Add multisig address derivation example

packages/cli/examples/multisig_address.ts

@@ -0,0 +1,31 @@
+import { MultisigThresholdPubkey, pubkeyToRawAddress } from "@cosmjs/amino";
+import { Bech32 } from "@cosmjs/encoding";
+
+// https://github.com/cosmos/cosmjs/issues/673#issuecomment-779847238
+const multisigPubkey: MultisigThresholdPubkey = {
+  "type": "tendermint/PubKeyMultisigThreshold",
+  "value": {
+    "threshold": "3",
+    "pubkeys": [
+      {
+        "type": "tendermint/PubKeySecp256k1",
+        "value": "A4KZH7VSRwW/6RTExROivRYKsQP63LnGcBlXFo+eKGpQ"
+      },
+      {
+        "type": "tendermint/PubKeySecp256k1",
+        "value": "A8/Cq4VigOnDgl6RSdcx97fjrdCo/qwAX6C34n7ZDZLs"
+      },
+      {
+        "type": "tendermint/PubKeySecp256k1",
+        "value": "ApKgZuwy03xgdRnXqG6yEHATomsWDOPacy7nbpsuUCSS"
+      },
+      {
+        "type": "tendermint/PubKeySecp256k1",
+        "value": "Aptm8E3WSSFS0RTAIUW+bLi/slYnTEE+h4qPTG28CHfq"
+      }
+    ]
+  }
+};
+
+const address = Bech32.encode("cosmos", pubkeyToRawAddress(multisigPubkey));
+console.log(address);

packages/cli/package.json

@@ -39,6 +39,7 @@
     "!**/testdata/"
   ],
   "dependencies": {
+    "@cosmjs/amino": "^0.25.0-alpha.0",
     "@cosmjs/cosmwasm-launchpad": "^0.25.0-alpha.0",
     "@cosmjs/cosmwasm-stargate": "^0.25.0-alpha.0",
     "@cosmjs/crypto": "^0.25.0-alpha.0",

packages/cli/run_examples.sh

@@ -13,6 +13,7 @@ cosmwasm-cli --init examples/generate_address.ts --code "process.exit(0)"
 cosmwasm-cli --init examples/helpers.ts --code "process.exit(0)"
 cosmwasm-cli --init examples/local_faucet.ts --code "process.exit(0)"
 cosmwasm-cli --init examples/mask.ts --code "process.exit(0)"
+cosmwasm-cli --init examples/multisig_address.ts --code "process.exit(0)"
 if [ -n "${SIMAPP_ENABLED:-}" ]; then
   cosmwasm-cli --init examples/stargate.ts --code "process.exit(0)"
 fi