Holt Blackheath
type: MusicGroup
genre: g-house
popularity: 2
followers: 406
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3577d56c3155bed210158e962139c1a397436ed25b71811c0eb336df0657dc71
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/165efe4d-26d9-4e37-a2ca-463ee945aef3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/165efe4d-26d9-4e37-a2ca-463ee945aef3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/165efe4d-26d9-4e37-a2ca-463ee945aef3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3577d56c3155bed210158e962139c1a397436ed25b71811c0eb336df0657dc71","name":"Holt Blackheath","registered_at":"2026-06-15T21:35:20Z","symbol":"NIM0838849","token_address":"0x869179e24ab837f7d20b623c732bd09ed6715350","type":"artist","uuid":"165efe4d-26d9-4e37-a2ca-463ee945aef3"}
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 0x3577d56c3155bed210158e962139c1a397436ed25b71811c0eb336df0657dc71. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/165efe4d-26d9-4e37-a2ca-463ee945aef3.json and https://artists.proofprofile.net/proofs/artist/165efe4d-26d9-4e37-a2ca-463ee945aef3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x3577d56c3155bed210158e962139c1a397436ed25b71811c0eb336df0657dc71","name":"Holt Blackheath","registered_at":"2026-06-15T21:35:20Z","symbol":"NIM0838849","token_address":"0x869179e24ab837f7d20b623c732bd09ed6715350","type":"artist","uuid":"165efe4d-26d9-4e37-a2ca-463ee945aef3"}
album: Don't Cry
  type: MusicAlbum
  date published: 2014-06-02
album: The Black EP
  type: MusicAlbum
  date published: 2014-07-28
album: Paradox EP
  type: MusicAlbum
  date published: 2016-10-03
album: Kick Back
  type: MusicAlbum
  date published: 2017-05-16
album: Up All Night EP
  type: MusicAlbum
  date published: 2018-03-09