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 0x80332ee528f12c91b92b852d53fcccd6af6ba06af3fc2a140d683f009177caac. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d74982f1-008f-4e9b-a88e-e6b2c2b4d393.json and https://artists.proofprofile.net/proofs/artist/d74982f1-008f-4e9b-a88e-e6b2c2b4d393.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Diggity (Live at the Gösserhalle, Vienna, Stream Austria)
A Good Lie (Live at Gösserhalle, Vienna, Stream Austria)
Live at the Gösserhalle, Vienna, Stream Austria
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 0x886f23c2cd24478dde498bdac2a71793a05d23d465ab3f7180f68e5fa7719989. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:38Z), 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/ATJD12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b93a4a652fd7740e3260a13a871a7fbfc8864b966b35e919d057c0b2179c0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:00Z), 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/ATJD12500002.