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 0xf5e44a1d4cb4969c6a76a0f1f4f28003652e661bc4300da57e0f6d612314cbba. 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/07fce549-ddba-4f82-8acc-323fb969baad.json and https://artists.proofprofile.net/proofs/artist/07fce549-ddba-4f82-8acc-323fb969baad.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 0x1cd21b0a4b8abc60ec438e23e59285976f31c0b0e398c3275e39b406c8acef20. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/FRR641100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b283e931bb4f519f9d7030416463dd691871091cfa6fb60f92fe394abc53e2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRR641100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b06442a61938f08853f6d5e7c741edcbd671a701bcd3b8366772ac91253657. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRR641100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b06442a61938f08853f6d5e7c741edcbd671a701bcd3b8366772ac91253657. 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/FRR641100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a78592b98d3f4e6553e781e44894348298e504956ebfc357dcf7ab420b4225. 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/FRR641100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7260a36331d492a0ff3b729f3cda2c1c71f757cc0eb53b76cbfb9f9ed0fa28. 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/FRR641100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21248823fa4edf75198cb7431b4470747c05067153102d277e1c3d6df4ec8709. 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/FRR641100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583bc856506e4f309a9f9ceddb5a0878bb591cf04172d346d8e68ace952996a1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FRR641100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ba7644dbb738e19308191ca4afb487e49ec0412da69727545a29373dbed23. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRR641700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250de8512632d62d7cfcedc8f571c362d7eeecb160f7483789986cbfc939581. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR641700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd724f3df8af36d0f50d1f4554f1afcbd6b78ecb2ae3154197d53a33303de4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRR641800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11ee96cd10bc1406a4fd7f73db0d39f8596870d6eeb61a5f578c841027d162. 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/FRR641800260.
Ce soir je m'en vais - Dombrance remix (edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceadcf739e60cd6bd58580a043358738c36fd5150c5bd937b869f7ab4626acb. 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/FRR641800422.
Stop or Kiss (Midnight Generation Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65dd25a5096b6d23a228a22d6a09318f1b0890bfc30fd3ae24cebf3dfaac3d. 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/FRR641900494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65dd25a5096b6d23a228a22d6a09318f1b0890bfc30fd3ae24cebf3dfaac3d. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FRR641900494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3f420ba79cc4aa0ea4f2ea613e534293a213e5f4232a633c679fd8af0070cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR9W12338884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e417b32de29ea2f039fddbf56d5c79d56d54944c65f8f3c26fef158967c575. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FR9W12406807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6fff09481ce2c00104fb44b2b51c41643835572a49bc41c8e7bd2a1c890cbd. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FR9W12500882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250de8512632d62d7cfcedc8f571c362d7eeecb160f7483789986cbfc939581. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR641700201.