John Winston Ono Lennon (born John Winston Lennon; 9 October 19408 December 1980) was an English musician and activist. He gained global fame as the founder, co-lead vocalist and rhythm guitarist of t
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 0xf7b4cabc99c8b80e4069a5ba7f52640a5dbfdc948dfe2b66234ca78bf630b445. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bed5d2f-c037-4c54-866b-fb9d84fe7e03.json and https://artists.proofprofile.net/proofs/artist/3bed5d2f-c037-4c54-866b-fb9d84fe7e03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).