The London Flute and Harp Duo
type: MusicGroup
popularity: 5
followers: 86
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x57b100678851f7331784a64c3910084ffbdce3ef6432755c57e58e572773268c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954013
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954013
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/348c2c7d-4bf0-4c72-abfd-271ed5c17b06.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/348c2c7d-4bf0-4c72-abfd-271ed5c17b06.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/348c2c7d-4bf0-4c72-abfd-271ed5c17b06
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:27:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x57b100678851f7331784a64c3910084ffbdce3ef6432755c57e58e572773268c","name":"The London Flute and Harp Duo","registered_at":"2026-06-16T07:49:50Z","symbol":"NIM0985587","token_address":"0x5d1c19f7809088e5a4dee4ec8d25c80c578657c0","type":"artist","uuid":"348c2c7d-4bf0-4c72-abfd-271ed5c17b06"}
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 0x57b100678851f7331784a64c3910084ffbdce3ef6432755c57e58e572773268c. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/348c2c7d-4bf0-4c72-abfd-271ed5c17b06.json and https://artists.proofprofile.net/proofs/artist/348c2c7d-4bf0-4c72-abfd-271ed5c17b06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:27:01Z
  text: {"copyright_id":"0x57b100678851f7331784a64c3910084ffbdce3ef6432755c57e58e572773268c","name":"The London Flute and Harp Duo","registered_at":"2026-06-16T07:49:50Z","symbol":"NIM0985587","token_address":"0x5d1c19f7809088e5a4dee4ec8d25c80c578657c0","type":"artist","uuid":"348c2c7d-4bf0-4c72-abfd-271ed5c17b06"}
album: Solitude and Prayer
  type: MusicAlbum
  date published: 2015-11-10