John Bence may refer to: John Bence (1622–1688), English merchant and politician, John Bence (1670–1718), English politician, MP for Ipswich, and for Dunwich John Bence (1581–1635), MP for Aldebur
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 0x611e7aac1e6acd066c7f2bc6a68fd280e5d856bb50bca8ee4ca33a3e25106d82. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/405aaed5-7904-4908-b793-3086e2c18e77.json and https://artists.proofprofile.net/proofs/artist/405aaed5-7904-4908-b793-3086e2c18e77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).