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 0xc91b978e70841fc1936e6924de656c976a9009895617875d7bbee4695e20c5d8. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8623872-35a6-44f1-a2cf-ff62182cbb50.json and https://artists.proofprofile.net/proofs/artist/c8623872-35a6-44f1-a2cf-ff62182cbb50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven Classical Piano Works (Volume Five)
Piano Sonata No. 15 in F major, K. 533/494 (I. Allegro, II. Andante, III. Rondo)
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 0x09a9af7fdd7033befad7b979e16d3da3dbbcf59dc35161a2ad44eb6c9b499f9d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:43:29Z), 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/USJ7U0715002.
Classical Piano For Valentine's Day (Volume 2)
Classical Piano For Valentine's Day (Volume 4)
Classical Piano For Valentine's Day (Volume 3)
Classical Piano For Valentine's Day (Volume 1)