William Richard Frisell (born March 18, 1951) is an American jazz guitarist. He first came to prominence at ECM Records in the 1980s, as both a session player and a leader. He went on to work in a var
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 0x86e8c307dbc7e27d235748de3e0bb3bfbbc757fb5fe29917fc4622bb116f7a24. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92845fcb-c5e4-45d5-82b4-8cfac2d107a2.json and https://artists.proofprofile.net/proofs/artist/92845fcb-c5e4-45d5-82b4-8cfac2d107a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wayne Horvitz: Joe Hill: 16 Actions for Orchestra, Voices, and Soloist
In The Wee Small Hours Of The Morning (Live At The Village Vanguard, New York, NY / 2016)
In The Wee Small Hours Of The Morning - Live At The Village Vanguard, New York, NY / 2016
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 0xd9b8e76b2ab5e01e8b6b216415491149f0d6c3fb469d8438ddec7beefe774a29. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB331662609.