thumb|Dana Williams, hitting coach for the Wisconsin Timber Rattlers, in Lansing, Michigan in 2007 Dana Williams may refer to: Dana Williams (baseball) (born 1963), American baseball player Dana Wil
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 0xa6fd87c3337306966b0cb66c81484e6cd9e36e65cc84ffac1a2f484df8bf77d7. 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/5cfcfba6-f6c2-487c-a5f4-a92207ebce33.json and https://artists.proofprofile.net/proofs/artist/5cfcfba6-f6c2-487c-a5f4-a92207ebce33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).