+		return a.stateComputeDataCIDv1(ctx, maddr, sectorType, deals, tsk)
+	} else if nv < network.Version21 {
+		return a.stateComputeDataCIDv2(ctx, maddr, sectorType, deals, tsk)
 	} else {
-		ccparams, err = actors.SerializeParams(&market5.ComputeDataCommitmentParams{
-			Inputs: []*market5.SectorDataSpec{
-				{
-					DealIDs:    deals,
-					SectorType: sectorType,
-				},
-			},
-		})
+		return a.stateComputeDataCIDv3(ctx, maddr, sectorType, deals, tsk)
 	}
+}
+
+func (a *StateAPI) stateComputeDataCIDv1(ctx context.Context, maddr address.Address, sectorType abi.RegisteredSealProof, deals []abi.DealID, tsk types.TipSetKey) (cid.Cid, error) {
+	var err error
+	ccparams, err := actors.SerializeParams(&market2.ComputeDataCommitmentParams{
+		DealIDs:    deals,
+		SectorType: sectorType,
+	})
 
 	if err != nil {
 		return cid.Undef, xerrors.Errorf("computing params for ComputeDataCommitment: %w", err)
 	}
-
 	ccmt := &types.Message{
 		To:     market.Address,
 		From:   maddr,
@@ -948,13 +948,41 @@ func (a *StateAPI) StateComputeDataCID(ctx context.Context, maddr address.Addres
 		return cid.Undef, xerrors.Errorf("receipt for ComputeDataCommitment had exit code %d", r.MsgRct.ExitCode)
 	}
 
-	if nv < network.Version13 {
-		var c cbg.CborCid
-		if err := c.UnmarshalCBOR(bytes.NewReader(r.MsgRct.Return)); err != nil {
-			return cid.Undef, xerrors.Errorf("failed to unmarshal CBOR to CborCid: %w", err)
-		}
+	var c cbg.CborCid
+	if err := c.UnmarshalCBOR(bytes.NewReader(r.MsgRct.Return)); err != nil {
+		return cid.Undef, xerrors.Errorf("failed to unmarshal CBOR to CborCid: %w", err)
+	}
 
-		return cid.Cid(c), nil
+	return cid.Cid(c), nil
+}
+
+func (a *StateAPI) stateComputeDataCIDv2(ctx context.Context, maddr address.Address, sectorType abi.RegisteredSealProof, deals []abi.DealID, tsk types.TipSetKey) (cid.Cid, error) {
+	var err error
+	ccparams, err := actors.SerializeParams(&market5.ComputeDataCommitmentParams{
+		Inputs: []*market5.SectorDataSpec{
+			{
+				DealIDs:    deals,
+				SectorType: sectorType,
+			},
+		},
+	})
+
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("computing params for ComputeDataCommitment: %w", err)
+	}
+	ccmt := &types.Message{
+		To:     market.Address,
+		From:   maddr,
+		Value:  types.NewInt(0),
+		Method: market.Methods.ComputeDataCommitment,
+		Params: ccparams,
+	}
+	r, err := a.StateCall(ctx, ccmt, tsk)
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("calling ComputeDataCommitment: %w", err)
+	}
+	if r.MsgRct.ExitCode != 0 {
+		return cid.Undef, xerrors.Errorf("receipt for ComputeDataCommitment had exit code %d", r.MsgRct.ExitCode)
 	}
 
 	var cr market5.ComputeDataCommitmentReturn
@@ -969,6 +997,52 @@ func (a *StateAPI) StateComputeDataCID(ctx context.Context, maddr address.Addres
 	return cid.Cid(cr.CommDs[0]), nil
 }
 
+func (a *StateAPI) stateComputeDataCIDv3(ctx context.Context, maddr address.Address, sectorType abi.RegisteredSealProof, deals []abi.DealID, tsk types.TipSetKey) (cid.Cid, error) {
+	if len(deals) == 0 {
+		return cid.Undef, nil
+	}
+
+	var err error
+	ccparams, err := actors.SerializeParams(&market12.VerifyDealsForActivationParams{
+		Sectors: []market12.SectorDeals{{
+			SectorType:   sectorType,
+			SectorExpiry: math.MaxInt64,
+			DealIDs:      deals,
+		}},
+	})
+
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("computing params for VerifyDealsForActivation: %w", err)
+	}
+	ccmt := &types.Message{
+		To:     market.Address,
+		From:   maddr,
+		Value:  types.NewInt(0),
+		Method: market.Methods.VerifyDealsForActivation,
+		Params: ccparams,
+	}
+	r, err := a.StateCall(ctx, ccmt, tsk)
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("calling VerifyDealsForActivation: %w", err)
+	}
+	if r.MsgRct.ExitCode != 0 {
+		return cid.Undef, xerrors.Errorf("receipt for VerifyDealsForActivation had exit code %d", r.MsgRct.ExitCode)
+	}
+
+	var cr market12.VerifyDealsForActivationReturn
+	if err := cr.UnmarshalCBOR(bytes.NewReader(r.MsgRct.Return)); err != nil {
+		return cid.Undef, xerrors.Errorf("failed to unmarshal CBOR to VerifyDealsForActivationReturn: %w", err)
+	}
+	if len(cr.UnsealedCIDs) != 1 {
+		return cid.Undef, xerrors.Errorf("Sectors output must have 1 entry")
+	}
+	ucid := cr.UnsealedCIDs[0]
+	if ucid == nil {
+		return cid.Undef, xerrors.Errorf("computed data CID is nil")
+	}
+	return *ucid, nil
+}
+
 func (a *StateAPI) StateChangedActors(ctx context.Context, old cid.Cid, new cid.Cid) (map[string]types.Actor, error) {
 	store := a.Chain.ActorStore(ctx)
 
