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 0xfc17e2dd5a715df31e225d9bde78f8ffd8c681fd1e68bd49d104f14437d8cb34. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a02ea9b-beb7-4ac0-967a-d11273c7447a.json and https://artists.proofprofile.net/proofs/artist/2a02ea9b-beb7-4ac0-967a-d11273c7447a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Phlyin' High (Philadelphia Phillies Championship Song)
'Zat You Santa Claus (a la Louis Armstrong)
Fly, Eagles Fly (Philadelphia Eagles Fight Song)
Dancing On My Own (Philadelphia Phillies Fight Song)