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 0x955a466064df4591c0e056d1b7efe8c008dcb789164154eb0ba5188ee00fc95a. 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/59a18337-bc1a-4d31-9a45-699c56b9b674.json and https://artists.proofprofile.net/proofs/artist/59a18337-bc1a-4d31-9a45-699c56b9b674.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 0xa355335840bc524a7fd4a148acce2508362dbddfd252945da2fae28ad32d1d25. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USX9P0625672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8a06a07012b7ec39b30e97979f6f33b4c94b2045d67b77db55bcce3642de71. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USX9P0625674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746709ca5ef5b5aba4c1b653d273a6c9b15e8a913e2f99be6ad81216054c907a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USX9P0625677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1340b91c6ce29ef44b015e82fd8d64e8d7cfd923baf81a43edd240c07a02a0b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USX9P0625678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d212a06bc597f4abcadc1f5288c2ef9e2131db29057f023d807d3c38d33cc96. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USX9P0625682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b67b2a3eb9e1047b4d58d8148de12a650b813a3db71307ee247aeef28a92a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ1385914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab349f7a9c4c826408f627d8cd6c1592b337c1030eb795a66f4cf38cabe95832. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USCGJ1418752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18a3786753b0ae898c11ef817ca62fca12f7b430cabbf1bd964ea0ecf2b4d1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USHM81400627.
How Great Thou Art (Acapella) [feat. Amy Wolff]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90a607fca6c9122d1165dd92c7b130c5f1ed942695bec0767a444514405f8d0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZW9N2256913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada1818f08843aa30082549ef539fffa927c8c05aef64f4de1f18809f50df65a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZW9M2319502.
O Holy Night / O Come Let Us Adore Him (Unplugged)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62261e12fe726269838c8a7fa1791316d72beac9ee525a9b4fedc4f0cf6140ed. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNJW2573089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10259d114a152ce7eb2e4b88d173bb5de30a4fc2d7059c2307fec53b3551852c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJW2587281.
En La Intimidad (Cristo Yo Te Amo) Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f4bdd4a4f8c544088b5ba6491558364ef8bef16b75a2e87f5086a9416564a. 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/QZGXC2000177.