diff --git a/paychmgr/cbor_gen.go b/paychmgr/cbor_gen.go
index b3880aa10..f97c176a3 100644
--- a/paychmgr/cbor_gen.go
+++ b/paychmgr/cbor_gen.go
@@ -41,7 +41,7 @@ func (t *VoucherInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Proof"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Proof")); err != nil {
+	if _, err := cw.WriteString(string("Proof")); err != nil {
 		return err
 	}
 
@@ -65,7 +65,7 @@ func (t *VoucherInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Voucher"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Voucher")); err != nil {
+	if _, err := cw.WriteString(string("Voucher")); err != nil {
 		return err
 	}
 
@@ -81,7 +81,7 @@ func (t *VoucherInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Submitted"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Submitted")); err != nil {
+	if _, err := cw.WriteString(string("Submitted")); err != nil {
 		return err
 	}
 
@@ -218,7 +218,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Amount"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Amount")); err != nil {
+	if _, err := cw.WriteString(string("Amount")); err != nil {
 		return err
 	}
 
@@ -234,7 +234,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Target"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Target")); err != nil {
+	if _, err := cw.WriteString(string("Target")); err != nil {
 		return err
 	}
 
@@ -250,7 +250,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Channel"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Channel")); err != nil {
+	if _, err := cw.WriteString(string("Channel")); err != nil {
 		return err
 	}
 
@@ -266,7 +266,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Control"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Control")); err != nil {
+	if _, err := cw.WriteString(string("Control")); err != nil {
 		return err
 	}
 
@@ -282,7 +282,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("NextLane"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("NextLane")); err != nil {
+	if _, err := cw.WriteString(string("NextLane")); err != nil {
 		return err
 	}
 
@@ -298,7 +298,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Settling"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Settling")); err != nil {
+	if _, err := cw.WriteString(string("Settling")); err != nil {
 		return err
 	}
 
@@ -314,7 +314,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Vouchers"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Vouchers")); err != nil {
+	if _, err := cw.WriteString(string("Vouchers")); err != nil {
 		return err
 	}
 
@@ -339,7 +339,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ChannelID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ChannelID")); err != nil {
+	if _, err := cw.WriteString(string("ChannelID")); err != nil {
 		return err
 	}
 
@@ -350,7 +350,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.ChannelID))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.ChannelID)); err != nil {
+	if _, err := cw.WriteString(string(t.ChannelID)); err != nil {
 		return err
 	}
 
@@ -362,7 +362,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CreateMsg"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CreateMsg")); err != nil {
+	if _, err := cw.WriteString(string("CreateMsg")); err != nil {
 		return err
 	}
 
@@ -384,7 +384,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Direction"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Direction")); err != nil {
+	if _, err := cw.WriteString(string("Direction")); err != nil {
 		return err
 	}
 
@@ -400,7 +400,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("AddFundsMsg"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("AddFundsMsg")); err != nil {
+	if _, err := cw.WriteString(string("AddFundsMsg")); err != nil {
 		return err
 	}
 
@@ -422,7 +422,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PendingAmount"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PendingAmount")); err != nil {
+	if _, err := cw.WriteString(string("PendingAmount")); err != nil {
 		return err
 	}
 
@@ -438,7 +438,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("AvailableAmount"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("AvailableAmount")); err != nil {
+	if _, err := cw.WriteString(string("AvailableAmount")); err != nil {
 		return err
 	}
 
@@ -454,7 +454,7 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PendingAvailableAmount"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PendingAvailableAmount")); err != nil {
+	if _, err := cw.WriteString(string("PendingAvailableAmount")); err != nil {
 		return err
 	}
 
