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 0xb410b99eaf66d0cf9df429d85614dd3745b1bbe9c0c551230b2d60d362d41af2. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/821e68c7-0737-43c6-8bfd-c54dcdfeea56.json and https://artists.proofprofile.net/proofs/artist/821e68c7-0737-43c6-8bfd-c54dcdfeea56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
As Heard on Comedians In Cars Getting Coffee, Vol. 1
As Heard on Comedians In Cars Getting Coffee, Vol. 2
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 0x8297e272a70be574da8ad87ce083b3e4169c35434d2909d8116c6318b67edb87. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US3DF1902184.
As Heard on Comedians In Cars Getting Coffee, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0638ef44c3f3874a41f48f6b20206546282e12715a852be4f4e1a644d2a59a44. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:48Z), 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/QM3DF2254605.
Catch Phrase 10 - The Christmas Collection