thumb|Dave Bass w/ Phil Woods (2015) David Ira Bass (born June 21, 1950) is an American jazz pianist, composer, arranger, and lyricist who has released eight albums: Gone (2010), NYC Sessions (2015),
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a060eb5e813ea55dee09731a86e92cafbb869b90077e6694d1da28977798780. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70f7eea2-be0a-4912-9935-54d47b4af678.json and https://artists.proofprofile.net/proofs/artist/70f7eea2-be0a-4912-9935-54d47b4af678.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).