"Good Song" is a song by English rock band Blur and is the fourth track on their seventh studio album, Think Tank (2003). In October 2003, the song was released as the third and final single from that
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cad1e56f60a0c44154f2490193ede9d424804bcb332f0a9191dcb915872635. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4079bcd-169d-4cb2-b6ec-b73d7530400d.json and https://artists.proofprofile.net/proofs/artist/a4079bcd-169d-4cb2-b6ec-b73d7530400d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).