H. J. Mayfield
type: MusicGroup
popularity: 10
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d6c43cc7b9885ec127351c71972a32b6abb7cd1596cd5568d508c61fd888a5b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/75c0a892-bea0-4486-bbc2-cfced1acd619.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/75c0a892-bea0-4486-bbc2-cfced1acd619.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/75c0a892-bea0-4486-bbc2-cfced1acd619
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1d6c43cc7b9885ec127351c71972a32b6abb7cd1596cd5568d508c61fd888a5b","name":"H. J. Mayfield","registered_at":"2026-06-17T06:34:42Z","symbol":"NIM1311255","token_address":"0xe2c8b700de0435564987a5bff79eb3a3a67a9759","type":"artist","uuid":"75c0a892-bea0-4486-bbc2-cfced1acd619"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6c43cc7b9885ec127351c71972a32b6abb7cd1596cd5568d508c61fd888a5b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75c0a892-bea0-4486-bbc2-cfced1acd619.json and https://artists.proofprofile.net/proofs/artist/75c0a892-bea0-4486-bbc2-cfced1acd619.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x1d6c43cc7b9885ec127351c71972a32b6abb7cd1596cd5568d508c61fd888a5b","name":"H. J. Mayfield","registered_at":"2026-06-17T06:34:42Z","symbol":"NIM1311255","token_address":"0xe2c8b700de0435564987a5bff79eb3a3a67a9759","type":"artist","uuid":"75c0a892-bea0-4486-bbc2-cfced1acd619"}
album: Der trotzige Fuchs (Historische Fantasy Novelle)
  type: MusicAlbum
  date published: 2020-08-02
album: Der rasende Sperber (Historische Fantasy Novelle)
  type: MusicAlbum
  date published: 2020-10-13
album: Der geflügelte Dolch (Historische Fantasy Novelle)
  type: MusicAlbum
  date published: 2021-01-22