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 0x9ea83ffdeb44125ffdbe6c61aa98cbec1cbde55f0567ad742f673407f064f103. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3851df17-a6ce-433c-9e7f-7197672f243a.json and https://artists.proofprofile.net/proofs/artist/3851df17-a6ce-433c-9e7f-7197672f243a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Contes pour enfants, Vol. 5 (Ali Baba et les 40 voleurs / Simbad et la vallée des diamants / Simbad et les îles inconnues)
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 0xeff62fbd61ea83b6420ff17dda2bfa25508eedb4b5023752adf6720b222e49f9. 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/FR0W61328713.
Contes pour enfants, Vol. 1 (Le Petit Poucet / Tom Pouce / La Belle au bois dormant / Jean le Veinard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdb4fdccf9105dcaa5f6d457ad5ac6cd712351296b1893a64bc2418d40bddc2. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FR0W61328696.
Contes pour enfants, Vol. 6 (Blanche-Neige et les 7 nains / Le vaillant petit couturier / Peau d'âne / La petite fille aux allumettes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695a9114c1ea122206cd3c76c93ee3e62191d5dfaaf1f7ce29b624a37fffbdd3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR0W61328719.
Contes pour enfants, Vol. 4 (Le vilain petit canard / La bergère et le ramoneur / Le Bonhomme de neige)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3de97cfb9f15a4d7f2057b75a3ce1a0c2256818f450dcdf8cac287f37247be0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR0W61328712.
Contes pour enfants, Vol. 3 (Le Chat botté / Le Petit Chaperon rouge / Trois Messes basses / La Barbe bleue / Les fées / Le Diable aux cheveux d'or)
Contes pour enfants, Vol. 2 (Cendrillon / Le Pape est mort / Riquet à la houppe / Les émotions d'un perdreau rouge)