@@ -606,13 +606,32 @@ func (t *ChannelInfo) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v VoucherInfo
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						b, err := cr.ReadByte()
+						if err != nil {
+							return err
+						}
+						if b != cbg.CborNull[0] {
+							if err := cr.UnreadByte(); err != nil {
+								return err
+							}
+							t.Vouchers[i] = new(VoucherInfo)
+							if err := t.Vouchers[i].UnmarshalCBOR(cr); err != nil {
+								return xerrors.Errorf("unmarshaling t.Vouchers[i] pointer: %w", err)
+							}
+						}
+
+					}
 				}
-
-				t.Vouchers[i] = &v
 			}
 
 			// t.ChannelID (string) (string)
@@ -746,7 +765,7 @@ func (t *MsgInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Err"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Err")); err != nil {
+	if _, err := cw.WriteString(string("Err")); err != nil {
 		return err
 	}
 
@@ -757,7 +776,7 @@ func (t *MsgInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Err))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Err)); err != nil {
+	if _, err := cw.WriteString(string(t.Err)); err != nil {
 		return err
 	}
 
@@ -769,7 +788,7 @@ func (t *MsgInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("MsgCid"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("MsgCid")); err != nil {
+	if _, err := cw.WriteString(string("MsgCid")); err != nil {
 		return err
 	}
 
@@ -785,7 +804,7 @@ func (t *MsgInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Received"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Received")); err != nil {
+	if _, err := cw.WriteString(string("Received")); err != nil {
 		return err
 	}
 
@@ -801,7 +820,7 @@ func (t *MsgInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ChannelID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ChannelID")); err != nil {
+	if _, err := cw.WriteString(string("ChannelID")); err != nil {
 		return err
 	}
 
@@ -812,7 +831,7 @@ func (t *MsgInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.ChannelID))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.ChannelID)); err != nil {
+	if _, err := cw.WriteString(string(t.ChannelID)); err != nil {
 		return err
 	}
 	return nil
diff --git a/storage/pipeline/cbor_gen.go b/storage/pipeline/cbor_gen.go
index d14611c6a..7ece009cc 100644
--- a/storage/pipeline/cbor_gen.go
+++ b/storage/pipeline/cbor_gen.go
@@ -43,7 +43,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Log"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Log")); err != nil {
+	if _, err := cw.WriteString(string("Log")); err != nil {
 		return err
 	}
 
@@ -68,7 +68,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CommD"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CommD")); err != nil {
+	if _, err := cw.WriteString(string("CommD")); err != nil {
 		return err
 	}
 
@@ -90,7 +90,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CommR"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CommR")); err != nil {
+	if _, err := cw.WriteString(string("CommR")); err != nil {
 		return err
 	}
 
@@ -112,7 +112,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Proof"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Proof")); err != nil {
+	if _, err := cw.WriteString(string("Proof")); err != nil {
 		return err
 	}
 
@@ -136,7 +136,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("State"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("State")); err != nil {
+	if _, err := cw.WriteString(string("State")); err != nil {
 		return err
 	}
 
@@ -147,7 +147,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.State))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.State)); err != nil {
+	if _, err := cw.WriteString(string(t.State)); err != nil {
 		return err
 	}
 
@@ -159,7 +159,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Pieces"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Pieces")); err != nil {
+	if _, err := cw.WriteString(string("Pieces")); err != nil {
 		return err
 	}
 
@@ -184,7 +184,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Return"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Return")); err != nil {
+	if _, err := cw.WriteString(string("Return")); err != nil {
 		return err
 	}
 
@@ -195,7 +195,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Return))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Return)); err != nil {
+	if _, err := cw.WriteString(string(t.Return)); err != nil {
 		return err
 	}
 
@@ -207,7 +207,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("LastErr"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("LastErr")); err != nil {
+	if _, err := cw.WriteString(string("LastErr")); err != nil {
 		return err
 	}
 
@@ -218,7 +218,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.LastErr))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.LastErr)); err != nil {
+	if _, err := cw.WriteString(string(t.LastErr)); err != nil {
 		return err
 	}
 
@@ -230,7 +230,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CCPieces"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CCPieces")); err != nil {
+	if _, err := cw.WriteString(string("CCPieces")); err != nil {
 		return err
 	}
 
@@ -255,7 +255,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CCUpdate"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CCUpdate")); err != nil {
+	if _, err := cw.WriteString(string("CCUpdate")); err != nil {
 		return err
 	}
 
@@ -271,7 +271,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("SeedEpoch"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("SeedEpoch")); err != nil {
+	if _, err := cw.WriteString(string("SeedEpoch")); err != nil {
 		return err
 	}
 
@@ -293,7 +293,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("SeedValue"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("SeedValue")); err != nil {
+	if _, err := cw.WriteString(string("SeedValue")); err != nil {
 		return err
 	}
 
