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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f8468c50dd2be1e2774a52f84ab91e5e384a4fd485c84708d4f585bda2cc3e. 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/f00e0693-ce80-4576-94e0-bc261375648f.json and https://artists.proofprofile.net/proofs/artist/f00e0693-ce80-4576-94e0-bc261375648f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pobre La Maria (Bachata) Homenaje A Luis Enrique Mejia Godoy
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f80ec98e3db79d345e2343e0000b8411406e70ba6e1b1088fc1fa557763046. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZZ7W2468702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e690cfd4f3ad1d3ba6ee08c35951a55e94666f9d68f3a61af98eeba80de64b. 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/QZES62556612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe834cfc494528d69efb352ec7984e0265eeb040a848f75171159ead135b23a18. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72517498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd9b59bd2c1eb7fb82a6a234aadaf3085f2de76589edec6bf95a4509db6c9b4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZHN32514106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bea93960554a0bb56e9bef9032b935a316cec94802f5e846a8bf98c5ebe772. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWW2523628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895259255cef4ea8d355c744266d2e1b03c01b18e7b262b740fdbcc4bcc839a9. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:48:19Z), 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/QZTB52555831.