Danny van der Horst
type: MusicGroup
popularity: 2
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffa240135846875442b820c896d8b017dcd821f70ed63a26b2ad60fd2278a7ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953889
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:57:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xffa240135846875442b820c896d8b017dcd821f70ed63a26b2ad60fd2278a7ae","name":"Danny van der Horst","registered_at":"2026-06-15T18:22:54Z","symbol":"NIM0792952","token_address":"0xc697fff54d2f35be5eb4c68826765739bb28b1d9","type":"artist","uuid":"0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2"}
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 0xffa240135846875442b820c896d8b017dcd821f70ed63a26b2ad60fd2278a7ae. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2.json and https://artists.proofprofile.net/proofs/artist/0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:57:45Z
  text: {"copyright_id":"0xffa240135846875442b820c896d8b017dcd821f70ed63a26b2ad60fd2278a7ae","name":"Danny van der Horst","registered_at":"2026-06-15T18:22:54Z","symbol":"NIM0792952","token_address":"0xc697fff54d2f35be5eb4c68826765739bb28b1d9","type":"artist","uuid":"0df2a2b7-d5da-41ad-8d19-f1433b0e2ac2"}