Nathan Green may refer to: Nathan "Nearest" Green (1820–?), emancipated slave and whiskey distiller Nathan Green Sr. (1792–1866), justice of the Tennessee Supreme Court Nathan Green Jr. (1827–1919),
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 0xea91e494b7249050876e4f51e231310d4eafb6f893b33777cb6be747cbf46edf. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcb3ea0c-4347-4c80-b93e-18ae179ad9de.json and https://artists.proofprofile.net/proofs/artist/fcb3ea0c-4347-4c80-b93e-18ae179ad9de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).