Katherine F Martin
type: MusicGroup
popularity: 2
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c540b4d79277647d522518887498c4777483356c63c633741f4f713c2346b29
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b61dcf0d-9020-4e4c-8813-0bb01f1bd95a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b61dcf0d-9020-4e4c-8813-0bb01f1bd95a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b61dcf0d-9020-4e4c-8813-0bb01f1bd95a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7c540b4d79277647d522518887498c4777483356c63c633741f4f713c2346b29","name":"Katherine F Martin","registered_at":"2026-06-20T14:49:57Z","symbol":"NIM1634756","token_address":"0x1d589cf8f038d90fc9ed4c8ea25afcec1c09ec24","type":"artist","uuid":"b61dcf0d-9020-4e4c-8813-0bb01f1bd95a"}
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 0x7c540b4d79277647d522518887498c4777483356c63c633741f4f713c2346b29. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b61dcf0d-9020-4e4c-8813-0bb01f1bd95a.json and https://artists.proofprofile.net/proofs/artist/b61dcf0d-9020-4e4c-8813-0bb01f1bd95a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0x7c540b4d79277647d522518887498c4777483356c63c633741f4f713c2346b29","name":"Katherine F Martin","registered_at":"2026-06-20T14:49:57Z","symbol":"NIM1634756","token_address":"0x1d589cf8f038d90fc9ed4c8ea25afcec1c09ec24","type":"artist","uuid":"b61dcf0d-9020-4e4c-8813-0bb01f1bd95a"}
album: Inspire 4
  type: MusicAlbum
  date published: 2019-12-03
album: In Theory
  type: MusicAlbum
  date published: 2020-03-18