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 0x402a1d7d5ce069163617345fe6ee0e6b4af831a6c9511b37eea2106a1b3433a7. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21baec96-da9c-4b81-b596-fc4b28c87a89.json and https://artists.proofprofile.net/proofs/artist/21baec96-da9c-4b81-b596-fc4b28c87a89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bill Henderson With The Oscar Peterson Trio (Expanded Edition)
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 0x7c5cb72497d47e1bd4d578aaeaba8af58558b5f367efdc0b583d1bde9a841677. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USGR10080009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828c24e4b507011d7fc25c71178294f70a7bb3b931bd333d4a94a0d13405b604. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USGR10080010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13348ae0beb8fdd8c47bb4b5b0d1e11fd30580e91f60ecbfdb4d554709d58766. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USGR10001119.
Bill Henderson Live at The Vic - Beautiful Memory
Bill Henderson With The Oscar Peterson Trio
Live In Concert With The Count Basie Band
Milestones of Jazz Legends - Male Jazz Singers, Vol. 9 (1946-1952, 1960-1961)