Messy last girl
type: MusicGroup
popularity: 4
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf024bc8bf2ac515b30d9fe0211b2261b21c2a5ac089c564cc8c04ac72d00b49
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4a3f0c9-aeb8-497d-a7f8-d79996f10783.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4a3f0c9-aeb8-497d-a7f8-d79996f10783.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c4a3f0c9-aeb8-497d-a7f8-d79996f10783
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf024bc8bf2ac515b30d9fe0211b2261b21c2a5ac089c564cc8c04ac72d00b49","name":"Messy last girl","registered_at":"2026-06-20T20:56:47Z","symbol":"NIM1709348","token_address":"0x74cfe11c93392e2f9189ae82427b23e3a8316757","type":"artist","uuid":"c4a3f0c9-aeb8-497d-a7f8-d79996f10783"}
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 0xaf024bc8bf2ac515b30d9fe0211b2261b21c2a5ac089c564cc8c04ac72d00b49. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4a3f0c9-aeb8-497d-a7f8-d79996f10783.json and https://artists.proofprofile.net/proofs/artist/c4a3f0c9-aeb8-497d-a7f8-d79996f10783.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xaf024bc8bf2ac515b30d9fe0211b2261b21c2a5ac089c564cc8c04ac72d00b49","name":"Messy last girl","registered_at":"2026-06-20T20:56:47Z","symbol":"NIM1709348","token_address":"0x74cfe11c93392e2f9189ae82427b23e3a8316757","type":"artist","uuid":"c4a3f0c9-aeb8-497d-a7f8-d79996f10783"}
album: Brother
  type: MusicAlbum
  date published: 2024-04-15
album: Brother
  type: MusicAlbum
  date published: 2024-04-15
  track: Brother
    type: MusicRecording
    duration: PT2M44S
    duration ms: 164625
    explicit: false
    by artist: Messy last girl
    in album: Brother
      type: MusicAlbum
      date published: 2024-04-15
    isrc code: TCJPZ2492771
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T06:12:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x78a6ac7cccb5cbe76168db535b88c0419546aa9b4234d241275242a885fdd1ef
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958838
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958838
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPZ2492771
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:01:21Z
    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 0x78a6ac7cccb5cbe76168db535b88c0419546aa9b4234d241275242a885fdd1ef. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPZ2492771.
      date published: 2026-07-20T07:01:21Z
    audio: Brother
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.94
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.441
      additional property: Energy
        type: PropertyValue
        value: 0.928
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.345
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.494
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.855
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: kodokutokimi
  type: MusicAlbum
  date published: 2024-12-29
album: 孤独と君
  type: MusicAlbum
  date published: 2024-12-29
  track: 孤独と君
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200277
    explicit: false
    by artist: Messy last girl
    in album: 孤独と君
      type: MusicAlbum
      date published: 2024-12-29
    isrc code: TCJPD2431764
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:27:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xedd0ca910bbaaeebf1d9914624d084947914b1238dcbc5ed438393a37c3a5de9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2431764
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0xedd0ca910bbaaeebf1d9914624d084947914b1238dcbc5ed438393a37c3a5de9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPD2431764.
      date published: 2026-07-06T06:56:49Z
    audio: 孤独と君
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.016
      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: 0.664
      additional property: Energy
        type: PropertyValue
        value: 0.559
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Honestly

Liveness
type: PropertyValue
value: 0.081

Valence (Positivity)
type: PropertyValue
value: 0.644

Loudness (dB)
type: PropertyValue
value: -4.32

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Honestly
type: MusicAlbum
date published: 2025-06-01
track: Honestly
  type: MusicRecording
  duration: PT2M52S
  duration ms: 172650
  explicit: false
  by artist: Messy last girl
  in album: Honestly
    type: MusicAlbum
    date published: 2025-06-01
  isrc code: JP92A2504947
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T10:38:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4b1374689b9f28864cfb6416f4e6e9c4bb56e3df231fa1b9277dfcdf43debbdc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958404
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958404
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92A2504947
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T11:34:58Z
  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 0x4b1374689b9f28864cfb6416f4e6e9c4bb56e3df231fa1b9277dfcdf43debbdc. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JP92A2504947.
    date published: 2026-07-17T11:34:58Z
  audio: Honestly
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 93.476
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.386
    additional property: Energy
      type: PropertyValue
      value: 0.925
    additional property: Speechiness
      type: PropertyValue
      value: 0.067
    additional property: Acousticness
      type: PropertyValue
      value: 0.013
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.1
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.549
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.012
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major