Roland Pembroke Hanna (February 10, 1932 – November 13, 2002) was an American jazz pianist, composer, and teacher. Biography Hanna studied classical piano from the age of 11, but was strongly interes
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 0xbca2c7543d4b908dd418c8fb2e687f235d8b265b8c4d77edd5f314abd2712c28. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/596f0f58-908c-469b-a833-8a53ba109957.json and https://artists.proofprofile.net/proofs/artist/596f0f58-908c-469b-a833-8a53ba109957.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roland Hanna Play Harold Rome's 'Destry Rides Again'
Bird Tracks - Remembering Charlie Parker
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 0x82590f2b717404c600f8b6c8f89b440221a043055310a4fd71b454103ab5a41b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:06Z), 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/USMU10821240.
Tributaries - Reflections on Tommy Flanagan
Impressions (The Definitive Black & Blue Sessions) [Nice & Brignoles, France 1978-1979]
Roland Hanna Plays the Music of Alec Wilder