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 0x77d8db08311396096f232addf080e8c41b7b4e7b3f9db6fe80c82002852f8843. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ca1f84b-542d-4a2f-a19a-7db4c1057c5f.json and https://artists.proofprofile.net/proofs/artist/7ca1f84b-542d-4a2f-a19a-7db4c1057c5f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xf5cfde01787694db3584dfcc1dd7f3aa858eded256969fc0250a03154f962f4c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2454191 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf17be86ebe0a895f2075270f4a54db7a05cd917cb679f2f95e463d94b51b345. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2454193 — a six-check JSON result.
Vem Com Noix - From House to Disco Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c18c13ef178aacf1d99fe3fdc68dd785afafa1ff71d966492e1680f0cdbdba5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72200409 — a six-check JSON result.
Daquilo - From House to Disco, DJ Mari Rossi Remix
Daquilo (From House to Disco, DJ Mari Rossi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec46f437b4474b0cd32f4a16b79ce2a5ca578765a791dc0a5a477efbcb4abe. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCD172100011 — a six-check JSON result.
House For All - From House To Disco Remix - Mixed - August 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a9da84a54904daf66fd7bda0d5f37f87e289a515c5dd2de28b57c9aa4d9ef5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72400522 — a six-check JSON result.
Gasoline - From House To Disco Remix - Mixed - August 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf898c91121d62d468f33b48be3506b7448a50c336787bfc134d190145126f38c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72400524 — a six-check JSON result.
Look, Listen, Love - From House To Disco Remix - Mixed - August 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f21eca8d9065563ef89fd5752bc8c07da123f3e2e42638637eff262b9bb264. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72400525 — a six-check JSON result.