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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1d7e598eba6edd9b910745b502105a358870d1cdb4c3f019b7b76b70ce382. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2dd7b53-7c72-4c46-bb88-db430c7e22f6.json and https://artists.proofprofile.net/proofs/artist/a2dd7b53-7c72-4c46-bb88-db430c7e22f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2749b39a155810f506ed05405d0e7e0de68be02965bb5ee51aa7212957c0613. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USVE20400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325d3ed7edc6f79a9f39666639faee8142024e20d35677b63c1fdfecd1fcb5e8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USMR50841249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe155852f1c34d9002133691d9e42168f6624b29dab14ea0341c0ba039a661be1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USMR50841252.
Keith "Wonderboy" Johnson Presents The Rising Starts of Quartet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4e7c750c73055b24ad3185195fa0a2de265693a721a45af1281d002bcfaa03. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USVE20400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f021999a0b5544f67d0a909cb8e640b34061cbb8a8e4a7a9fd674b9cf6b6377. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/US4YK1008401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7b630571e5faa0ec7965523143d3ee12dc397580d89db9663edbb41c1e81e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US4YK1008404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed8b119e59f9a789fb635dcb8cc5e9aa1fe870023d08163bf0f65918cd497e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCACS1611090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f12194ce04fb04a88280373b060a7be5d36bdfcc137f4d32a19f0a5b2dec10. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US7SF1756507.
James Fortune & FIYA Story-Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b676441aa4c9a30ec23876f6849fac99af72ff1628250b09a95faf73615769. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US4YK1120107.
That Devil (feat. Keith Wonderboy Johnson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312e37084a099433beb9f907cb9044c30ca79b0032b9918e9d2102cbfb1a63e1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAAT1074637.