John Lesaca
type: MusicGroup
genre: kundiman
popularity: 7
followers: 451
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a1087aabe5f803f670e147abbfd95a47d8e6ba5d2a59d16d3c038638d5825a7
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/5a2015b9-3843-4801-b379-b2b4e70df9cd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a2015b9-3843-4801-b379-b2b4e70df9cd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a2015b9-3843-4801-b379-b2b4e70df9cd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3a1087aabe5f803f670e147abbfd95a47d8e6ba5d2a59d16d3c038638d5825a7","name":"John Lesaca","registered_at":"2026-06-16T20:59:44Z","symbol":"NIM1174064","token_address":"0x68eff99563db7c73b6e460c8c27b4af48c272e81","type":"artist","uuid":"5a2015b9-3843-4801-b379-b2b4e70df9cd"}
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 0x3a1087aabe5f803f670e147abbfd95a47d8e6ba5d2a59d16d3c038638d5825a7. 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/5a2015b9-3843-4801-b379-b2b4e70df9cd.json and https://artists.proofprofile.net/proofs/artist/5a2015b9-3843-4801-b379-b2b4e70df9cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3a1087aabe5f803f670e147abbfd95a47d8e6ba5d2a59d16d3c038638d5825a7","name":"John Lesaca","registered_at":"2026-06-16T20:59:44Z","symbol":"NIM1174064","token_address":"0x68eff99563db7c73b6e460c8c27b4af48c272e81","type":"artist","uuid":"5a2015b9-3843-4801-b379-b2b4e70df9cd"}
album: Fiddler On The Loose
  type: MusicAlbum
  date published: 1991
album: Fiddler on the Loose
  type: MusicAlbum
  date published: 1991
album: First Fiddle
  type: MusicAlbum
  date published: 1993
album: Master Fiddler
  type: MusicAlbum
  date published: 2008
album: First Fiddle
  type: MusicAlbum
  date published: 2008
  track: Somewhere In Time
    type: MusicRecording
    duration: PT3M15S
    duration ms: 195333
    explicit: false
    by artist: John Lesaca
    in album: First Fiddle
      type: MusicAlbum
      date published: 2008
    genre: kundiman
    isrc code: PHI010201178
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T11:19:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x45307507eecdc70169f681cd89ffefc3ca0f9973c00ac4f67a7d0fd4c73c0a53
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHI010201178
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x45307507eecdc70169f681cd89ffefc3ca0f9973c00ac4f67a7d0fd4c73c0a53. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHI010201178.
      date published: 2026-07-05T18:48:28Z
    audio: Somewhere In Time
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 158.125
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.176
      additional property: Energy
        type: PropertyValue
        value: 0.159
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.938
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.181
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.172
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.104
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Master Fiddler
  type: MusicAlbum
  date published: 2008
album: The Legends Series: John Lesaca Greatest Hits
  type: MusicAlbum
  date published: 2008-02-02
album: Master Fiddler
  type: MusicAlbum
  date published: 2008-02-04
album: The Legends Series: John Lesaca Greatest Hits
  type: MusicAlbum
  date published: 2015-07-31
album: Fiddler On The Loose
  type: MusicAlbum
  date published: 2015-07-31
album: The Legends Series: John Lesaca Greatest Hits
  type: MusicAlbum
  date published: 2015-07-31