@@ -317,7 +317,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("SectorType"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("SectorType")); err != nil {
+	if _, err := cw.WriteString(string("SectorType")); err != nil {
 		return err
 	}
 
@@ -339,7 +339,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("TicketEpoch"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("TicketEpoch")); err != nil {
+	if _, err := cw.WriteString(string("TicketEpoch")); err != nil {
 		return err
 	}
 
@@ -361,7 +361,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("TicketValue"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("TicketValue")); err != nil {
+	if _, err := cw.WriteString(string("TicketValue")); err != nil {
 		return err
 	}
 
@@ -385,7 +385,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CreationTime"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CreationTime")); err != nil {
+	if _, err := cw.WriteString(string("CreationTime")); err != nil {
 		return err
 	}
 
@@ -407,7 +407,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("SectorNumber"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("SectorNumber")); err != nil {
+	if _, err := cw.WriteString(string("SectorNumber")); err != nil {
 		return err
 	}
 
@@ -423,7 +423,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("TerminatedAt"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("TerminatedAt")); err != nil {
+	if _, err := cw.WriteString(string("TerminatedAt")); err != nil {
 		return err
 	}
 
@@ -445,7 +445,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("UpdateSealed"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("UpdateSealed")); err != nil {
+	if _, err := cw.WriteString(string("UpdateSealed")); err != nil {
 		return err
 	}
 
@@ -467,7 +467,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("CommitMessage"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("CommitMessage")); err != nil {
+	if _, err := cw.WriteString(string("CommitMessage")); err != nil {
 		return err
 	}
 
@@ -489,7 +489,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("InvalidProofs"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("InvalidProofs")); err != nil {
+	if _, err := cw.WriteString(string("InvalidProofs")); err != nil {
 		return err
 	}
 
@@ -505,7 +505,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PreCommit1Out"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PreCommit1Out")); err != nil {
+	if _, err := cw.WriteString(string("PreCommit1Out")); err != nil {
 		return err
 	}
 
@@ -529,7 +529,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("FaultReportMsg"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("FaultReportMsg")); err != nil {
+	if _, err := cw.WriteString(string("FaultReportMsg")); err != nil {
 		return err
 	}
 
@@ -551,7 +551,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("UpdateUnsealed"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("UpdateUnsealed")); err != nil {
+	if _, err := cw.WriteString(string("UpdateUnsealed")); err != nil {
 		return err
 	}
 
@@ -573,7 +573,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PreCommit2Fails"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PreCommit2Fails")); err != nil {
+	if _, err := cw.WriteString(string("PreCommit2Fails")); err != nil {
 		return err
 	}
 
@@ -589,7 +589,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PreCommitTipSet"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PreCommitTipSet")); err != nil {
+	if _, err := cw.WriteString(string("PreCommitTipSet")); err != nil {
 		return err
 	}
 
@@ -605,7 +605,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteDataCache"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteDataCache")); err != nil {
+	if _, err := cw.WriteString(string("RemoteDataCache")); err != nil {
 		return err
 	}
 
@@ -621,7 +621,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PreCommitDeposit"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PreCommitDeposit")); err != nil {
+	if _, err := cw.WriteString(string("PreCommitDeposit")); err != nil {
 		return err
 	}
 
@@ -637,7 +637,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("PreCommitMessage"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("PreCommitMessage")); err != nil {
+	if _, err := cw.WriteString(string("PreCommitMessage")); err != nil {
 		return err
 	}
 
@@ -659,7 +659,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteDataSealed"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteDataSealed")); err != nil {
+	if _, err := cw.WriteString(string("RemoteDataSealed")); err != nil {
 		return err
 	}
 
@@ -675,7 +675,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("TerminateMessage"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("TerminateMessage")); err != nil {
+	if _, err := cw.WriteString(string("TerminateMessage")); err != nil {
 		return err
 	}
 
@@ -697,7 +697,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteDataUnsealed"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteDataUnsealed")); err != nil {
+	if _, err := cw.WriteString(string("RemoteDataUnsealed")); err != nil {
 		return err
 	}
 
@@ -713,7 +713,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ReplicaUpdateProof"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ReplicaUpdateProof")); err != nil {
+	if _, err := cw.WriteString(string("ReplicaUpdateProof")); err != nil {
 		return err
 	}
 
@@ -737,7 +737,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteDataFinalized"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteDataFinalized")); err != nil {
+	if _, err := cw.WriteString(string("RemoteDataFinalized")); err != nil {
 		return err
 	}
 
@@ -753,7 +753,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ReplicaUpdateMessage"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ReplicaUpdateMessage")); err != nil {
+	if _, err := cw.WriteString(string("ReplicaUpdateMessage")); err != nil {
 		return err
 	}
 
