Sleeping Pola
type: MusicGroup
genre: japanese indie
genre: math rock
genre: midwest emo
popularity: 15
followers: 2274
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x180681a5d60200bd42626b5efd2738087a2032692b6d6f454147773df3d7b4d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953605
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953605
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fd8d55b-8427-427d-b784-7f003d265eac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fd8d55b-8427-427d-b784-7f003d265eac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0fd8d55b-8427-427d-b784-7f003d265eac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:39:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x180681a5d60200bd42626b5efd2738087a2032692b6d6f454147773df3d7b4d8","name":"Sleeping Pola","registered_at":"2026-06-14T06:06:15Z","symbol":"NIM0361880","token_address":"0x2127e2d5880d9985ba41fd9cec993c89c18c5ec4","type":"artist","uuid":"0fd8d55b-8427-427d-b784-7f003d265eac"}
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 0x180681a5d60200bd42626b5efd2738087a2032692b6d6f454147773df3d7b4d8. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fd8d55b-8427-427d-b784-7f003d265eac.json and https://artists.proofprofile.net/proofs/artist/0fd8d55b-8427-427d-b784-7f003d265eac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T07:39:50Z
  text: {"copyright_id":"0x180681a5d60200bd42626b5efd2738087a2032692b6d6f454147773df3d7b4d8","name":"Sleeping Pola","registered_at":"2026-06-14T06:06:15Z","symbol":"NIM0361880","token_address":"0x2127e2d5880d9985ba41fd9cec993c89c18c5ec4","type":"artist","uuid":"0fd8d55b-8427-427d-b784-7f003d265eac"}
album: hidarime
  type: MusicAlbum
  date published: 2019-06-05
album: hidarime
  type: MusicAlbum
  date published: 2019-06-05
album: natsunokioku
  type: MusicAlbum
  date published: 2019-08-28
album: natsunokioku
  type: MusicAlbum
  date published: 2019-08-28
  track: ochitasemiwomiteiru
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221129
    explicit: false
    by artist: Sleeping Pola
    in album: natsunokioku
      type: MusicAlbum
      date published: 2019-08-28
    genre: japanese indie
    genre: math rock
    genre: midwest emo
    isrc code: TCJPJ1950028
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T13:01:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa8d1135f72259b1be9c35e796536cd6fb775a162b6b94fe5262ed229ad8910be
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1950028
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T16:04:34Z
    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 0xa8d1135f72259b1be9c35e796536cd6fb775a162b6b94fe5262ed229ad8910be. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:34Z), 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/TCJPJ1950028.
      date published: 2026-07-19T16:04:34Z
    audio: ochitasemiwomiteiru
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.014
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.555
      additional property: Energy
        type: PropertyValue
        value: 0.889
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.898
      additional property: Liveness
        type: PropertyValue
        value: 0.185
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.54
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.708
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: kuuchuubunkai
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237055
    explicit: false
    by artist: Sleeping Pola
    in album: natsunokioku
      type: MusicAlbum
      date published: 2019-08-28
    genre: japanese indie
    genre: math rock
    genre: midwest emo
    isrc code: TCJPJ1950033
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T05:28:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x26bdd96d09db1512a6f3280aaf25ed1175a6b270e545a987d1fae3d9bf39a10e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1950033
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x26bdd96d09db1512a6f3280aaf25ed1175a6b270e545a987d1fae3d9bf39a10e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPJ1950033.
      date published: 2026-07-03T08:56:35Z
    audio: kuuchuubunkai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 107.775
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.289
      additional property: Energy
        type: PropertyValue
        value: 0.911
      additional property: Speechiness
      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: W-O-R-L-D
album: M.M.T.
album: 4423
album: M.M.T. (Re-Arranged)
album: ochitasemiwomiteiru
album: lastnaut
album: [+TTTT]
album: 2134
album: witchphrenia
album: WORST END
album: akaishirushi
album: uminonaka

Speechiness
type: PropertyValue
value: 0.104

Acousticness
type: PropertyValue
value: 0.007

Instrumentalness
type: PropertyValue
value: 0.878

Liveness
type: PropertyValue
value: 0.366

Valence (Positivity)
type: PropertyValue
value: 0.459

Loudness (dB)
type: PropertyValue
value: -3.04

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor

W-O-R-L-D
type: MusicAlbum
date published: 2020-02-03

M.M.T.
type: MusicAlbum
date published: 2020-05-06

4423
type: MusicAlbum
date published: 2021-08-25
track: 4423
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211400
  explicit: false
  by artist: Sleeping Pola
  in album: 4423
    type: MusicAlbum
    date published: 2021-08-25
  genre: japanese indie
  genre: math rock
  genre: midwest emo
  isrc code: JPV752104848
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T13:10:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x76fc36d587e445eae9200f52a4703b6d28406439bf8de6928e5b9daacb1130a4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958749
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958749
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPV752104848
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T16:12:45Z
  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 0x76fc36d587e445eae9200f52a4703b6d28406439bf8de6928e5b9daacb1130a4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:45Z), 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/JPV752104848.
    date published: 2026-07-19T16:12:45Z
  audio: 4423
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 180.045
    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: 0.251
    additional property: Energy
      type: PropertyValue
      value: 0.624
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.001
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.739
    additional property: Liveness
      type: PropertyValue
      value: 0.355
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.663
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.81
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

