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 0x686712f8a5290077dad85693465d191d9fe24996d04b34ec81a8a44b68e5b6c6. 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/58989e3b-3d9c-4965-b4ed-f6e7c93e18fc.json and https://artists.proofprofile.net/proofs/artist/58989e3b-3d9c-4965-b4ed-f6e7c93e18fc.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 0x46cc74b46f6a5e73d7df4accaf9ad464dd33d6f2be0acb71d8c3eb9dc2bd80ac. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKPL1672719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730c921faff30c1ed30aca26b2cd54519622114b17bed8fcbab980fd30abda0d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKPL1672720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce73508491d042dda3a384d0d97dce7b760408fb83be1944b3213ff037e94d0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GBKPL1792866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae95252d9ecd716f700ee9840e37714a82e179f1696540f335ce287f74c120d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBKPL1814261.
Super Blue Moon (Drones Club Invocazione Discoteca Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b365065502990860ba061a32fa64433707f6f45c72863fca44a456e0c6f565a. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBKPL2089075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731f880f5484458da5f974fa80d0b17a56a922248bf90895d2e5e93337db5485. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/GBKPL2282517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7cac102261077b4a6365c194a210bf44564596b212a702a623ca7dc95b3e3f. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/QMDA62497365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5717e8a0231c546a8a325c6be7092972800fdf5d4124c7e3da0c5beb34aa61f0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QM4TX2501376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6496ab87297667ba5e3c5cc0a12660a0eec9200ddd6c63113d59c4af4080586c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2501406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a237bc3066429e25e55b024827de268533cf99b5bb28f726f488452822d75a3. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBEWA2307094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb1d23197115f6fb673e6e61b3444681e0fc3b3399098363d7078ba25011874. 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/GBMA22069579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5d16355f10739e5a6f2e770756ef131a3db73199a3c3a2b45e56c78cedf2c9. 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/GBEWA2303271.
Run From The Night (Record Of The Week) [ABGT533]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bc52c51b6db1e8d6c63d6ecad0436965a110941bfe85a981d5aac0e97aaae1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEWA2303145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0910825a245b870fe922e7349c0be3eb5b8031b6144b8fc20ef61b25cede2a49. 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/QZHN62153548.