tx inputs directly reference tx ouputs

db/migrations/00043_create_btc_tx_inputs_table.sql

@@ -1,14 +0,0 @@
--- +goose Up
-CREATE TABLE btc.tx_inputs (
-  id               SERIAL PRIMARY KEY,
-	tx_id            INTEGER NOT NULL REFERENCES btc.transaction_cids (id) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-	index            INTEGER NOT NULL,
-	witness          BYTEA[],
-	sig_script       BYTEA NOT NULL,
-	outpoint_tx_hash VARCHAR(66) REFERENCES btc.transaction_cids (tx_hash) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
-	outpoint_index   BIGINT NOT NULL,
-	UNIQUE (tx_id, index)
-);
-
--- +goose Down
-DROP TABLE btc.tx_inputs;

db/migrations/00044_create_btc_tx_inputs_table.sql

@@ -0,0 +1,13 @@
+-- +goose Up
+CREATE TABLE btc.tx_inputs (
+  id             SERIAL PRIMARY KEY,
+	tx_id          INTEGER NOT NULL REFERENCES btc.transaction_cids (id) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+	index          INTEGER NOT NULL,
+	witness        BYTEA[],
+	sig_script     BYTEA NOT NULL,
+	outpoint_id    INTEGER REFERENCES btc.tx_outputs (id) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
+	UNIQUE (tx_id, index)
+);
+
+-- +goose Down
+DROP TABLE btc.tx_inputs;

db/schema.sql

@@ -112,8 +112,7 @@ CREATE TABLE btc.tx_inputs (
     index integer NOT NULL,
     witness bytea[],
     sig_script bytea NOT NULL,
-    outpoint_tx_hash character varying(66),
-    outpoint_index bigint NOT NULL
+    outpoint_id integer
 );
 
 
@@ -1746,11 +1745,11 @@ ALTER TABLE ONLY btc.transaction_cids
 
 
 --
--- Name: tx_inputs tx_inputs_outpoint_tx_hash_fkey; Type: FK CONSTRAINT; Schema: btc; Owner: -
+-- Name: tx_inputs tx_inputs_outpoint_id_fkey; Type: FK CONSTRAINT; Schema: btc; Owner: -
 --
 
 ALTER TABLE ONLY btc.tx_inputs
-    ADD CONSTRAINT tx_inputs_outpoint_tx_hash_fkey FOREIGN KEY (outpoint_tx_hash) REFERENCES btc.transaction_cids(tx_hash) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED;
+    ADD CONSTRAINT tx_inputs_outpoint_id_fkey FOREIGN KEY (outpoint_id) REFERENCES btc.tx_outputs(id) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED;
 
 
 --