Pietro Metastasio
type: MusicGroup
genre: chamber music
description: Pietro Antonio Domenico Trapassi (3 January 1698 – 12 April 1782), better known by his pseudonym of Pietro Metastasio (), was an Italian poet and librettist, considered the most important writer of op
popularity: 2
followers: 216
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6547d4b6723b69d038501cfafbe91159fa544320270bea6a4046dde546f364de
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8b41861-9df6-49e0-b129-13db59a378fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8b41861-9df6-49e0-b129-13db59a378fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a8b41861-9df6-49e0-b129-13db59a378fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6547d4b6723b69d038501cfafbe91159fa544320270bea6a4046dde546f364de","name":"Pietro Metastasio","registered_at":"2026-06-20T08:35:15Z","symbol":"NIM1567446","token_address":"0x15a805d7695bc12358e10d9abaea777ec2a76035","type":"artist","uuid":"a8b41861-9df6-49e0-b129-13db59a378fd"}
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 0x6547d4b6723b69d038501cfafbe91159fa544320270bea6a4046dde546f364de. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8b41861-9df6-49e0-b129-13db59a378fd.json and https://artists.proofprofile.net/proofs/artist/a8b41861-9df6-49e0-b129-13db59a378fd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x6547d4b6723b69d038501cfafbe91159fa544320270bea6a4046dde546f364de","name":"Pietro Metastasio","registered_at":"2026-06-20T08:35:15Z","symbol":"NIM1567446","token_address":"0x15a805d7695bc12358e10d9abaea777ec2a76035","type":"artist","uuid":"a8b41861-9df6-49e0-b129-13db59a378fd"}
track: Il sogno di Scipione, K.126: Lieve sono al par del vento
  type: MusicRecording
  duration: PT6M50S
  duration ms: 410720
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Pietro Metastasio
  by artist: Emma Matthews
  by artist: Marko Letonja
  by artist: Tasmanian Symphony Orchestra
  in album: Mozart: Arias
    type: MusicAlbum
    date published: 2014-02-07
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: AUAB01450004
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T00:45:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xecf2d72bfb57a812ab9277ab698cc8723ecd70814736db9b18d8129e69b45e25
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960334
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960334
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB01450004
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T02:19:15Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xecf2d72bfb57a812ab9277ab698cc8723ecd70814736db9b18d8129e69b45e25. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB01450004 — a six-check JSON result.
    date published: 2026-07-31T02:19:15Z
  audio: Il sogno di Scipione, K.126: Lieve sono al par del vento
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 133.598
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.472
    additional property: Energy
      type: PropertyValue
      value: 0.161
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.978
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.177
    additional property: Liveness
      type: PropertyValue
      value: 0.072
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.209
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.147
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major