Ernesto Ferreyra
type: MusicGroup
genre: minimal techno
popularity: 4
followers: 1306
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x517dab54164bd496ef25feaa693d64aaf5a61b3355fdaff1a179e5fd6c2c1d5c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b60533e3-f6c6-48d3-8b4b-05e7a385d50c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b60533e3-f6c6-48d3-8b4b-05e7a385d50c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b60533e3-f6c6-48d3-8b4b-05e7a385d50c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x517dab54164bd496ef25feaa693d64aaf5a61b3355fdaff1a179e5fd6c2c1d5c","name":"Ernesto Ferreyra","registered_at":"2026-06-20T15:07:43Z","symbol":"NIM1636793","token_address":"0x03fc338ce5ac35030e3088d45f4ee5db0c377a97","type":"artist","uuid":"b60533e3-f6c6-48d3-8b4b-05e7a385d50c"}
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 0x517dab54164bd496ef25feaa693d64aaf5a61b3355fdaff1a179e5fd6c2c1d5c. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b60533e3-f6c6-48d3-8b4b-05e7a385d50c.json and https://artists.proofprofile.net/proofs/artist/b60533e3-f6c6-48d3-8b4b-05e7a385d50c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0x517dab54164bd496ef25feaa693d64aaf5a61b3355fdaff1a179e5fd6c2c1d5c","name":"Ernesto Ferreyra","registered_at":"2026-06-20T15:07:43Z","symbol":"NIM1636793","token_address":"0x03fc338ce5ac35030e3088d45f4ee5db0c377a97","type":"artist","uuid":"b60533e3-f6c6-48d3-8b4b-05e7a385d50c"}
album: Memoria Colectiva
  type: MusicAlbum
  date published: 2006-11-27
album: The Focal Point
  type: MusicAlbum
  date published: 2009-01-01
album: Siluetas
  type: MusicAlbum
  date published: 2009-03-09
album: Siluetas
  type: MusicAlbum
  date published: 2009-04-20
album: El Paraiso de las Tortugas
  type: MusicAlbum
  date published: 2010-11-08
album: El Paraiso De Las Tortugas
  type: MusicAlbum
  date published: 2010-11-16
album: El Paraiso de las Tortugas
  type: MusicAlbum
  date published: 2011-01-23
album: El Paraiso De Las Tortugas Remixes
  type: MusicAlbum
  date published: 2011-01-31
album: Message from Abroad EP
  type: MusicAlbum
  date published: 2013-02-21
album: Insight
  type: MusicAlbum
  date published: 2014-06-02
album: Insight
  type: MusicAlbum
  date published: 2014-06-16
album: Some Kind Of Sign
  type: MusicAlbum
  date published: 2014-11-10
album: Some Kind of Sign
  type: MusicAlbum
  date published: 2014-11-10
album: Momentz001
  type: MusicAlbum
  date published: 2022-04-07
album: Midnight Sun
  type: MusicAlbum
  date published: 2024-01-18
track: Barreyra
  type: MusicRecording
  duration: PT7M25S
  duration ms: 445680
  explicit: false
  by artist: Barem
  by artist: Ernesto Ferreyra
  in album: Musica Lunar 2
    type: MusicAlbum
    date published: 2020-07-23
  isrc code: GBKQU2067433
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T21:51:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5753666ea00d4ea3c7f64d9a6e258826f34ef7adc737916a1147f831d3d6e839
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960321
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960321
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2067433
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T22:27:30Z
  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 0x5753666ea00d4ea3c7f64d9a6e258826f34ef7adc737916a1147f831d3d6e839. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBKQU2067433.
    date published: 2026-07-30T22:27:30Z
  audio: Barreyra
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 135.012
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.808
    additional property: Energy
      type: PropertyValue
      value: 0.562
    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
      value: 0.063
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.96
    additional property: Liveness
      type: PropertyValue
      value: 0.111
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.338
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.59
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor