Marmaduke Sanchez
type: MusicGroup
popularity: 10
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x97667142384269e124010bb07d38fa7a1b799437cf4894bc0cac60ff9f7e3027
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1983abad-6ad2-4ba1-b73a-3f4255fb821a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1983abad-6ad2-4ba1-b73a-3f4255fb821a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1983abad-6ad2-4ba1-b73a-3f4255fb821a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x97667142384269e124010bb07d38fa7a1b799437cf4894bc0cac60ff9f7e3027","name":"Marmaduke Sanchez","registered_at":"2026-06-15T22:19:20Z","symbol":"NIM0849332","token_address":"0x9e4aec0cc65edf54123cc5e71df4c763c082fc91","type":"artist","uuid":"1983abad-6ad2-4ba1-b73a-3f4255fb821a"}
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 0x97667142384269e124010bb07d38fa7a1b799437cf4894bc0cac60ff9f7e3027. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1983abad-6ad2-4ba1-b73a-3f4255fb821a.json and https://artists.proofprofile.net/proofs/artist/1983abad-6ad2-4ba1-b73a-3f4255fb821a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x97667142384269e124010bb07d38fa7a1b799437cf4894bc0cac60ff9f7e3027","name":"Marmaduke Sanchez","registered_at":"2026-06-15T22:19:20Z","symbol":"NIM0849332","token_address":"0x9e4aec0cc65edf54123cc5e71df4c763c082fc91","type":"artist","uuid":"1983abad-6ad2-4ba1-b73a-3f4255fb821a"}
album: Ja55 Blast
  type: MusicAlbum
  date published: 2018-10-18
album: Total B33fcall
  type: MusicAlbum
  date published: 2018-10-25
album: Toilet Dinner Mu5ic
  type: MusicAlbum
  date published: 2018-11-08