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 0x056fe5c22015371f8271e89328112109e8be4145a0cea2e7b7866093ffe43eb9. 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/cdf2561c-1d82-4fa2-86c3-49c7ebdcbc2d.json and https://artists.proofprofile.net/proofs/artist/cdf2561c-1d82-4fa2-86c3-49c7ebdcbc2d.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 0x477ca90d244e22a0cabbb4ee8e507093185cbecfd5922375e94fc9c7a3a30f7b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:53Z), 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/JPA962180040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d07ce196aab5f894363ea633c91b131fae0e87b0049b3236b2caff7f6aa08f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPH202100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187752edbc34a7d41ccf119d8a424f90eb5cb064d7be272d15789771f8f15b19. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPH202100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190ed2d2f92022bfe5005cffc194d75e553b46015f1a7c3f8bfad21bfab67ba0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPH202100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc9c4790a0894b8157e16d88e4c579b38db3feea8451c2d03e27942ddd81748. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPH202100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe68d3aa52cd3e1ce5f0b9c48b207b8ddc3cab1aff5b9a3b9d35da3ef0e6cfb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPH202100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ffb8ab98366be0005b7d8c8de04f28823cf0a9c26de3f710f47915854e9b80. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPH202100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4325762f8c76893d40281132a59d2454c2d10f939f2b16e08515c77e97be1922. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPH202100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eec6168c68b757c4ac5bddb6e99131ff62b84dbfe970e227698636dacf3edac. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPH202200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951faf62a82c0940678eae13f7db7604b6b9559b80a2212a188addf46c2a3fea. 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/JPH202200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf1f523e24053b5d882f91946d871d34056d551950b73b8577a654671182125. 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/JPH202200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f5c3bc37460fea6c6ee8444b39bfd7830b7430e9e751abe4bbc7b24b79fa57. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:07Z), 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/JPH202200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7643ebc20e98a887b6c46491f51d12054458767274c129672aad74be503ed55. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:53:29Z), 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/JPH202200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802bb1a85ffd2b2845a64afc85ffdb447a78a126d79c1bf7182f02dd45ea4da3. 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/JPH202200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc94a4216b4947c1eb62a2d1eb00c79bf6b90b039705016e71c1513cc45c6ea0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPH202200026.
Timeless Melodies - a tribute to dustbox -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9353219af29fd51a99b1a803170aea1bd060594a5af47af279c0e45e044b226. 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/JPK402401180.