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 0x5c8d6640f3da57801ffa56719ea422f3bb989684c255a46e67726488ad0d37f0. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32cce3ab-6445-4da5-81cd-1ed865704ea4.json and https://artists.proofprofile.net/proofs/artist/32cce3ab-6445-4da5-81cd-1ed865704ea4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x323b171e7cbe01e37fff4fab177e795cf7e9c2314badb6dc477610581a8eb58e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEWD62000318.
Home & Office Cafe Background Music, Vol. 2 (Finest Jazz Lounge, Smooth Jazz & Chill Instrumental Music for Work, Study, Reading, Relaxing)
Home & Office Cafe Winter Christmas Jazz (Finest Instrumental Winter Jazz Lounge Music for Work, Study, Reading, Relaxing)
Home Office Cafe Spring Jazz (Relaxing Instrumental Jazz Lounge & Smooth Jazz Music for Work & Study)
Home & Office Cafe Summer Jazz (Relaxing Instrumental Jazz Lounge, Smooth Jazz & Bossa Nova Music for Work & Study)
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