Luchtmachtkoor, Hilversum
type: MusicGroup
genre: nederpop
popularity: 9
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x452fa5ec25e4e1dabfda3158c2d24b615b0f421322207db8a212a31113d7ad7f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a04ba25c-bb9e-49b6-9fed-33751c47f432.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a04ba25c-bb9e-49b6-9fed-33751c47f432.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a04ba25c-bb9e-49b6-9fed-33751c47f432
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x452fa5ec25e4e1dabfda3158c2d24b615b0f421322207db8a212a31113d7ad7f","name":"Luchtmachtkoor, Hilversum","registered_at":"2026-06-20T05:47:45Z","symbol":"NIM1529841","token_address":"0x09c093663178ab25010690efe3ee3fa4dd348bf8","type":"artist","uuid":"a04ba25c-bb9e-49b6-9fed-33751c47f432"}
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 0x452fa5ec25e4e1dabfda3158c2d24b615b0f421322207db8a212a31113d7ad7f. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a04ba25c-bb9e-49b6-9fed-33751c47f432.json and https://artists.proofprofile.net/proofs/artist/a04ba25c-bb9e-49b6-9fed-33751c47f432.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x452fa5ec25e4e1dabfda3158c2d24b615b0f421322207db8a212a31113d7ad7f","name":"Luchtmachtkoor, Hilversum","registered_at":"2026-06-20T05:47:45Z","symbol":"NIM1529841","token_address":"0x09c093663178ab25010690efe3ee3fa4dd348bf8","type":"artist","uuid":"a04ba25c-bb9e-49b6-9fed-33751c47f432"}