@@ -775,7 +775,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteCommit1Endpoint"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteCommit1Endpoint")); err != nil {
+	if _, err := cw.WriteString(string("RemoteCommit1Endpoint")); err != nil {
 		return err
 	}
 
@@ -786,7 +786,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.RemoteCommit1Endpoint))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.RemoteCommit1Endpoint)); err != nil {
+	if _, err := cw.WriteString(string(t.RemoteCommit1Endpoint)); err != nil {
 		return err
 	}
 
@@ -798,7 +798,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteCommit2Endpoint"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteCommit2Endpoint")); err != nil {
+	if _, err := cw.WriteString(string("RemoteCommit2Endpoint")); err != nil {
 		return err
 	}
 
@@ -809,7 +809,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.RemoteCommit2Endpoint))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.RemoteCommit2Endpoint)); err != nil {
+	if _, err := cw.WriteString(string(t.RemoteCommit2Endpoint)); err != nil {
 		return err
 	}
 
@@ -821,7 +821,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RemoteSealingDoneEndpoint"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RemoteSealingDoneEndpoint")); err != nil {
+	if _, err := cw.WriteString(string("RemoteSealingDoneEndpoint")); err != nil {
 		return err
 	}
 
@@ -832,7 +832,7 @@ func (t *SectorInfo) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.RemoteSealingDoneEndpoint))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.RemoteSealingDoneEndpoint)); err != nil {
+	if _, err := cw.WriteString(string(t.RemoteSealingDoneEndpoint)); err != nil {
 		return err
 	}
 	return nil
@@ -897,13 +897,22 @@ func (t *SectorInfo) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v Log
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						if err := t.Log[i].UnmarshalCBOR(cr); err != nil {
+							return xerrors.Errorf("unmarshaling t.Log[i]: %w", err)
+						}
+
+					}
 				}
-
-				t.Log[i] = v
 			}
 
 			// t.CommD (cid.Cid) (struct)
@@ -1006,13 +1015,22 @@ func (t *SectorInfo) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v api.SectorPiece
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						if err := t.Pieces[i].UnmarshalCBOR(cr); err != nil {
+							return xerrors.Errorf("unmarshaling t.Pieces[i]: %w", err)
+						}
+
+					}
 				}
-
-				t.Pieces[i] = v
 			}
 
 			// t.Return (sealing.ReturnState) (string)
@@ -1058,13 +1076,22 @@ func (t *SectorInfo) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v api.SectorPiece
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						if err := t.CCPieces[i].UnmarshalCBOR(cr); err != nil {
+							return xerrors.Errorf("unmarshaling t.CCPieces[i]: %w", err)
+						}
+
+					}
 				}
-
-				t.CCPieces[i] = v
 			}
 
 			// t.CCUpdate (bool) (bool)
@@ -1669,7 +1696,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Kind"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Kind")); err != nil {
+	if _, err := cw.WriteString(string("Kind")); err != nil {
 		return err
 	}
 
@@ -1680,7 +1707,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Kind))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Kind)); err != nil {
+	if _, err := cw.WriteString(string(t.Kind)); err != nil {
 		return err
 	}
 
@@ -1692,7 +1719,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Trace"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Trace")); err != nil {
+	if _, err := cw.WriteString(string("Trace")); err != nil {
 		return err
 	}
 
@@ -1703,7 +1730,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Trace))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Trace)); err != nil {
+	if _, err := cw.WriteString(string(t.Trace)); err != nil {
 		return err
 	}
 
@@ -1715,7 +1742,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Message"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Message")); err != nil {
+	if _, err := cw.WriteString(string("Message")); err != nil {
 		return err
 	}
 
@@ -1726,7 +1753,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Message))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Message)); err != nil {
+	if _, err := cw.WriteString(string(t.Message)); err != nil {
 		return err
 	}
 
@@ -1738,7 +1765,7 @@ func (t *Log) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Timestamp"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Timestamp")); err != nil {
+	if _, err := cw.WriteString(string("Timestamp")); err != nil {
 		return err
 	}
 
diff --git a/storage/pipeline/checks.go b/storage/pipeline/checks.go
index b243804cc..ecd160231 100644
--- a/storage/pipeline/checks.go
+++ b/storage/pipeline/checks.go
@@ -106,13 +106,15 @@ func checkPrecommit(ctx context.Context, maddr address.Address, si SectorInfo, t
 		return err
 	}
 
