right|thumb|Bust of Marianne sculpted by Théodore Doriot, in the French Senate Marianne () has been the national personification of the French Republic since the French Revolution, as an emblem of lib
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 0xa13d89a722c89e06daaa256ca72c891c80538312dd11690c51960cd77fbf6f10. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ffbf0cf-6fd6-4f1f-aa43-308c0d0b9968.json and https://artists.proofprofile.net/proofs/artist/8ffbf0cf-6fd6-4f1f-aa43-308c0d0b9968.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Feelings (You're My Everything)/Paradise
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 0x8eeddee00106233d97115d82612bb5115b8f7e804438444a38dae7b9f12eaa01. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/MXF149100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048ad2bb8b96b417e521aa194ea58a27118136592eee38af20cd410d953f5e53. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MXF149000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374fb7e3eb7b7cdf32ae2b91e966c9e63055ce965414bf0189326485c08e6f9f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXF149500404.
Eclipse Total del Corazón - After Hours Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e977df5ab8eccb566e234a7fcb1358246f313ece964b52ac20a5e341ca6909. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/MXF149500407.