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 0xdf65a3f2b52757d2f0333065231de4d7de8b41896971f772e2b27f3513e2432c. 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/533ee4c2-903c-493f-85f6-ad2946b8362a.json and https://artists.proofprofile.net/proofs/artist/533ee4c2-903c-493f-85f6-ad2946b8362a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Original Bum-Bum de Carlitos "La Mona" Jimenez
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 0xdfd3f5f412e523f745816e5bf1d443fa99ee4094eddf5a58be44890566779b4d. 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/ARF119900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd3f5f412e523f745816e5bf1d443fa99ee4094eddf5a58be44890566779b4d. 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/ARF119900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8afd65ebee42ab8b85a5ee2f713c71c6fff76d7a44b0322ce898fea2935312b. 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/ARF119900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648db0f014d8de1893a257be265d39e2f76bcf5d3a6bc5a8677cdace32ce365d. 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/ARF119900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d63d67ada2f867695177d44b8bd72dfd6bfd17fe8dc74bd2ee1b269938dc36. 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/ARF119900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083acca19d6c832002aa109c272412113aadb32ac3a9da29717c9fd3ce2318ae. 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/ARF119900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0947ce2d0c31f2a3c5c9f3e435bf8eb671cad3ebf14233f3a03a1a61aaec7a51. 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/ARF119900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec89535babbda5e7209b6e8c58e08d353f43c5ec1ff934aa6fdcc00850d825ae. 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/ARF119900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e794e94e0747d6e8481a9066023b6fb401e4453418fbab5d72f2c6e15c0b8. 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/ARF119900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ba40ab384a60ff453c6f35e94f2a9c5993f2c2767c2ca25239a769228a5620. 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/ARF119900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb7878d1d934507835044303fea41ff70cf800e423520cc36d93ab6a5b98c13. 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/ARF119900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8043eebd0e1524af8cd1baf533713d55254301d9dfc57b6051956f119241b9a. 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/ARF119900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b22a866a1e0311b7c13a7e855ab6224b2638f296819d35c11689784a658f51. 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/ARF119900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3743992ca27b72357d13d3d12211aabe1cb7d447a08ece2ebd8c231601f4a03. 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/ARF119900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6da69294049426ab2a84c4729517a5bc8fff79c3b81929bb5de78d6744f61e. 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/ARF119900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c2b4b0d127a103cdd65c0afe71e8d96959172ac179577dfe45cc024349cf6. 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/ARF119900217.