240px|thumb|Baker during his tenure with the Colorado Rockies in 2008 Jeffrey Glen Baker (born June 21, 1981) is an American former professional baseball player. He bats and throws right-handed. He pl
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 0xdd9aa631141d1931e9374042363920dd26b9428d90107a7734a01b9cb648f267. Chain 2 (Bitcoin): anchored in block 953982 (2026-06-16T17:42:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d08a3d0-82a3-4451-8d2f-dbd43119e8e7.json and https://artists.proofprofile.net/proofs/artist/2d08a3d0-82a3-4451-8d2f-dbd43119e8e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).