Hartlet
type: MusicGroup
popularity: 9
followers: 484
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa404bc5bb333568031cc54dac80262bf699ab1d0279dbe8995f6ee4f7ca0896a
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/8338a04d-32c6-4d6d-bdbd-9f14e473a530.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8338a04d-32c6-4d6d-bdbd-9f14e473a530.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8338a04d-32c6-4d6d-bdbd-9f14e473a530
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
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 0xa404bc5bb333568031cc54dac80262bf699ab1d0279dbe8995f6ee4f7ca0896a. 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/8338a04d-32c6-4d6d-bdbd-9f14e473a530.json and https://artists.proofprofile.net/proofs/artist/8338a04d-32c6-4d6d-bdbd-9f14e473a530.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: Running with Scissors
  type: MusicAlbum
  date published: 2021-09-04
album: Seasons
  type: MusicAlbum
  date published: 2022-02-01
album: Between First & Second
  type: MusicAlbum
  date published: 2022-05-23
album: Hours of operation
  type: MusicAlbum
  date published: 2022-09-21
album: Shortstop
  type: MusicAlbum
  date published: 2022-12-31
album: Stiffler
  type: MusicAlbum
  date published: 2023-06-15
album: Stealing Home
  type: MusicAlbum
  date published: 2025-01-31
  track: Like a mess
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179750
    explicit: false
    by artist: Hartlet
    in album: Stealing Home
      type: MusicAlbum
      date published: 2025-01-31
    isrc code: QZFYZ2585002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:34:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd6435dd3bf1e6fcd687597e844b2d660547a99b0864d0892e338bd16e13491a9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958834
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958834
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2585002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T05:55:47Z
    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 0xd6435dd3bf1e6fcd687597e844b2d660547a99b0864d0892e338bd16e13491a9. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZFYZ2585002.
      date published: 2026-07-20T05:55:47Z
    audio: Like a mess
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.223
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.292
      additional property: Energy
        type: PropertyValue
        value: 0.905
      additional property: Speechiness
        type: PropertyValue
        value: 0.142
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.093
      additional property: Liveness
        type: PropertyValue
        value: 0.174
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.096
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.007
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Nosebleeds
    type: MusicRecording
    duration: PT4M29S
    duration ms: 269749
    explicit: false
    by artist: Hartlet
    in album: Stealing Home
      type: MusicAlbum
      date published: 2025-01-31
    isrc code: QZFYZ2585003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:45:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaaed8230233841e62cef07d1ff8fddb27f6fc932e42d942dcc3bd5dbe4851468
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957761
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2585003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T21:55:15Z
    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 0xaaed8230233841e62cef07d1ff8fddb27f6fc932e42d942dcc3bd5dbe4851468. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZFYZ2585003.
      date published: 2026-07-12T21:55:15Z
    audio: Nosebleeds
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.151
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.31
      additional property: Energy
        type: PropertyValue
        value: 0.986
      additional property: Speechiness
        type: PropertyValue
        value: 0.126
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Medicine

Acousticness
type: PropertyValue
value: 0

Instrumentalness
type: PropertyValue
value: 0.199

Liveness
type: PropertyValue
value: 0.122

Valence (Positivity)
type: PropertyValue
value: 0.177

Loudness (dB)
type: PropertyValue
value: -3.312

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Medicine
type: MusicAlbum
date published: 2025-06-25