Big Jay is a mountain in the northern Green Mountains of Vermont, located on the border of Franklin and Orleans counties. The summit of Big Jay is the highest point of Franklin County. Big Jay is 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 0x986a5dee10461012092b8e4fe7885f5ff3747b88f759bd37fdc49b05fca28ecd. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62d1d7c8-9589-4739-a7e0-8f73fd4240e5.json and https://artists.proofprofile.net/proofs/artist/62d1d7c8-9589-4739-a7e0-8f73fd4240e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).