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 0x47615e45f63641c3f7ae4cc1f8f0d827e4a68ff3fe798573afd1af559b21be11. 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/84287150-4218-4798-8396-c94f123301ea.json and https://artists.proofprofile.net/proofs/artist/84287150-4218-4798-8396-c94f123301ea.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 0xff091e488ba778575cca665e3969ed6710ace67e104539e3ff2e7a7fec02947a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CAC0C1700411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b33f6a99cd301db6855afd72c6a4f6d548aee8f5135c490d7ada4d7c9736bd. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/CAUM71800258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db3bae440737c4a769bfdc4dfe5b721cd91b3c570c755f3f347493f3df8649e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAUM71800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400e06dc5379375d9ff284b07ffb260449d617ed1de00513776fbd1670a12df8. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/CAUM71900223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b33f6a99cd301db6855afd72c6a4f6d548aee8f5135c490d7ada4d7c9736bd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CAUM71800258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fe57b6f76117a6b9e7cb6195f4ae5a6d0f510815ae0d46db123ad62da9303a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:22:59Z), 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/CAUM71800260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ff84ef225fdbf8bdc103de115e25126df573f850e3d0f91480127e39a07c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CAUM71900377.
Emmène-moi (Red Farrow & Slater Manzo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d840eb8f62aaf6bf181ddefdd22e16bf5ffd85c1bbc89a2245f77862b5cb5f4. 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/CAUM72000193.
Alibi (Under The Starlight) - Rainer + Grimm Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cd2cee88818a53ed06a9d56e2a6bf95aeb0506fa4cf63cff307edbe3e1bdd2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:44:00Z), 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/CAUM72000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751e9ea17df1f5b504d6c77020054bee22f2af00c72bd9e0def1f712d4f41ef2. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/CAUM72100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9f31621d96cb4631eb9d6cd1158d4b875a7e193b549363357097d49e0a2a58. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CAUM72100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa225cbe257c2623138ce0729b4e6cd8a06f412a5162c8e8509ce1e7d1f6ff. 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/CAUM72300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305ab97b3017536bcaa29774835dde075399fc189cd0b6f356c2b61eb871a19. 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/CAUM72300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6002ee629e0e362c3c4f664e05da376a1df032822abc7f095b24b4052ace4ec. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CAUM72300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa225cbe257c2623138ce0729b4e6cd8a06f412a5162c8e8509ce1e7d1f6ff. 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/CAUM72300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305ab97b3017536bcaa29774835dde075399fc189cd0b6f356c2b61eb871a19. 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/CAUM72300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d840eb8f62aaf6bf181ddefdd22e16bf5ffd85c1bbc89a2245f77862b5cb5f4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAUM72000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab4894de99d487fc78de063d063438f96916d53dab847c5ecf7b776146083a2. 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/CAUM72300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab4894de99d487fc78de063d063438f96916d53dab847c5ecf7b776146083a2. 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/CAUM72300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51c33a9457f2134df87bb431cc46430193d0fcec6cd7381e92abaac96920da3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:34Z), 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/CAUM72100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4935c6e1f0b1ae2b8279fd6d8fea7c177aff1e85bd7b7aa58b71c5e3b52561ba. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CAUM72000086.
Et c'est pas fini (feat. Alicia Moffet, Eli Rose, Èmile Bilodeau, Jérôme 50, Luis Clavis, Mike Clay, Roxane Bruneau & Sarahmée)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d671929d1b73e22b8ffeaed34f371e3269aa076655f90b719663747d89125f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAQ522044001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde7c960429b18a15a169bff39c4d5b87923ac9a11191ee5bc3cf1d2dcbe0ec2. 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/CAH682000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe01f4ac6d6519741ffa3ba7fe823e0dfac098cf3a90c60ec433dd5bb58e5034. 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/CAC0C1600395.