-	commD, err := api.StateComputeDataCID(ctx, maddr, si.SectorType, si.dealIDs(), tsk)
-	if err != nil {
-		return &ErrApi{xerrors.Errorf("calling StateComputeDataCommitment: %w", err)}
-	}
+	if si.hasDeals() {
+		commD, err := api.StateComputeDataCID(ctx, maddr, si.SectorType, si.dealIDs(), tsk)
+		if err != nil {
+			return &ErrApi{xerrors.Errorf("calling StateComputeDataCommitment: %w", err)}
+		}
 
-	if si.CommD == nil || !commD.Equals(*si.CommD) {
-		return &ErrBadCommD{xerrors.Errorf("on chain CommD differs from sector: %s != %s", commD, si.CommD)}
+		if si.CommD == nil || !commD.Equals(*si.CommD) {
+			return &ErrBadCommD{xerrors.Errorf("on chain CommD differs from sector: %s != %s", commD, si.CommD)}
+		}
 	}
 
 	pci, err := api.StateSectorPreCommitInfo(ctx, maddr, si.SectorNumber, tsk)
diff --git a/storage/pipeline/precommit_policy.go b/storage/pipeline/precommit_policy.go
index e1b6e6be7..6e234f930 100644
--- a/storage/pipeline/precommit_policy.go
+++ b/storage/pipeline/precommit_policy.go
@@ -85,10 +85,15 @@ func (p *BasicPreCommitPolicy) Expiration(ctx context.Context, ps ...api.SectorP
 	}
 
 	if end == nil {
-		// no deal pieces, get expiration for committed capacity sector
-		expirationDuration, err := p.getCCSectorLifetime()
+		nv, err := p.api.StateNetworkVersion(ctx, types.EmptyTSK)
 		if err != nil {
-			return 0, err
+			return 0, xerrors.Errorf("failed to get network version: %w", err)
+		}
+
+		// no deal pieces, get expiration for committed capacity sector
+		expirationDuration, err := p.getCCSectorLifetime(nv)
+		if err != nil {
+			return 0, xerrors.Errorf("failed to get cc sector lifetime: %w", err)
 		}
 
 		tmp := ts.Height() + expirationDuration
@@ -105,25 +110,30 @@ func (p *BasicPreCommitPolicy) Expiration(ctx context.Context, ps ...api.SectorP
 	return *end, nil
 }
 
-func (p *BasicPreCommitPolicy) getCCSectorLifetime() (abi.ChainEpoch, error) {
+func (p *BasicPreCommitPolicy) getCCSectorLifetime(nv network.Version) (abi.ChainEpoch, error) {
 	c, err := p.getSealingConfig()
 	if err != nil {
 		return 0, xerrors.Errorf("sealing config load error: %w", err)
 	}
 
+	maxCommitment, err := policy.GetMaxSectorExpirationExtension(nv)
+	if err != nil {
+		return 0, xerrors.Errorf("failed to get max extension: %w", err)
+	}
+
 	var ccLifetimeEpochs = abi.ChainEpoch(uint64(c.CommittedCapacitySectorLifetime.Seconds()) / builtin.EpochDurationSeconds)
 	// if zero value in config, assume default sector extension
 	if ccLifetimeEpochs == 0 {
-		ccLifetimeEpochs = policy.GetMaxSectorExpirationExtension()
+		ccLifetimeEpochs = maxCommitment
 	}
 
 	if minExpiration := abi.ChainEpoch(miner.MinSectorExpiration); ccLifetimeEpochs < minExpiration {
 		log.Warnf("value for CommittedCapacitySectorLiftime is too short, using default minimum (%d epochs)", minExpiration)
 		return minExpiration, nil
 	}
-	if maxExpiration := policy.GetMaxSectorExpirationExtension(); ccLifetimeEpochs > maxExpiration {
-		log.Warnf("value for CommittedCapacitySectorLiftime is too long, using default maximum (%d epochs)", maxExpiration)
-		return maxExpiration, nil
+	if ccLifetimeEpochs > maxCommitment {
+		log.Warnf("value for CommittedCapacitySectorLiftime is too long, using default maximum (%d epochs)", maxCommitment)
+		return maxCommitment, nil
 	}
 
 	return ccLifetimeEpochs - p.provingBuffer, nil
diff --git a/storage/pipeline/precommit_policy_test.go b/storage/pipeline/precommit_policy_test.go
index 9f23e58d6..7865560de 100644
--- a/storage/pipeline/precommit_policy_test.go
+++ b/storage/pipeline/precommit_policy_test.go
@@ -68,7 +68,9 @@ func TestBasicPolicyEmptySector(t *testing.T) {
 	require.NoError(t, err)
 
 	// as set when there are no deal pieces
-	expected := h + policy.GetMaxSectorExpirationExtension() - pBuffer
+	maxExtension, err := policy.GetMaxSectorExpirationExtension(build.TestNetworkVersion)
+	assert.NoError(t, err)
+	expected := h + maxExtension - pBuffer
 	assert.Equal(t, int(expected), int(exp))
 }
 
