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 0xf28bce195d247a9e18aacdb7437011bfaf8619d37485992e364e3925a26d8652. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/628fa243-3ec1-4378-bbe9-72666a1ec972.json and https://artists.proofprofile.net/proofs/artist/628fa243-3ec1-4378-bbe9-72666a1ec972.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623af165e727a12b5b991dcfb322ecabb153928458fcb051158f5bb98538dae0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKO11880924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a42525d63ad180c6699bc28009aa5b70c0bf1aa7ea36700e3d662e7931a3326. 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/USKO11880925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c59eb7847b31732be892a0a62947d85e3364cc270e1e37758b6040c5eb76e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USKO11880927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d594b9c5f271b6c89efe0d7223c8420bb92da46f2e0489629c3c684d65b28f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USKO11880928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81fdf1989358d7df4a2430b8156a85f0fad02bdeb9a5d5b9c22ba1986132a23. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USKO11880929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e815ecca631aa9a06f5f1e2139b05a5c7523663c92a1e706aba776e7a1ccba0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKO11880930.
Y.O.U. Reprise (feat. Bernard Williams & Chandler Moore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20de16ba07cf3c4835fc775e205a11f71c5740932b1f333cfa38ab4017f4fa27. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USKO11880931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c0082f1de865ba03e39cf114b329325e014b1589f5aefb9b6451bae5b6e1f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USKO11880932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdb6f0b0850523b33fdefe5ef4b1bbd1b5f57ed59d50c8182eaf4656b3b3858. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USKO11880933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846e8b57a4df11184bb10efdc8eb27b0599c1d6e1b7f0a4618d37ab6a4e52ea9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USKO11880934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399c6a1252d4521f48b3c352bd15081e3be96ed9096873141e2bec39d70b45bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USKO11880935.
You've Been Good (feat. Tim Bowman Jr. & Toya Adams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8848750513600494b8e7a642eb06e22ffaf794cae406206d1fc1a1b57fa05779. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKO11880936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6933b3dbdc2c3224d69e12224c2e82bb85c6c1754f1a12c781b276713b0996. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USKO11880926.
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 0x08b5ce5beccd52e3c2e8403d47da8a263f3c8866483da30ca7bc19ca50d65bf0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US5ED1800003.
King of Glory (feat. Shana Wilson-Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73188dbbefa04cf31524a132acc1281fa9d93dd7f60814f31c19e28ff34be514. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USKO11780604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1959c4915848c495fd3c7a661d542ada462372659c865c8ee62ee21fb2474f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2241630.