Piano Libre
type: MusicGroup
popularity: 3
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x923dec6a39c46696b6a5f80933ff880e76dd58af15d3801fc0b8cecb6cd27592
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d323e8d6-f33f-48f0-9e0e-86dc78e7003c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d323e8d6-f33f-48f0-9e0e-86dc78e7003c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d323e8d6-f33f-48f0-9e0e-86dc78e7003c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x923dec6a39c46696b6a5f80933ff880e76dd58af15d3801fc0b8cecb6cd27592","name":"Piano Libre","registered_at":"2026-06-21T02:00:20Z","symbol":"NIM1781480","token_address":"0x295dc4c7c5d069888b9fdcc9651802ac02d578a7","type":"artist","uuid":"d323e8d6-f33f-48f0-9e0e-86dc78e7003c"}
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 0x923dec6a39c46696b6a5f80933ff880e76dd58af15d3801fc0b8cecb6cd27592. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d323e8d6-f33f-48f0-9e0e-86dc78e7003c.json and https://artists.proofprofile.net/proofs/artist/d323e8d6-f33f-48f0-9e0e-86dc78e7003c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x923dec6a39c46696b6a5f80933ff880e76dd58af15d3801fc0b8cecb6cd27592","name":"Piano Libre","registered_at":"2026-06-21T02:00:20Z","symbol":"NIM1781480","token_address":"0x295dc4c7c5d069888b9fdcc9651802ac02d578a7","type":"artist","uuid":"d323e8d6-f33f-48f0-9e0e-86dc78e7003c"}
album: Calm Piano Hits, Vol. 1
  type: MusicAlbum
  date published: 2021-05-28
album: Calm Piano Hits, Vol. 1
  type: MusicAlbum
  date published: 2021-05-28
album: Hits for Relaxation
  type: MusicAlbum
  date published: 2022-06-10
album: Hits for Relaxation, Vol. 2
  type: MusicAlbum
  date published: 2023-07-14
album: Calm Piano Hits Vol. 3
  type: MusicAlbum
  date published: 2025-06-27
album: Hits for Relaxation, Vol. 3
  type: MusicAlbum
  date published: 2025-08-01