@@ -132,7 +134,7 @@ func TestBasicPolicyMostConstrictiveSchedule(t *testing.T) {
 
 func TestBasicPolicyIgnoresExistingScheduleIfExpired(t *testing.T) {
 	cfg := fakeConfigGetter(nil)
-	policy := pipeline.NewBasicPreCommitPolicy(&fakeChain{
+	pcp := pipeline.NewBasicPreCommitPolicy(&fakeChain{
 		h: abi.ChainEpoch(55),
 	}, cfg, 0)
 
@@ -152,11 +154,14 @@ func TestBasicPolicyIgnoresExistingScheduleIfExpired(t *testing.T) {
 		},
 	}
 
-	exp, err := policy.Expiration(context.Background(), pieces...)
+	exp, err := pcp.Expiration(context.Background(), pieces...)
+	require.NoError(t, err)
+
+	maxLifetime, err := policy.GetMaxSectorExpirationExtension(build.TestNetworkVersion)
 	require.NoError(t, err)
 
 	// Treated as a CC sector, so expiration becomes currEpoch + maxLifetime = 55 + 1555200
-	assert.Equal(t, 1555255, int(exp))
+	assert.Equal(t, 55+maxLifetime, exp)
 }
 
 func TestMissingDealIsIgnored(t *testing.T) {
diff --git a/storage/pipeline/states_sealing.go b/storage/pipeline/states_sealing.go
index 8221b3968..3210109cc 100644
--- a/storage/pipeline/states_sealing.go
+++ b/storage/pipeline/states_sealing.go
@@ -353,7 +353,12 @@ func (m *Sealing) preCommitInfo(ctx statemachine.Context, sector SectorInfo) (*m
 	}
 
 	// Assume: both precommit msg & commit msg land on chain as early as possible
-	maxExpiration := ts.Height() + policy.GetPreCommitChallengeDelay() + policy.GetMaxSectorExpirationExtension()
+	maxExtension, err := policy.GetMaxSectorExpirationExtension(nv)
+	if err != nil {
+		return nil, big.Zero(), types.EmptyTSK, ctx.Send(SectorSealPreCommit1Failed{xerrors.Errorf("failed to get max extension: %w", err)})
+	}
+
+	maxExpiration := ts.Height() + policy.GetPreCommitChallengeDelay() + maxExtension
 	if expiration > maxExpiration {
 		expiration = maxExpiration
 	}
diff --git a/storage/sealer/cbor_gen.go b/storage/sealer/cbor_gen.go
index 4fa7fd980..22da1b520 100644
--- a/storage/sealer/cbor_gen.go
+++ b/storage/sealer/cbor_gen.go
@@ -40,7 +40,7 @@ func (t *Call) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ID")); err != nil {
+	if _, err := cw.WriteString(string("ID")); err != nil {
 		return err
 	}
 
@@ -56,7 +56,7 @@ func (t *Call) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("State"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("State")); err != nil {
+	if _, err := cw.WriteString(string("State")); err != nil {
 		return err
 	}
 
@@ -72,7 +72,7 @@ func (t *Call) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Result"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Result")); err != nil {
+	if _, err := cw.WriteString(string("Result")); err != nil {
 		return err
 	}
 
@@ -88,7 +88,7 @@ func (t *Call) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("RetType"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("RetType")); err != nil {
+	if _, err := cw.WriteString(string("RetType")); err != nil {
 		return err
 	}
 
@@ -99,7 +99,7 @@ func (t *Call) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.RetType))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.RetType)); err != nil {
+	if _, err := cw.WriteString(string(t.RetType)); err != nil {
 		return err
 	}
 	return nil
@@ -228,7 +228,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ID")); err != nil {
+	if _, err := cw.WriteString(string("ID")); err != nil {
 		return err
 	}
 
@@ -244,7 +244,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Status"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Status")); err != nil {
+	if _, err := cw.WriteString(string("Status")); err != nil {
 		return err
 	}
 
@@ -255,7 +255,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Status))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Status)); err != nil {
+	if _, err := cw.WriteString(string(t.Status)); err != nil {
 		return err
 	}
 
@@ -267,7 +267,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("StartTime"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("StartTime")); err != nil {
+	if _, err := cw.WriteString(string("StartTime")); err != nil {
 		return err
 	}
 
@@ -289,7 +289,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("WorkError"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("WorkError")); err != nil {
+	if _, err := cw.WriteString(string("WorkError")); err != nil {
 		return err
 	}
 
@@ -300,7 +300,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.WorkError))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.WorkError)); err != nil {
+	if _, err := cw.WriteString(string(t.WorkError)); err != nil {
 		return err
 	}
 
