Xaver Varnus
type: MusicGroup
popularity: 8
followers: 1253
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a6c8542e165c9b3b73705f1dc4c253cc2c77e0c971b8ed0131bf1dd79c617c8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f08ee9c0-33c8-4d59-9e9b-83f25c0395a7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f08ee9c0-33c8-4d59-9e9b-83f25c0395a7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f08ee9c0-33c8-4d59-9e9b-83f25c0395a7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4a6c8542e165c9b3b73705f1dc4c253cc2c77e0c971b8ed0131bf1dd79c617c8","name":"Xaver Varnus","registered_at":"2026-06-21T13:06:56Z","symbol":"NIM1927344","token_address":"0x677182bf3a8f1ad987bda6322fb54a61ce20c93c","type":"artist","uuid":"f08ee9c0-33c8-4d59-9e9b-83f25c0395a7"}
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 0x4a6c8542e165c9b3b73705f1dc4c253cc2c77e0c971b8ed0131bf1dd79c617c8. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f08ee9c0-33c8-4d59-9e9b-83f25c0395a7.json and https://artists.proofprofile.net/proofs/artist/f08ee9c0-33c8-4d59-9e9b-83f25c0395a7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x4a6c8542e165c9b3b73705f1dc4c253cc2c77e0c971b8ed0131bf1dd79c617c8","name":"Xaver Varnus","registered_at":"2026-06-21T13:06:56Z","symbol":"NIM1927344","token_address":"0x677182bf3a8f1ad987bda6322fb54a61ce20c93c","type":"artist","uuid":"f08ee9c0-33c8-4d59-9e9b-83f25c0395a7"}
album: Xaver Varnus Plays Famous Pipe Organs Around the World 1.
  type: MusicAlbum
  date published: 2019-11-14
album: Xaver Varnus Plays Carmina Burana
  type: MusicAlbum
  date published: 2019-11-14
album: Xaver Varnus Plays Great Organ Works
  type: MusicAlbum
  date published: 2019-12-30