Franz Joseph Hadyn
type: MusicGroup
popularity: 2
followers: 311
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x910dd1ad0fefdb89aa66e9f1915abfcf1f91395e95b74f7f5167294fe3681478
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d8b27e25-24b5-47c5-a724-a92cf94aac75.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d8b27e25-24b5-47c5-a724-a92cf94aac75.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d8b27e25-24b5-47c5-a724-a92cf94aac75
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x910dd1ad0fefdb89aa66e9f1915abfcf1f91395e95b74f7f5167294fe3681478","name":"Franz Joseph Hadyn","registered_at":"2026-06-21T03:32:13Z","symbol":"NIM1806971","token_address":"0x9c94cbef06d87556b2e2d4f91df209a2aec3c78a","type":"artist","uuid":"d8b27e25-24b5-47c5-a724-a92cf94aac75"}
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 0x910dd1ad0fefdb89aa66e9f1915abfcf1f91395e95b74f7f5167294fe3681478. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8b27e25-24b5-47c5-a724-a92cf94aac75.json and https://artists.proofprofile.net/proofs/artist/d8b27e25-24b5-47c5-a724-a92cf94aac75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0x910dd1ad0fefdb89aa66e9f1915abfcf1f91395e95b74f7f5167294fe3681478","name":"Franz Joseph Hadyn","registered_at":"2026-06-21T03:32:13Z","symbol":"NIM1806971","token_address":"0x9c94cbef06d87556b2e2d4f91df209a2aec3c78a","type":"artist","uuid":"d8b27e25-24b5-47c5-a724-a92cf94aac75"}
album: Hadyn: 5 Variations in D major, Hob. XVII:7
  type: MusicAlbum
  date published: 2020-02-01
album: Piano Sonata No. 1 in C Major, Hob. XVI: 8
  type: MusicAlbum
  date published: 2020-02-18
album: Piano Sonata No. 2 in C Major, Hob. XVI: 7
  type: MusicAlbum
  date published: 2020-03-09
album: Piano Sonata No. 3 in F Major, Hob. XVI: 9
  type: MusicAlbum
  date published: 2020-03-16
album: Hadyn: 6 Variations in C major, Hob. XVII: 5
  type: MusicAlbum
  date published: 2020-04-08
album: Piano Sonata No. 50 in D Major, Hob. XVI:37 (I. Allegro con brio)
  type: MusicAlbum
  date published: 2025-08-14