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 0x6c8e7ce7836cdccb98e64858638c727205274af0d230445f22079adf941ae478. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/653e51e7-9222-413e-afff-526ab65f5b04.json and https://artists.proofprofile.net/proofs/artist/653e51e7-9222-413e-afff-526ab65f5b04.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 0xb56bd63a450abe68b85093dcaacebf81ea468fd09ba2e84a06f13e9a5b0b98c7. 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/GBPS81735758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5eec73a8ea09ae1ea27c1c6adc8e722be3d34d209728cb5612d2389674faba. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEZN82364553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc151063c59cee00c4db8c550232e2de3876d5070ed2442cc3a842dc68ac8be. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DEZN82364554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ec1d6bbe0d6033b4775000ad89c4e00bc5c1c6c229a2bc405796ba43401be. 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/CAQOI2410188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff02bc959134b5451295ed8b210d589c3fc7af1e33ac0d96aa931645aa98f66c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CA5KR2477025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b1af4becef9f9036b642a99d200f6fc5d9871ccbc86d93de0f75f6547b9b76. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMHK2477293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63667ece971629b9f12cc6e560e6d08d39aecd09813b03eb34f8511e1782ccc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXA3V2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41451d08947892d4abdfeca88abe59212e4f1a963d9a80d8abb4c11ec47349f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXA3V2400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f79cbcfbc6f779c9f6fbb5200672993c85109d872408966dde0cb01f6629036. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMHN2422768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182c5f558271e50064dec9d7bf21aaad8cac4e051b0b84bac8c6f4f4a476f30c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:15:47Z), 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/MXA3V2409758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957b9b65d600c1e93614a14a4fd767b38997eff1e2b1604d272dd0581672f0bd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXA3V2409759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1533e117478800e44934b9672689a48955e900f78752e301fc7a7d102a262e24. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:33Z), 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/MXA3V2410057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474cfe70d640a956ab2e7c53bf3ccfda0c7b0b54fcf8e654016c670817991917. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/MXA3V2410058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d663b6c88178bdf4dcb7cfc792b6bb5ff641fcabe5ad76ce82a780c7f14a56. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMHK2529895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5492f6aa186d23c6033ed0cd083fdf7866db42c2d9edec7334c4717256a0a4a7. 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/QZMHP2528701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6029cadbad6b5c70b5fa5c77e8b53cd9653e19231152e09b7b165747e176fc. 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/MXA3V2434901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977d0995bd54006e3421f4fd83cfcdb551ed67f31518698f851fd08f60df63e2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXA3V2434902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb0af74a0bd221c685066d4ed79903c17563b9dfe53f3bf7c3d09fdfb20a4e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BGA472520605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a14992df71055f3fd129d80f34e44fdce774f1431b6fe4c1c9c575c350868c8. 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/UK6822512320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1f410705695bb42291244f3c38ac3ba934216a387aed107955e1e62e2cab53. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UK6822512886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87daf7c83b467723a9ad3c4aa3b4c438f8738fb38df0c6a4e5ff89fcc38e715. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAQOI2529240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c40db9e2b42acac6b71b3a55efb69fe1eb0db730474b36fa200712e9c1302b9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITB841700302.