Nick Chopper, the Tin Woodman or the Tin Man, is a character in the fictional Land of Oz created by American author L. Frank Baum. He first appeared in his 1900 book The Wonderful Wizard of Oz and rea
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 0x050532adca498534353ab78f77e953799aa5344fdc6a8d9287e1324a5bd82090. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22599d28-a663-4f8c-b807-2744e26a4a9f.json and https://artists.proofprofile.net/proofs/artist/22599d28-a663-4f8c-b807-2744e26a4a9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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