Christopher Anthony John Martin (born 2 March 1977) is an English singer, songwriter, musician and producer. He is best known as the vocalist, pianist and co-founder of the rock band Coldplay. Born i
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 0x7f1244895bcbc51516dc3a7f46fb48c7a5a7e8652d9272859cdda7ee68127966. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/995739f6-57e2-4386-910a-cb9e1e2b02c1.json and https://artists.proofprofile.net/proofs/artist/995739f6-57e2-4386-910a-cb9e1e2b02c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).