Robin Hood is a legendary heroic outlaw originally depicted in English folklore and subsequently featured in literature, theatre, and cinema. According to legend, he was a highly skilled archer and sw
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8000bd58739fe1fdce597a192aa920257cef2c99479393e2581515ea397dca. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5b57d52-e9e5-4686-9444-e65b64ed5be8.json and https://artists.proofprofile.net/proofs/artist/c5b57d52-e9e5-4686-9444-e65b64ed5be8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).