@@ -312,7 +312,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("WorkerCall"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("WorkerCall")); err != nil {
+	if _, err := cw.WriteString(string("WorkerCall")); err != nil {
 		return err
 	}
 
@@ -328,7 +328,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("WorkerHostname"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("WorkerHostname")); err != nil {
+	if _, err := cw.WriteString(string("WorkerHostname")); err != nil {
 		return err
 	}
 
@@ -339,7 +339,7 @@ func (t *WorkState) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.WorkerHostname))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.WorkerHostname)); err != nil {
+	if _, err := cw.WriteString(string(t.WorkerHostname)); err != nil {
 		return err
 	}
 	return nil
@@ -491,7 +491,7 @@ func (t *WorkID) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Method"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Method")); err != nil {
+	if _, err := cw.WriteString(string("Method")); err != nil {
 		return err
 	}
 
@@ -502,7 +502,7 @@ func (t *WorkID) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Method))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Method)); err != nil {
+	if _, err := cw.WriteString(string(t.Method)); err != nil {
 		return err
 	}
 
@@ -514,7 +514,7 @@ func (t *WorkID) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Params"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Params")); err != nil {
+	if _, err := cw.WriteString(string("Params")); err != nil {
 		return err
 	}
 
@@ -525,7 +525,7 @@ func (t *WorkID) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Params))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Params)); err != nil {
+	if _, err := cw.WriteString(string(t.Params)); err != nil {
 		return err
 	}
 	return nil
diff --git a/storage/sealer/storiface/cbor_gen.go b/storage/sealer/storiface/cbor_gen.go
index 2f82da3e6..0b42136ea 100644
--- a/storage/sealer/storiface/cbor_gen.go
+++ b/storage/sealer/storiface/cbor_gen.go
@@ -38,7 +38,7 @@ func (t *CallID) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("ID"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("ID")); err != nil {
+	if _, err := cw.WriteString(string("ID")); err != nil {
 		return err
 	}
 
@@ -62,7 +62,7 @@ func (t *CallID) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Sector"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Sector")); err != nil {
+	if _, err := cw.WriteString(string("Sector")); err != nil {
 		return err
 	}
 
@@ -173,7 +173,7 @@ func (t *SecDataHttpHeader) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Key"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Key")); err != nil {
+	if _, err := cw.WriteString(string("Key")); err != nil {
 		return err
 	}
 
@@ -184,7 +184,7 @@ func (t *SecDataHttpHeader) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Key))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Key)); err != nil {
+	if _, err := cw.WriteString(string(t.Key)); err != nil {
 		return err
 	}
 
@@ -196,7 +196,7 @@ func (t *SecDataHttpHeader) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Value"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Value")); err != nil {
+	if _, err := cw.WriteString(string("Value")); err != nil {
 		return err
 	}
 
@@ -207,7 +207,7 @@ func (t *SecDataHttpHeader) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.Value))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.Value)); err != nil {
+	if _, err := cw.WriteString(string(t.Value)); err != nil {
 		return err
 	}
 	return nil
@@ -302,7 +302,7 @@ func (t *SectorLocation) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("URL"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("URL")); err != nil {
+	if _, err := cw.WriteString(string("URL")); err != nil {
 		return err
 	}
 
@@ -313,7 +313,7 @@ func (t *SectorLocation) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(t.URL))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string(t.URL)); err != nil {
+	if _, err := cw.WriteString(string(t.URL)); err != nil {
 		return err
 	}
 
@@ -325,7 +325,7 @@ func (t *SectorLocation) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Local"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Local")); err != nil {
+	if _, err := cw.WriteString(string("Local")); err != nil {
 		return err
 	}
 
@@ -341,7 +341,7 @@ func (t *SectorLocation) MarshalCBOR(w io.Writer) error {
 	if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("Headers"))); err != nil {
 		return err
 	}
-	if _, err := io.WriteString(w, string("Headers")); err != nil {
+	if _, err := cw.WriteString(string("Headers")); err != nil {
 		return err
 	}
 
@@ -448,13 +448,22 @@ func (t *SectorLocation) UnmarshalCBOR(r io.Reader) (err error) {
 			}
 
 			for i := 0; i < int(extra); i++ {
+				{
+					var maj byte
+					var extra uint64
+					var err error
+					_ = maj
+					_ = extra
+					_ = err
 
-				var v SecDataHttpHeader
-				if err := v.UnmarshalCBOR(cr); err != nil {
-					return err
+					{
+
+						if err := t.Headers[i].UnmarshalCBOR(cr); err != nil {
+							return xerrors.Errorf("unmarshaling t.Headers[i]: %w", err)
+						}
+
+					}
 				}
-
-				t.Headers[i] = v
 			}
 
 		default: