Johan Harlaar
type: MusicGroup
popularity: 5
followers: 333
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6e8752c8691f64a40bd64a099ffef885a08fc0b5f7fb99521bc8a77c60654d3c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05d10b14-e511-41c4-b46a-a83bec1bb963.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05d10b14-e511-41c4-b46a-a83bec1bb963.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05d10b14-e511-41c4-b46a-a83bec1bb963
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6e8752c8691f64a40bd64a099ffef885a08fc0b5f7fb99521bc8a77c60654d3c","name":"Johan Harlaar","registered_at":"2026-06-15T15:38:48Z","symbol":"NIM0753779","token_address":"0x1a62964218275c3beaa840fffd9cf90b02142b89","type":"artist","uuid":"05d10b14-e511-41c4-b46a-a83bec1bb963"}
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 0x6e8752c8691f64a40bd64a099ffef885a08fc0b5f7fb99521bc8a77c60654d3c. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05d10b14-e511-41c4-b46a-a83bec1bb963.json and https://artists.proofprofile.net/proofs/artist/05d10b14-e511-41c4-b46a-a83bec1bb963.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0x6e8752c8691f64a40bd64a099ffef885a08fc0b5f7fb99521bc8a77c60654d3c","name":"Johan Harlaar","registered_at":"2026-06-15T15:38:48Z","symbol":"NIM0753779","token_address":"0x1a62964218275c3beaa840fffd9cf90b02142b89","type":"artist","uuid":"05d10b14-e511-41c4-b46a-a83bec1bb963"}
album: Ayahuasca Icaros in Authentic Shipibo
  type: MusicAlbum
  date published: 2016-05-01