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 0xb0b8db927fb052e30ee43f3a751b173bad3235d76d6388e1a1ffd6567b8bd711. 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/aa55951d-3aca-4201-a9e4-cc02e099d496.json and https://artists.proofprofile.net/proofs/artist/aa55951d-3aca-4201-a9e4-cc02e099d496.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 0xa13b59321a90ec96ea1392fe77aa887970a253b35eec5a6c1a51fcd6fbf0a815. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BXG6R1700432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04fb92f743a580b4d7e0f0e0ad8cfb3cbe4be39bf116752ecf1d180ead47fb6. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:17:49Z), 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/QZHZ52182789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494413a4f0af7c6d63c2f6868bb5a37790b4a4cc33ec055d13045e1e82cf59f5. 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/BXG6R2400936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7727c331c9d985f6344773ca5b0ec900a9c5f5802644687e106f067494588057. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2400488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c103f469b5cc6b1acd7198cc8a3bb13fb2a66dd5eef408bd8f654b0b4e4b491. 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/BXG6R2301082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d9b53e927958a735e12f71d26b414f47636c82dc7443eaf60e8a2d72f42614. 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/BKIND2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419ad980b1b98557d42baf0dd95daae5146789c64bc735265d2fc83d85d5c0a. 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/BKBSS2400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80d90e2de4ea59f2f97fb262331319bc9b6285f4e2f77d285edaef8b3823706. 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/BCDMP2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d21c31833faa72bb57693dd878de4f524cd770222107b729dda8cdb4707cc. 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/BCDMP2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406fe091a02421f5ac46ddc18a42195fe2f1e5736e32fc4166e327b3f72917c3. 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/BCDMP2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa92f5e43ae38c6296b13abfb430bf25f347839fc65e3d485e7afeee21f47f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCDMP2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2f6358ac094e0a565fe5b1bb5b00722d82dbc16471a9de474a1d5c54f70080. 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/BKBSS2400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7f2d639024ce0e5f5eb95708909359528d99668b808f10180c87c56b46612. 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/BKBSS2300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1cac77b540651261d90ab3f746a563f6b810ecae7280b47701c98008f1ab19. 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/BKBSS2300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27b33fec7d72aa3502febd5bf5fe7dc1b5b62ba216dca96929338a9dbeda210. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2300848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26f4bd25c7667f9414fc352f88b3a6878d8337fec58116c30f3a793ebe55c2. 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/US7VG1547136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ef6c2269f594a8fbb4abdc8a096045d69093f7245f4967ca0793329bd13401. 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/BKBSS2400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7f2d639024ce0e5f5eb95708909359528d99668b808f10180c87c56b46612. 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/BKBSS2300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d407501a453fb2db3fa8fec42bcac4a01c80256b75ed9b0ade57ac8460ad686. 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/BXG6R2300773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bb13b56d79844ac0c1f8efaf7a0c19f18252e6f2c9ce8da68c081ffa30203b. 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/BXG6R2300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074c5799e3c4663fe23401e63852cc1bebf07bee85b8cc42726595a1a1f8234b. 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/BXG6R2300775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a576ae5d030f8b919085f8a709645506d295fe02fa19b776e3027e4755f449. 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/BXG6R2300781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44b189245d0a7c8dff10427f58832fc4ee70ebf987fcdf7853f43dff20d84ae. 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/BXG6R2300770.