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 0x5569a7d18bbd0f588231a9c9ec43510805022844ffc516828fc5b659b7e5a5de. 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/92e4a83e-502b-4a8c-bfba-e1c3569ae14f.json and https://artists.proofprofile.net/proofs/artist/92e4a83e-502b-4a8c-bfba-e1c3569ae14f.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 0x8b25dee74f745fb13398897ef014e1ac70c28edeeb4c442a75499cc92dd2a4dc. 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/INT592000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d06f9a8503140c57125fb648af21775d7843826903e9162fe8b4c1359afa1e. 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/QMDA72150526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6e01a0f9b4a6a542fb30c35e6cce56b8d458f06f5bae5f6469e94a5e01c0e8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QMDA72150534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587b3c84b1d85093aaea526912f1f005c6f631c4230c40767b66682f1c9ccab8. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QMDA72150536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd89510c8348286f517d94f7b0d653f06e5b6c5c76180ed6f130941f45f1f06. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMBZ92367972.
Chhauri Kumarki Sab Bolbam Song (Maithili)
Devar Ji Mare Jab Chilam Ke Fuk (Bolbam)
Ghaate Ailee Chhathee Maee Aarti Utaro Ji (maithili)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a9ea793dbf7584b08ce6b8dabbfc1d3db55ec193e5b099e0a232875cefd442. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ING212341586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb5be68f2d858fbe9629b97f73ca40270626a195571147fc353646edeefe9f. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/INE182452045.
Banjhin Achara Pasari Ke Rowe Mai Ke Duaari Ho
Devi Maiya Boliya Bole Chhay Koi Nay Nik He
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2db072e3703149c29aec2e28bf711be94190b173173c330d099b8893cbb474. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INS182402451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e737b2e52dc1be3b540d1e51fffe5315e81f2b0272c00d5cc64a385d04eff99. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMFME2595126.