Kevin Hader
type: MusicGroup
genre: acid techno
genre: hard techno
genre: techno
popularity: 3
followers: 1011
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc479be84129b35ee5f1ce8a0412fd239f5da112fa5c8fc1f9407e909abe1a680
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc479be84129b35ee5f1ce8a0412fd239f5da112fa5c8fc1f9407e909abe1a680","name":"Kevin Hader","registered_at":"2026-06-21T16:29:21Z","symbol":"NIM1973726","token_address":"0x6d3c235ab83407153e85ef0e1a220246275df643","type":"artist","uuid":"f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b"}
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 0xc479be84129b35ee5f1ce8a0412fd239f5da112fa5c8fc1f9407e909abe1a680. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b.json and https://artists.proofprofile.net/proofs/artist/f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xc479be84129b35ee5f1ce8a0412fd239f5da112fa5c8fc1f9407e909abe1a680","name":"Kevin Hader","registered_at":"2026-06-21T16:29:21Z","symbol":"NIM1973726","token_address":"0x6d3c235ab83407153e85ef0e1a220246275df643","type":"artist","uuid":"f9ba14f0-dadf-4523-8ab9-d7f3836b7d7b"}
album: Prometheus
  type: MusicAlbum
  date published: 2016-06-10
album: Audio
  type: MusicAlbum
  date published: 2017-11-24
album: Audio
  type: MusicAlbum
  date published: 2017-11-24