M.M.T. (Re-Arranged)
type: MusicAlbum
date published: 2023-05-10

ochitasemiwomiteiru
type: MusicAlbum
date published: 2023-07-17

lastnaut
type: MusicAlbum
date published: 2023-08-28

W-O-R-L-D
type: MusicAlbum
date published: 2024-05-15

[+TTTT]
type: MusicAlbum
date published: 2024-12-21

2134
type: MusicAlbum
date published: 2025-01-25

2134
type: MusicAlbum
date published: 2025-01-25

witchphrenia
type: MusicAlbum
date published: 2025-03-16
track: witchphrenia
  type: MusicRecording
  duration: PT2M50S
  duration ms: 170876
  explicit: false
  by artist: Sleeping Pola
  in album: witchphrenia
    type: MusicAlbum
    date published: 2025-03-16
  genre: japanese indie
  genre: math rock
  genre: midwest emo
  isrc code: TCJPE2574403
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-14T23:21:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4fcf4b13c1bd42c81eb1b3e5afa59f7d2f9a10f5f590591333ea36a7e7a283f0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958079
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958079
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPE2574403
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T00:21:05Z
  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 0x4fcf4b13c1bd42c81eb1b3e5afa59f7d2f9a10f5f590591333ea36a7e7a283f0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCJPE2574403.
    date published: 2026-07-15T00:21:05Z
  audio: witchphrenia
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 147.622
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.417
    additional property: Energy
      type: PropertyValue
      value: 0.96
    additional property: Speechiness
      type: PropertyValue
      value: 0.244
    additional property: Acousticness
      type: PropertyValue
      value: 0.002
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.726
    additional property: Liveness
      type: PropertyValue
      value: 0.029
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.606
    additional property: Loudness (dB)
      type: PropertyValue
      value: -2.931
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

witchphrenia
type: MusicAlbum
date published: 2025-03-16

WORST END
type: MusicAlbum
date published: 2025-04-26
track: mihate
  type: MusicRecording
  duration: PT3M22S
  duration ms: 202750
  explicit: false
  by artist: Sleeping Pola
  in album: WORST END
    type: MusicAlbum
    date published: 2025-04-26
  genre: japanese indie
  genre: math rock
  genre: midwest emo
  isrc code: TCJPG2567933
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T23:17:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x853cb5caf3febc12d8ddf5b6a761cabc979f99c1d7da6bcf11425da3383bfd82
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957772
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957772
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPG2567933
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T23:31:17Z
  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 0x853cb5caf3febc12d8ddf5b6a761cabc979f99c1d7da6bcf11425da3383bfd82. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCJPG2567933.
    date published: 2026-07-12T23:31:17Z
  audio: mihate
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.398
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.407
    additional property: Energy
      type: PropertyValue
      value: 0.657
    additional property: Speechiness
      type: PropertyValue
      value: 0.056
    additional property: Acousticness
      type: PropertyValue
      value: 0
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.815
    additional property: Liveness
      type: PropertyValue
      value: 0.267
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.483
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.273
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor

WORST END
type: MusicAlbum
date published: 2025-04-26

lastnaut
type: MusicAlbum
date published: 2025-05-03
track: M.M.T.
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200000
  explicit: false
  by artist: Sleeping Pola
  in album: lastnaut
    type: MusicAlbum
    date published: 2025-05-03
  genre: japanese indie
  genre: math rock
  genre: midwest emo
  isrc code: QZMHK2337588
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T18:18:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2b2f03f5871b99deaea15b27ad6a954edfe3ac987645d7e7354bd9c88ffcd291
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958196
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958196
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2337588
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T20:38:50Z
  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
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lastnaut
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date published: 2025-05-03

akaishirushi
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date published: 2025-05-03

akaishirushi
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date published: 2025-05-03

uminonaka
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date published: 2025-05-03
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    date published: 2025-05-03
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  genre: math rock
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    date published: 2026-07-04T10:04:33Z
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uminonaka
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date published: 2025-05-03