The English surname Percy is of Norman origin, coming from Normandy to England, United Kingdom. It was from the House of Percy, Norman lords of Northumberland, and derives from the village of Percy-e
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 0xe1ce51ec72f7f3d1a5e318bbae64aa82ad6bd9be34844f762362d730133da352. 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/69f7572a-9398-4e7a-be93-1531b2f0b9f7.json and https://artists.proofprofile.net/proofs/artist/69f7572a-9398-4e7a-be93-1531b2f0b9f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).