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 0x65eb9f4bc8d8b2de580387bfd4b9f13733ed1257bfad5d9304ab2ce533d48964. 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/a5d991fb-3429-4b2a-b6ae-6c9119162c64.json and https://artists.proofprofile.net/proofs/artist/a5d991fb-3429-4b2a-b6ae-6c9119162c64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Misérables - In Concert at the Royal Albert Hall
Les Misérables (10th Anniversary Concert Live at Royal Albert Hall)
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 0x6ddb984454bbc779dadcb52df5bc7f54785964c54b76c74c1f7adaa0eba27aa0. 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/GBBKB9620801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749ee68156d2de29054da32ad3f46b7f5f6804d77519f5b4d3adf731c9f0b2f4. 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/GBBKB9620802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fca4dc84c4b230f6ee45642c59e7cd3a800e7eea6dc58543c568105172d9c6. 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/GBBKB9620806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38f27a400e0d845218cd75486da5575cb61568f3046653bcb5fd81a9cb94973. 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/GBBKB9620813.
The "Les Misérables" 10th Anniversary Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f68e3fde815def6944ddc48bc17f7badffa8192994687997c4103f012dfc270. 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/GBBKB9620815.
The "Les Misérables" 10th Anniversary Ensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73847349e4173e18cbd5d7c260f8eaad6c841d6d2a249fdaec528f4671becd3c. 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/GBBKB9620817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb4be517296bc17e7511a24c69aadaed3470b43ae2a6c6cfdc58e3f877c1b87. 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/GBBKB9620818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a49e23cccd84f745754fc31ddd2e1c3cb47a651ee4ce07ec2f4f90104a8d234. 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/GBBKB9620822.
Building the Barricade / On My Own - Live
The "Les Misérables" 10th Anniversary Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6128823e31a43b5034e76a5ed47a1bc57c996db4189f09c41a36b91e765f0fc. 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/GBBKB9620823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6086319230fb78e56c82d91fed2ca67d31c107077674d5040ac8895c53409c9. 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/GBBKB9620825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb63f9454bacccd9eb8932d9b19ea7de34463c2f7f889463b53ed13d64708f8. 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/GBBKB9620829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2103a1ef83b764f84944dea3b237759e3f0e5e8e2a8766a546f63fa1b784bb3e. 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/GBBKB9620831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9019fdf036ef5f9a9b2f4b857e1b8b11fe5be43efba0f42c180431799d7876d3. 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/GBBKB9620839.