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 0x642a4a5b6350c41f144c51a23baa85ed3275d36c9b3d526395b8ca0a9e566748. 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/fe25b15f-3b14-481c-8f54-1406f0a36b17.json and https://artists.proofprofile.net/proofs/artist/fe25b15f-3b14-481c-8f54-1406f0a36b17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs Of Taizé - Jesu Redemptor (Jesus, Redeemer)
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 0x087f5eb76f204c8aff897270037b45e8163334c1bcc802bc8082e5bf6919408f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBME51301501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff840ec7e18911b769239829f433b6949a9385baa52201190e7f766eac2fe1b4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBME51301509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc3cd03d789520c7616cd41d6c41367897ff423bd838ca4bcae3ecb53bf6c73. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBME51301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6033be41aca9978f59029b8c739d47ac754d52172ad8e8692100a4e9224b8d40. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBME51301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e22fac56a09846ebcadb2c1f625e48b33fcdfb27c79ef8041d9464483df8d2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBME51301402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd7e71865d7af5a803911ffd84d0493650b44cc0d6fb3ab02d62c50b782b4f6. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/GBME51301405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea83c707648ac6cc03901ad95ea9189b17fd663fffc94e0848e19201211e073d. 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/GBME51301407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0443a5a13266f558820adb5206ae78cc3edde851a809890239cd551415595d1. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBME51301408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99690d63e0a7cca43fd59e819ff45f969d28601a964f1d5ce1e44acb892a1e2c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBME51301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f5b216aac9efbf97a54f78d274be1264f19edb7745d112f54bbe4e38b48657. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBME51301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9327af520bafbb1c72f76d04bb9a7266c8e9852d4623226f953da2495b758462. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/GBME51301412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084287dd6e86f61107abf4ef33a415e7e90dd1fa36415a10d864c306e9233905. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBME51301413.
I'm Not Ashamed to Own My Lord (At the Cross)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31eebc6df52e7189834979125782673fd8437b1e968b7557381d4d3e2ac490e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBME51301414.