1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x432d0c9e04c1528a24c54290a0f7a52b812814366ad7118ce1dcfd7980e30495. Chain 2 (Bitcoin): anchored in block 954010 (2026-06-16T21:41:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33d4d8df-f975-4694-83f0-26732ac6214e.json and https://artists.proofprofile.net/proofs/artist/33d4d8df-f975-4694-83f0-26732ac6214e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Comptines et rondes enfantines, no. 2 (feat. Anne-Marie Duverney, Philippe Soupault) [Mono version]
Rondes et comptines, vol. 4 (Mono Version)
Comptines et rondes enfantines (Mono version)
La marche des gosses - From "L'Auberge du 6ème bonheur"
Rondes et comptines, vol. 2 (Mono Version)
Chansons Dorees De Notre Enfance Vol 5- Minitheque 32
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 → block OTSBitcoinBlock must exist at that height 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 0x4c6c2104c290d580c1cd803f9b43dee32149f530b4db1d00f2ab9f48ae117235. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH6542385310.
La marche des gosses - From "L'auberge du 6ème bonheur"
Chanson pour faire danser en rond les petits enfants
Douce nuit, sainte nuit - Oh ! Petite ville de Bethleem