George R. R. Martin
type: MusicGroup
description: 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
popularity: 20
followers: 2853
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa4987c4f4e38aaed1ae0407f5215d1ec3b1d7c19e94ced8c23bd6a2582e52fb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/77b77a15-bf7c-4dae-85a3-956a4e2bda64.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/77b77a15-bf7c-4dae-85a3-956a4e2bda64.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/77b77a15-bf7c-4dae-85a3-956a4e2bda64
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaa4987c4f4e38aaed1ae0407f5215d1ec3b1d7c19e94ced8c23bd6a2582e52fb","name":"George R. R. Martin","registered_at":"2026-06-14T16:58:35Z","symbol":"NIM0517481","token_address":"0xb1b816c2e21d9fe469577db462465a888dd8957e","type":"artist","uuid":"77b77a15-bf7c-4dae-85a3-956a4e2bda64"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: 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).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xaa4987c4f4e38aaed1ae0407f5215d1ec3b1d7c19e94ced8c23bd6a2582e52fb","name":"George R. R. Martin","registered_at":"2026-06-14T16:58:35Z","symbol":"NIM0517481","token_address":"0xb1b816c2e21d9fe469577db462465a888dd8957e","type":"artist","uuid":"77b77a15-bf7c-4dae-85a3-956a4e2bda64"}
album: Wild Cards - Die erste Generation, Band 1: Vier Asse
  type: MusicAlbum
  date published: 2016-06-27
album: Wild Cards - Die erste Generation, Band 1: Vier Asse
  type: MusicAlbum
  date published: 2016-06-27