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 0xfe631dc3bbfc1f1c14cc9c363fd3eb933950cf832963983a1a42bee469433845. 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/7959c94c-e4c8-4c7a-b679-3f7d5f5d6e71.json and https://artists.proofprofile.net/proofs/artist/7959c94c-e4c8-4c7a-b679-3f7d5f5d6e71.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 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 0x92dbb5fc9bf5364ccf0f3c035449b949635086dd81ac073edd242e9a77557ed6. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QM4TW1917624.
Sopla Vida (Live At Gateway Church, Southlake, TX, 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd819f5bb2c9375f0d117b9843b933d1259d961fb07477acbd3fcf4f0d1527066. 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/US6WP2300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b403a32727f6da70b0c6579ec77b54b2775c9fd4dd50df006cfb1ea7aa08f9. 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/US6WP2300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8f855b26faa6d5e69d03990b563e7cff94385584572cc86df37e0f8571b456. 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/US6WP2300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c3d135a9d704ee2c281a5371dc0f61874a1a279562568247b97a649ab7ea98. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:28:58Z), 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/US6WP2200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c456d50064633aa1c5b87fb5cd8ae57d57e87b7f9a0e30e42ec1a9a2ad8711b. 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/US6WP2300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1d2eb2110000ebbcf0edf0c4c23489645be903e6989b3d5c8111cd7d65c9c. 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/US6WP2300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58460710557da34aa63dd294e11e4f66a5d03ac345b0106daef0e02e0a764123. 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/US6WP2300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e22f6ac402030fc9a53e0d74b26555c38bf01243772e4f5e4de80d32909d33. 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/US6WP2400049.
Tu Presencia - Chapel Sessions en Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43541401d9fcbbb7dbdc2000da6c6777b748bea3d96b5d808092606ad6dfbdd8. 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/US6WP2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cee2e5e01f5f04c8a25c199e3721ef85bb2257dbf05fe202f507eb981c56197. 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/US6WP2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43ee1c4933ae8b7ae8322091cfc3725987632c8a0e2768f92c24111a6636f9a. 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/US6WP2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e22f6ac402030fc9a53e0d74b26555c38bf01243772e4f5e4de80d32909d33. 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/US6WP2400049.