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 0x57c0e936838faabc41639422686ff074f8401a32f7259388a4ef3f70c3d9a5f3. 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/cf0e8c40-20d6-409c-a832-605e9819b7a6.json and https://artists.proofprofile.net/proofs/artist/cf0e8c40-20d6-409c-a832-605e9819b7a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tomader Aashirbadey Aami Shilpi Holam (Bengali Modern Songs)
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 0x6a7775ad2badf2a128391a65e1d8d2e3a9a7f20debb624ef52801379a9bd6e44. 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/INU130601011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc121de477673d7058e40e06341e76e43e21a9b4e26fc17a527a28468cd877dd2. 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/INU130601012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49c3b57e005f78649cec234930f7030caaffd3bcc84b0a8cff2f6b3dc3aa4ca. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/INU130601013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1d7460fee13c786939667251e2fda561cec56d873d7da471b686e8c5c21add. 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/INU130601014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097ec0784ea7fa8d4a636df2d86943cca401f85a2dc7dc35ca4bb4c12c2083b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INU130601015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c98cfee9790c0cea63463df66fb677351a4f5c31a5449e1018d3875beb1c3d. 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/INS181004901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b86d96b76f73b1330f4472a2067052df005c6406bfe369b9427ec2c48be63e4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/IN0141400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95db837f76804c6888cd79ad65804a22eaba6a94e95c7f9323402b8942ce8ddc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/IN0141400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50424b4f6dee1bf9d62e065c655ead9162ff8000a2f64ef96410bf8215d1056. 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/IN0141400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fef34cff62c215248a7599fba5f6c9d35bea9a7ee8a0eef4737587d4e19b77. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/IN0141400709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e179858e188ccac906b1182049c091511d91b7b27bd2103bdb3fc94b236941. 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/IN0141400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a52b11b294e287476ae3f9f92f9d848f928cecad668077f5156596f2117e2a. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/IN0141401093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dc9782eb42d7cb2687690784d7aab10a22e5282662d2cb4a5b517ecd45d7b5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/IN0141401095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3acd3faa07089fc55b972a3f87bee40e201875bc81c3743e9c8d486efabe668. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/IN0141401097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157c2c7ea2a3f68926c0421de743fcf4f20df6ccdb0a862479b2e62e5fc2c46. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/IN0141401100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93360d0abeb464c961c76bd2545c92288f16c1ed1bd86f94ff373de703015581. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/INE181910832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6b2b12eb1b540ecc8d66772be71883c5ac881b847ff74338939a7b5ab23137. 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/INE181708204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1418bef54e0f8bac9ccad932b5416555e2b4f91198de8ead5af23d4982b42c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/INE181705733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861d043a43ddf4c8584850f5f073e6ff0b871593f46614a1553341efae93e3dd. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/INE182016453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72118703727fa5449a7fe7950f7fa036108de9e1654f04bc6a1f59c4a30b8152. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/INE182016447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04886a04de4ac9e6cbd6beea9f269914737e81593c193cbb72dc6f2ff5bb6919. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/INE181705658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316fd4f4dac668e95b9a103aa19e0e60f5b306ba733ae953aef7b2edd95a32c7. 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/INE181702404.
Baro Bou (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb9d7ff564d3ddee82e449e993cb79263df4f8942c85e184bba5124c5bf515. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS172203948.
Karna (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962092a505331129895b2358277806e044e4150ec37c46de40079f13ba6d367c. 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/INS172203131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a1d5be40568be2c2ad263d86522fa1177d44be005d1ce570aebe5f53ff9083. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS172203133.
Loafer (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08141e0b4241d32bb2d261001a1b16167dc7959d3737f469ec519c9d9d3ee251. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/INS172205313.