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 0xea0c07dad64a09709248f2b8fb24a423ba87b46f08eb424ddfe11e22a8f054e7. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15fa3593-4e05-492f-baab-3b94226e44bb.json and https://artists.proofprofile.net/proofs/artist/15fa3593-4e05-492f-baab-3b94226e44bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Satie: Musique d'ameublement: Tenture de cabinet préfectoral
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 0xc4da25eb5bdb073eef068fdc079a822b43b7557752446a1504cec3c6b686d212. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC9403025.
Satie: Toutes petites danses pour le Piège de Méduse: No. 2, Valse (Orchestral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606c9737a90c109898fc8027b008dad67ce1c08686338bed3488e59fd5b799d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC9403030.
Satie: Socrate: No. 1, Portrait de Socrate
Bernard Desgraupes/Ensemble Erwartung/Jean-Paul Fouchécourt
Tanguy : Sénèque, dernier jour - Satie : Socrate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f37a681dcd4d5cf97b33b371a91e7c098d1d6d36a5878747ba06a2e0d1e720a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC9403021.