Dave Holland
type: MusicGroup
description: Dave Holland or David Holland may refer to: Dave Holland (bassist) (born 1946), British jazz bassist and composer Dave Holland (drummer) (1948–2018), British rock drummer Dave Holland (Klansman), Am
popularity: 3
followers: 70
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaef65e87d1e1f1d6325243e5c82b5b1f2aea16460bcff43be5fd572e68d5d621
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8b0be15c-2c35-4b6a-af04-0a3d427ee202.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8b0be15c-2c35-4b6a-af04-0a3d427ee202.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8b0be15c-2c35-4b6a-af04-0a3d427ee202
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaef65e87d1e1f1d6325243e5c82b5b1f2aea16460bcff43be5fd572e68d5d621","name":"Dave Holland","registered_at":"2026-06-17T14:31:46Z","symbol":"NIM1424921","token_address":"0x0a67a31830faf128df6ea7675cf9a5719c7807b3","type":"artist","uuid":"8b0be15c-2c35-4b6a-af04-0a3d427ee202"}
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 0xaef65e87d1e1f1d6325243e5c82b5b1f2aea16460bcff43be5fd572e68d5d621. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b0be15c-2c35-4b6a-af04-0a3d427ee202.json and https://artists.proofprofile.net/proofs/artist/8b0be15c-2c35-4b6a-af04-0a3d427ee202.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xaef65e87d1e1f1d6325243e5c82b5b1f2aea16460bcff43be5fd572e68d5d621","name":"Dave Holland","registered_at":"2026-06-17T14:31:46Z","symbol":"NIM1424921","token_address":"0x0a67a31830faf128df6ea7675cf9a5719c7807b3","type":"artist","uuid":"8b0be15c-2c35-4b6a-af04-0a3d427ee202"}
album: Circumpolar
  type: MusicAlbum
  date published: 2020-12-02
  track: Circumpolar
    type: MusicRecording
    duration: PT3M49S
    duration ms: 229180
    explicit: false
    by artist: Dave Holland
    in album: Circumpolar
      type: MusicAlbum
      date published: 2020-12-02
    isrc code: SE6RB2049501
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T09:09:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x751905442bd90c5f2f1a2ef5894acf15ac71b13800322ad8998ac49685f3334f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958711
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958711
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6RB2049501
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T09:26:32Z
    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 0x751905442bd90c5f2f1a2ef5894acf15ac71b13800322ad8998ac49685f3334f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE6RB2049501.
      date published: 2026-07-19T09:26:32Z
    audio: Circumpolar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.981
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.373
      additional property: Energy
        type: PropertyValue
        value: 0.273
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.721
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.768
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.061
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.081
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major