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 0xbea0881d7e90c268b3d9a8f6ca879ca38c8aafb4364082375c69875c95f8fd14. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/073b28c8-befa-414d-b339-7d2e5b531125.json and https://artists.proofprofile.net/proofs/artist/073b28c8-befa-414d-b339-7d2e5b531125.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jephtha, Acte 1, Scène 4, HWV 70: Choeur des Israëlites "O, God, Behold Our Sore Distress"
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 0x74085668b5d1634cb70f8ef24e47cc39b2d7aeac4e18cb5bf1af846bd952ecf2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ170502780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c764ff069bfd2d701ea8ca53ab4656b17c0bef17f8ea7afb729aff158b22d12. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ170502600.
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 0x450403f4750a1d8ae3fc9587e9af62a4e652b827e75c1fbe58d9cd51940ebb0d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRZ170502610.
Jephtha, Acte 1, Scène 1, HWV 70: Accompagnato ''It Must Be So'' (Zebul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67b81ade3c4a62f81f30c6e5c0b2f0ef07b363889c04c5095edd9be39bb27d3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FRZ170502620.
Jephtha, Acte 1, Scène 1, HWV 70: Air ''Pour Forth, No Unheeded Pray'rs'' (Zebul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f991ff1523f3d37e45899709a690ddebea8c8b9c13029a2ac14562e95d2792a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRZ170502630.
Jephtha, Acte 1, Scène 1, HWV 70: Choeur des israëlites ''No More to Ammon's God and King''
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b731dea2eef152677cddc4aabf269daa4c7f8228475d891114c803aca1c34be. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRZ170502640.
Jephtha, Acte 1, Scène 2, HWV 70: Air ''Virtue My Soul Shall Still Embrace'' (Jephtha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2594d032ce3b7524a805b3455972d7d7e866880f8d29b95d1c0be4cbb021e9fc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRZ170502660.
Jephtha, Acte 1, Scène 2, HWV 70: Air "In Gentle Murmurs Will I Mourn" (Storge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b15081301ad96ab1257647c5a64bba3269e8d05e972e6213921fab007c60b92. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRZ170502680.
Jephtha, Acte 1, Scène 3, HWV 70: Air "Dull Delay, In Piercing Anguish" (Hamor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9ad773b106c1e0e7cf9dae6e5dc2ad8f085bfb9aacf7c0cc5d1241a9f6f45e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRZ170502700.
Jephtha, Acte 1, Scène 3, HWV 70: Duo "These Labours Past" (Iphis & Hamor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f8cd24a0f022b825ea7357802dd071a5ed1a31ad4383c5fa68369172dabe9b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRZ170502740.
Jephtha, Acte 1, Scène 4, HWV 70: Accompagnato "What Mean These Doubtful Fancies of the Brain?" (Jephtha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43413ec88783628b0189a85783370dbafdde7fb8c1dd5180f3fd00584d3d30fc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRZ170502750.