Ian Hendrickson-Smith (born February 10, 1974) is an American jazz saxophonist. He is best known for being a former member of Sharon Jones & the Dap-Kings from 2004 to 2010 and playing with The Roots
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 0x16333df13ce185e8921f98d965a302e3c146a210adf9879669403cb52299bb7c. 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/73db4a50-2a02-4840-afc5-069de141a887.json and https://artists.proofprofile.net/proofs/artist/73db4a50-2a02-4840-afc5-069de141a887.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).