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 0xcd222175ea0e12b86de14854cc9a846a4dbd14810a1f50b5d258cb20262a5aac. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20be2b8d-ddde-4102-bc55-2d0175846ac3.json and https://artists.proofprofile.net/proofs/artist/20be2b8d-ddde-4102-bc55-2d0175846ac3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quand les hommes vivront d'amour (feat. Trio Emil Stern) [Mono Version]
Notre Dame de Paris (feat. François Charpin) [Mono Version]
Collection souvenir: Raymond Lévesque à la butte à Mathieu (Live)
Échos Vedettes Souvenirs: Chansons et monologues
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 0x4e5f3b5d9b0bd7a7161ce6e458c1d87ad24b4c01d28a530461e3a08f8b3a3c8b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:45:45Z), 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/CAU116707099.
Chansons françaises à textes : Raymond Levesque, vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b8ebd099767d8133157b8623dd4080a81659b4653647c1e1e85a3642a793b3. 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/CAQ561522014.
Quand les hommes vivront d'amour (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cac2686f5b2d1fe2c21de7df4b44f003cc9e9a3a349b73a91b70179eaaa223. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAJ721364007.