Surf Harp
type: MusicGroup
genre: krautrock
genre: space rock
popularity: 2
followers: 335
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x93c06f27aa7ea21c052edefd496dfcce0881fb463e57063dd9daac722140c17c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c3086912-8591-4130-8a53-851a2b7c2039.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c3086912-8591-4130-8a53-851a2b7c2039.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c3086912-8591-4130-8a53-851a2b7c2039
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x93c06f27aa7ea21c052edefd496dfcce0881fb463e57063dd9daac722140c17c","name":"Surf Harp","registered_at":"2026-06-20T20:12:00Z","symbol":"NIM1702604","token_address":"0x7bda8185173abe0b3dfbf571d8694e18b9552b62","type":"artist","uuid":"c3086912-8591-4130-8a53-851a2b7c2039"}
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 0x93c06f27aa7ea21c052edefd496dfcce0881fb463e57063dd9daac722140c17c. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3086912-8591-4130-8a53-851a2b7c2039.json and https://artists.proofprofile.net/proofs/artist/c3086912-8591-4130-8a53-851a2b7c2039.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x93c06f27aa7ea21c052edefd496dfcce0881fb463e57063dd9daac722140c17c","name":"Surf Harp","registered_at":"2026-06-20T20:12:00Z","symbol":"NIM1702604","token_address":"0x7bda8185173abe0b3dfbf571d8694e18b9552b62","type":"artist","uuid":"c3086912-8591-4130-8a53-851a2b7c2039"}
album: Language is Lost
  type: MusicAlbum
  date published: 2023-08-25
  track: Permissions from Horai
    type: MusicRecording
    duration: PT3M50S
    duration ms: 230411
    explicit: false
    by artist: Surf Harp
    in album: Language is Lost
      type: MusicAlbum
      date published: 2023-08-25
    genre: baltimore-indie
    isrc code: QZNWT2380009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T08:16:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x732384c4921b52e8f695614d4775a945b69ca624aa46cbae0f437ff013fc058c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957819
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957819
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2380009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T07:53:33Z
    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 0x732384c4921b52e8f695614d4775a945b69ca624aa46cbae0f437ff013fc058c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNWT2380009 — a six-check JSON result.
      date published: 2026-07-13T07:53:33Z
    audio: Permissions from Horai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.621
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.745
      additional property: Energy
        type: PropertyValue
        value: 0.436
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.795
      additional property: Liveness
        type: PropertyValue
        value: 0.077
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.559
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.849
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Mr. Big Picture
  type: MusicAlbum
  date published: 2018-02-23
album: Peel
  type: MusicAlbum
  date published: 2016-02-12
album: Willowing
  type: MusicAlbum
  date published: 2023-08-18
album: Precious Decisions
  type: MusicAlbum
  date published: 2023-08-04
album: Remixter Big Picture
  type: MusicAlbum
  date published: 2020-02-23
album: Baltimore Does Bowie
  type: MusicAlbum
  date published: 2018-03-21
album: Friends With Benefits
  type: MusicAlbum
  date published: 2014-04-05