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 0x081a74ff11697d9486a4f4bd1f47121b3ffc748b95f3d45a8223cffcf5d1d4e0. 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/cbfa5001-f294-45dc-8f61-0af67cd577ed.json and https://artists.proofprofile.net/proofs/artist/cbfa5001-f294-45dc-8f61-0af67cd577ed.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 0x2c80889efb59d8b48a02b42a004c6f4517c2f7818a864848a32f1e2935536232. 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/GBDJX0000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ad5702fb36e39a2d3062527cdcc2ec36960f8fa5391ad48873832d7e8d969. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBDJX0000008.
The Unnecessary History Of Doctor Rockit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeda9d60ddbd0e47934c50b2c8d19bf08f815386977d34979653b72a77f39770. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBDJX0000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7841978dbb78c03bc7c3531a1c18398e30a693ef686dcaa33d1a7bbfa937d188. 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/GBDJX0000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeda9d60ddbd0e47934c50b2c8d19bf08f815386977d34979653b72a77f39770. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBDJX0000087.
Café de Flore - Charles Webster's latin lovers mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703717e1ad8f78a5f4f6fffb52dc3249175ce429e10ca4f55eca99532c203fb. 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/FRR640790077.
Another Fine Day feat. Ovasoul 7 - Doctor Rockit's Vocal Itch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b08e589fcbc566552e2ad59c4993c33614e8fc577cbf44a56a13e4e1ea9b769. 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/DEM090200124.
All Back to the Mine, Vol. 2: A Collection of Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ea565a3cc61320ff660bc27ae15a32ce27f058fec9340e1ac65979270868c5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBBND9600138.