George Raymond Richard Martin (born George Raymond Martin; September 20, 1948), also known by the initials G.R.R.M., is an American author, screenwriter, and television producer. Martin is best known
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 0xaa4987c4f4e38aaed1ae0407f5215d1ec3b1d7c19e94ced8c23bd6a2582e52fb. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77b77a15-bf7c-4dae-85a3-956a4e2bda64.json and https://artists.proofprofile.net/proofs/artist/77b77a15-bf7c-4dae-85a3-956a4e2bda64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wild Cards - Die erste Generation, Band 1: Vier Asse