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 0xb79f2b94b5104afc2150dda766588f28a173517042d02c89fd8d98f3747169c1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d69046c-d65a-480b-b9b5-b19053914e81.json and https://artists.proofprofile.net/proofs/artist/1d69046c-d65a-480b-b9b5-b19053914e81.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 0xcb04c7defe44b10755e50f9ee2706d18035f46723d39677adfbd8aad8558c1b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X42258343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7d03901d71666dc1fce1f88b2ad54e0e805b358ae6cdba29a1629efffc593f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX452205041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5298300b9c835fdbedbd3f29b8a3961834c984006d9ff369245a74d3ea9c53. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX202383552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ed3efbc5861933e41ffd831fa494b7f71aa02df039dd6b85b432927adc5df3. 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/DGA052337344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e1cbcd44e7e87c3f941212590f698bc2737a12f548d6bbc7a7f524bbf7ce6d. 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/DGA072318416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a917bfda2e700c8d42cb4c62a307e7868e4e5443c8c6d55177d1e42e08de43b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:25Z), 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/DGA072318415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd90c5caa4c6c3d33ef99d10a8dcbcb586db4e9fcf9ede27ce3cea2068cf76e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA072318417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a735f28bfc37cd0c0fb14219722ca0c9baf4f26eec897a07339881c45b53e4. 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/DGA072318418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2a1a8f328a201cb1d645752832a8669936cb28891a35adc6a4170145ca230c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA072318419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d689560db1e36ff73c4d60f5c0387f5a7f1e4d13b59d4d2abfe257896ddc4c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA072318420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9805c93451d4f6940070c3baaf0059e14737b7c6be8869d2004f1a9ba8d760. 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/QZFYY2351920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035c711ec60fb85d561c4e5cc21ee584eca1b2d208015d190864ea150c035049. 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/CA8QE2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be2df0a89246639d58660b0af82b0132ecdd674dd4020a6fda89b38df794a61. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CBBWP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be2df0a89246639d58660b0af82b0132ecdd674dd4020a6fda89b38df794a61. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CBBWP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035c711ec60fb85d561c4e5cc21ee584eca1b2d208015d190864ea150c035049. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA8QE2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ef8d5797095bcde170bff1f478125fbe245aaf00f5c09f48522d507b273bad. 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/QZK6G2242072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fce6cb92c992a8489691dde33fc2bd077674e43c8ba56515a49554d1980b19. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAC0C2400904.