Dena Piano Duo
type: MusicGroup
popularity: 5
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x49f490087f1476d53aee33778bfc0b90b8ebb5bfdd59a21ac09fd3ec122770fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7665173-f367-49ba-aff0-2278c35fbf0b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7665173-f367-49ba-aff0-2278c35fbf0b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b7665173-f367-49ba-aff0-2278c35fbf0b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x49f490087f1476d53aee33778bfc0b90b8ebb5bfdd59a21ac09fd3ec122770fc","name":"Dena Piano Duo","registered_at":"2026-06-20T15:31:11Z","symbol":"NIM1641787","token_address":"0xe49aebed0951a5214009d1f6861d0fc37f0db9f6","type":"artist","uuid":"b7665173-f367-49ba-aff0-2278c35fbf0b"}
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 0x49f490087f1476d53aee33778bfc0b90b8ebb5bfdd59a21ac09fd3ec122770fc. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7665173-f367-49ba-aff0-2278c35fbf0b.json and https://artists.proofprofile.net/proofs/artist/b7665173-f367-49ba-aff0-2278c35fbf0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x49f490087f1476d53aee33778bfc0b90b8ebb5bfdd59a21ac09fd3ec122770fc","name":"Dena Piano Duo","registered_at":"2026-06-20T15:31:11Z","symbol":"NIM1641787","token_address":"0xe49aebed0951a5214009d1f6861d0fc37f0db9f6","type":"artist","uuid":"b7665173-f367-49ba-aff0-2278c35fbf0b"}
album: Hommage À Grieg Vol. III
  type: MusicAlbum
  date published: 2013-02-16