Francesco Varchetta
type: MusicGroup
genre: nu jazz
popularity: 2
followers: 174
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad349ac475a25901b4f6100bc4417a19de5173b94838d618ce664d21e81eac45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/661fc2f7-f6e9-4bd2-892e-81373a6126cf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/661fc2f7-f6e9-4bd2-892e-81373a6126cf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/661fc2f7-f6e9-4bd2-892e-81373a6126cf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad349ac475a25901b4f6100bc4417a19de5173b94838d618ce664d21e81eac45","name":"Francesco Varchetta","registered_at":"2026-06-17T01:13:37Z","symbol":"NIM1234614","token_address":"0xbe99cab3ecca7d4cc5a42311e3c1b8c07e1ec185","type":"artist","uuid":"661fc2f7-f6e9-4bd2-892e-81373a6126cf"}
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 0xad349ac475a25901b4f6100bc4417a19de5173b94838d618ce664d21e81eac45. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/661fc2f7-f6e9-4bd2-892e-81373a6126cf.json and https://artists.proofprofile.net/proofs/artist/661fc2f7-f6e9-4bd2-892e-81373a6126cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xad349ac475a25901b4f6100bc4417a19de5173b94838d618ce664d21e81eac45","name":"Francesco Varchetta","registered_at":"2026-06-17T01:13:37Z","symbol":"NIM1234614","token_address":"0xbe99cab3ecca7d4cc5a42311e3c1b8c07e1ec185","type":"artist","uuid":"661fc2f7-f6e9-4bd2-892e-81373a6126cf"}
album: Black Narcissus
  type: MusicAlbum
  date published: 2021-01-18
album: Tuning Line
  type: MusicAlbum
  date published: 2021-03-19
album: Typewriter
  type: MusicAlbum
  date published: 2021-06-03
album: A Different Day
  type: MusicAlbum
  date published: 2021-07-08
album: Rewind the Tape
  type: MusicAlbum
  date published: 2022-04-06