William Sheehan (born March 19, 1953) is an American musician known for playing bass guitar with acts such as Talas, Steve Vai, David Lee Roth, Mr. Big, Niacin, and The Winery Dogs. He is also known f
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 0x0717c30d11e0bc0f5a479c0fff4e5ea639a9518c04aacfba361b5b552b62996b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c676b52-069d-493f-9c5f-9469cfa0c95e.json and https://artists.proofprofile.net/proofs/artist/7c676b52-069d-493f-9c5f-9469cfa0c95e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).