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 0x7f3bc295abb8d3a909565fec968c5eeb28f50c983e5769bd42bf8f9b81f4eb82. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3f4320a-f715-4cfa-b4e4-817686660884.json and https://artists.proofprofile.net/proofs/artist/f3f4320a-f715-4cfa-b4e4-817686660884.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Perfect / Photograph / Shape of You / Thinking out Loud
I Won't Give Up / 93 Million Miles / Lucky / I'm Yours (Cover)
If I Were a Boy / Irreplaceable / Halo / Crazy in Love (Cover)
Bônus: Chasing Cars / Every Breath You Take
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7a2d23172dd82e032e1f3350701c662352b936a2e3c991df210acc032ae40. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:31:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2118238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85212683cf844e7673d64875f94efc0b3b37c8cc5c5a5c71925bc00b3af7acc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2153726.
I'm Not the Only One / Too Good at Goodbyes / Stay with Me / Dancing with a Stranger
Repertórios de Casamento, Vol. 10 (Cover)
Fly Me To The Moon / La Vie En Rose (Cover)