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 0x2b8f46789ec9f2d95e921444125afa82372e758dfc3195b47fc3edff592b6333. 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/cfa7ef9e-2a98-47a2-9b1c-2781c1ab58cf.json and https://artists.proofprofile.net/proofs/artist/cfa7ef9e-2a98-47a2-9b1c-2781c1ab58cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Et sans toi (feat. Oswald) [DJ Creeks Remix]
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 0x7e275a8f2284c0be3d1cf5fc763ba4b0ffc947bc3bea16589dda7609f6c3219d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:44Z), 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/CMBM60220157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317c40bdad374df28e28c374fec28e21109ce4e6cafddf6c0609451b887cf147. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CMBM61797302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faf59d8b7f6751d2825738da4489433ec8e9708d1d80b5566a57053b3044f4f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR82S2000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b71569cffee922ce23dbc99e6f7cdf1dee4ff3a1d79644780297be86ab228bb. 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/FR82S2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f362e3cf69e45d7b2eabf88020030ffeda7cb9849e5189021a6cfcac3823c08. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR82S2200125.