// Canonical Test Vector §2.2 — all 6 implementations must produce:
construct_asset_id(
pubkey = "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
timestamp = 1740355200,
nonce = "0000000000000001"
) → "593f0dfb3da2fb8e8e21059e26f4a1875e9059a6d9d634e3065541e6c193506a"