Polmo Polpo
type: MusicGroup
genre: drone
genre: post-rock
popularity: 7
followers: 1979
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9a6d1d4d07229743dd450259bcff261d8cbc9668f7cdb028086b7b835509ce9
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/6f2d8ce4-1155-439c-a334-ca74a05492be.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f2d8ce4-1155-439c-a334-ca74a05492be.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f2d8ce4-1155-439c-a334-ca74a05492be
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb9a6d1d4d07229743dd450259bcff261d8cbc9668f7cdb028086b7b835509ce9","name":"Polmo Polpo","registered_at":"2026-06-17T04:19:04Z","symbol":"NIM1278885","token_address":"0xd73167b06bdbaed71c727af01a73a81f39072a67","type":"artist","uuid":"6f2d8ce4-1155-439c-a334-ca74a05492be"}
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 0xb9a6d1d4d07229743dd450259bcff261d8cbc9668f7cdb028086b7b835509ce9. 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/6f2d8ce4-1155-439c-a334-ca74a05492be.json and https://artists.proofprofile.net/proofs/artist/6f2d8ce4-1155-439c-a334-ca74a05492be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb9a6d1d4d07229743dd450259bcff261d8cbc9668f7cdb028086b7b835509ce9","name":"Polmo Polpo","registered_at":"2026-06-17T04:19:04Z","symbol":"NIM1278885","token_address":"0xd73167b06bdbaed71c727af01a73a81f39072a67","type":"artist","uuid":"6f2d8ce4-1155-439c-a334-ca74a05492be"}
album: The Science Of Breath
  type: MusicAlbum
  date published: 2002-06-22
album: Like Hearts Swelling
  type: MusicAlbum
  date published: 2003-09-22
album: Like Hearts Swelling
  type: MusicAlbum
  date published: 2003-09-22
album: Like Hearts Swelling
  type: MusicAlbum
  date published: 2003-09-22
  track: Requiem For A Fox
    type: MusicRecording
    duration: PT11M4S
    duration ms: 664293
    explicit: false
    by artist: Polmo Polpo
    in album: Like Hearts Swelling
      type: MusicAlbum
      date published: 2003-09-22
    genre: drone
    genre: post-rock
    isrc code: CACQ20702602
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T18:33:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x767ef13576339b80c42b7ec7e64347389e382f64063a44f6858e6b9cb734284d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958601
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958601
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACQ20702602
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:27:02Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767ef13576339b80c42b7ec7e64347389e382f64063a44f6858e6b9cb734284d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CACQ20702602.
      date published: 2026-07-18T19:27:02Z
    audio: Requiem For A Fox
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.573
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.452
      additional property: Energy
        type: PropertyValue
        value: 0.492
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.842
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.103
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.487
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Dreaming... Again (2020)
  type: MusicAlbum
  date published: 2020-03-20
album: Dreaming... Again (2020)
  type: MusicAlbum
  date published: 2020-03-20