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 0xb63f1e9d0bc429607c85c7b831ca0ad4666f5cd6bfd0b345b77b3a61cf1433fc. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a88a5c5f-7894-4d55-9740-f62222489a32.json and https://artists.proofprofile.net/proofs/artist/a88a5c5f-7894-4d55-9740-f62222489a32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Outstanding Music for Quiet Day Moods - No Drums Jazz
Understated Backdrops for Inspiring Ideas
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 0x448a49ea2ea618eefd13488a2a8400d42f647beb11de3c88b103ea9476887425. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:30:27Z), 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/AUC1F6849981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4b693e13bbab896f09151b5ac5c516127e2a61ad58ca89d4b4b0748dbcc0b0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:09Z), 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/AUC1F6849994.
Backdrop for Simple Reflections - Amazing No Drums Jazz
Musique de la Cuisine de Montagne pour le Dîner