Hartwell
type: MusicGroup
description: Hartwell may refer to: Places Hartwell, Victoria, a neighbourhood of Camberwell in Melbourne, Australia Hartwell railway station England Hartwell, Buckinghamshire Hartwell, Northamptonshire, a
popularity: 5
followers: 2138
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x80fa9a1a66b8b010020a63f14a41d31860182a98310995b7c6007587884f9293
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9406e58b-a3bf-4393-bd84-5838a18147c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9406e58b-a3bf-4393-bd84-5838a18147c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9406e58b-a3bf-4393-bd84-5838a18147c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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 0x80fa9a1a66b8b010020a63f14a41d31860182a98310995b7c6007587884f9293. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9406e58b-a3bf-4393-bd84-5838a18147c3.json and https://artists.proofprofile.net/proofs/artist/9406e58b-a3bf-4393-bd84-5838a18147c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Are You Holding Back?
  type: MusicAlbum
  date published: 2020-05-08
album: Universal Love
  type: MusicAlbum
  date published: 2020-05-15
album: Universal Love
  type: MusicAlbum
  date published: 2020-06-12
album: Universal Love
  type: MusicAlbum
  date published: 2020-08-22
album: Lovah
  type: MusicAlbum
  date published: 2021-03-03
album: My Body
  type: MusicAlbum
  date published: 2021-05-07
album: Wildflowers
  type: MusicAlbum
  date published: 2021-08-03
album: Pearls
  type: MusicAlbum
  date published: 2021-09-15
album: For This World
  type: MusicAlbum
  date published: 2022-09-16
album: Pearls
  type: MusicAlbum
  date published: 2022-12-02
album: Georgia Peaches
  type: MusicAlbum
  date published: 2024-03-08
album: Good Ol' Kentucky
  type: MusicAlbum
  date published: 2024-03-29
album: Daisy
  type: MusicAlbum
  date published: 2024-05-10
album: Daisy (Live)
  type: MusicAlbum
  date published: 2024-06-20
album: Roots EP
  type: MusicAlbum
  date published: 2024-06-28
album: Sail With Me
  type: MusicAlbum
  date published: 2024-08-23
album: Sail With Me
  type: MusicAlbum
  date published: 2024-09-27
  track: Sail With Me
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200108
    explicit: false
    by artist: Hartwell
    in album: Sail With Me
      type: MusicAlbum
      date published: 2024-09-27
    isrc code: QZTAY2422129
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T17:35:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe9e4d899a11feffbf1c025a21c60a6fdbda82c355d880819edb7fcc0f74fe9db
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959043
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959043
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2422129
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T18:40:26Z
    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 0xe9e4d899a11feffbf1c025a21c60a6fdbda82c355d880819edb7fcc0f74fe9db. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTAY2422129.
      date published: 2026-07-21T18:40:26Z
    audio: Sail With Me
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.065
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.598
      additional property: Energy
        type: PropertyValue
        value: 0.564
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.596
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.486
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.348
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Christmas Songs
  type: MusicAlbum
  date published: 2024-12-06
album: Forever 21
  type: MusicAlbum
  date published: 2025-06-20
album: Graveyard EP
  type: MusicAlbum
  date published: 2025-10-24