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 0xa0522b72adaa55fc120f3df1e554bd9226d50790cb5ecda13421e839bb3017d3. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9370bd4-d62d-46d7-adb4-c80732540b95.json and https://artists.proofprofile.net/proofs/artist/b9370bd4-d62d-46d7-adb4-c80732540b95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les chants matinaux des oiseaux, une symphonie naturelle
Sérénade d'Oiseaux, Améliorez Votre Concentration
Sons Relaxants des Oiseaux dans la Forêt, Mélodies qui Apaisent l'Âme
Sons Relaxants des Oiseaux dans la Forêt, Mélodies de la Nature
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 0x74fdf28d1ccca1395dc72a95de2338d1426166c0f15d5ebada0ce3ddcc0a471f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USANG2464633.
Sons de Petits Oiseaux dans la Forêt, au Crépuscule
Sons de Petits Oiseaux dans la Forêt, remplissant l'Air de Paix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f4223becd1d1a1a576fd8e51625b204a2b18e603f18064d23de125a67f9b50. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QM3DF2403542.
Sons d'Oiseaux Sonores, Aube dans la Forêt