Fix mint.ts

Author: AgustinBadi

CLAUDE.md

@@ -201,8 +201,8 @@ const scriptHash  = resolvePlutusScriptHash(poolAddress); // also the minting po
 ```
 
 Known derived values (preprod):
-- `poolAddress` → `addr_test1wq8lshhawfkay7fc68078h7hg36mgnqpfnn82a7y4g067cs78y0m9`
-- `scriptHash`  → `0ff85efd726dd27938d1dfe3dfd74475b44c014ce67577c4aa1faf62`
+- `poolAddress` → `addr_test1wqkhsggq87fndzsll52yp6rm9aw6jw9hhpaenjzxag0xazq3wlxky`
+- `scriptHash`  → `2d7821003f93368a1ffd1440e87b2f5da938b7b87b99c846ea1e6e88`
 
 ### Known preprod constants (`contract.ts`)
 

frontend/src/tx/mint.ts

@@ -71,8 +71,8 @@ export async function buildMintTx(
   // ── 1. Fetch UTxOs ────────────────────────────────────────────────────────
 
   // Pool UTxO — the single UTxO locked at the script address.
-  // May not exist on the very first mint; the validator handles that case on-chain.
-  const poolUtxos: UTxO[] = await provider.fetchAddressUTxOs(poolAddress);
+  // May not exist on the very first mint (Blockfrost returns 404 for unused addresses).
+  const poolUtxos: UTxO[] = await provider.fetchAddressUTxOs(poolAddress).catch(() => []);
   const poolUtxo: UTxO | undefined = poolUtxos[0];
 
   // Pyth State NFT UTxO — reference input carrying the oracle state.