Jack Wood can refer to: Jack Wood (referee) (1872–1921), English footballer and referee Leo Wood (1882–1929), American songwriter sometimes known as Jack Wood Jack Wood (footballer) (1889–1914), A
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 0x4bddcf9d3894810d87b374fec8827543d4db5c09ca50a4fc7b98605986b371da. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ad5ad28-a5a5-46c7-b03a-527f6ead8eb5.json and https://artists.proofprofile.net/proofs/artist/8ad5ad28-a5a5-46c7-b03a-527f6ead8eb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).