夏背.
type: MusicGroup
genre: bassline
genre: vocaloid
popularity: 43
followers: 7329
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x376c59fc9070e9745e2aa0b43ee98f2c730cc0a04bf71d2d4a925227f9bdd773
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/753840e2-08b8-4307-b1f9-36ebd046b624.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/753840e2-08b8-4307-b1f9-36ebd046b624.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/753840e2-08b8-4307-b1f9-36ebd046b624
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x376c59fc9070e9745e2aa0b43ee98f2c730cc0a04bf71d2d4a925227f9bdd773","name":"夏背.","registered_at":"2026-06-12T01:07:00Z","symbol":"NIM0151622","token_address":"0x933237f1eb782fd52f4da55273929598835fc138","type":"artist","uuid":"753840e2-08b8-4307-b1f9-36ebd046b624"}
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 0x376c59fc9070e9745e2aa0b43ee98f2c730cc0a04bf71d2d4a925227f9bdd773. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/753840e2-08b8-4307-b1f9-36ebd046b624.json and https://artists.proofprofile.net/proofs/artist/753840e2-08b8-4307-b1f9-36ebd046b624.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x376c59fc9070e9745e2aa0b43ee98f2c730cc0a04bf71d2d4a925227f9bdd773","name":"夏背.","registered_at":"2026-06-12T01:07:00Z","symbol":"NIM0151622","token_address":"0x933237f1eb782fd52f4da55273929598835fc138","type":"artist","uuid":"753840e2-08b8-4307-b1f9-36ebd046b624"}
album: Revenge & Retaliation
  type: MusicAlbum
  date published: 2007-06-18
album: Move Girl
  type: MusicAlbum
  date published: 2007-08-13
album: Check With K
  type: MusicAlbum
  date published: 2009-07-24
album: We Rock We Roll
  type: MusicAlbum
  date published: 2010
album: Do What I Do
  type: MusicAlbum
  date published: 2010-06-07
album: You Ain't My Homie
  type: MusicAlbum
  date published: 2011-01-31
album: One Life
  type: MusicAlbum
  date published: 2012-01-01
album: One Life
  type: MusicAlbum
  date published: 2013-10-06
album: Kings of the World
  type: MusicAlbum
  date published: 2014-05-01
album: Kings of the World
  type: MusicAlbum
  date published: 2014-05-08
album: Evolve
  type: MusicAlbum
  date published: 2016-06-16
album: Wavey Jones
  type: MusicAlbum
  date published: 2017-10-06
album: Three Nights In Gleadless
  type: MusicAlbum
  date published: 2017-10-25
album: Three Nights At The Night Kitchen
  type: MusicAlbum
  date published: 2017-10-25
album: Reprobate
  type: MusicAlbum
  date published: 2017-10-25
album: Like Yours
  type: MusicAlbum
  date published: 2017-10-30
album: Three Nights In Dore Village
  type: MusicAlbum
  date published: 2018-02-16
album: Baby Girl
  type: MusicAlbum
  date published: 2019-09-04
album: What Guy
  type: MusicAlbum
  date published: 2020-06-21
album: Body Catching
  type: MusicAlbum
  date published: 2020-06-23
album: Real Like That
  type: MusicAlbum
  date published: 2020-07-30
album: Light in the Distance
  type: MusicAlbum
  date published: 2022-04-27
  track: Sunflower (feat. 夏背.)
    type: MusicRecording
    duration: PT3M33S
    duration ms: 213750
    explicit: false
    by artist: 夏背.
    in album: Light in the Distance
      type: MusicAlbum
      date published: 2022-04-27
    genre: bassline
    genre: vocaloid
    isrc code: TCJPR2264158
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T22:23:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x64dc50b863113851f99653ea9808e7aa634744ede95e3e1457125283b1176210
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957770
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957770
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2264158
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:17:00Z
    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 0x64dc50b863113851f99653ea9808e7aa634744ede95e3e1457125283b1176210. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPR2264158.
      date published: 2026-07-12T23:17:00Z
    audio: Sunflower (feat. 夏背.)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.988
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.556
      additional property: Energy
        type: PropertyValue
        value: 0.642
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.885
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.742
      additional property: Liveness
        type: PropertyValue
        value: 0.171
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.865
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.361
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
track: Surges
  type: MusicRecording
  duration: PT2M0S
  duration ms: 120875
  explicit: false
  by artist: Orangestar
  by artist: 夏背.
  by artist: ルワン
  in album: Surges
  popularity: 44
  genre: vocaloid
  isrc code: JPA652105516
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Surges
track: Noctiluca

Surges
type: MusicAlbum
date published: 2021-09-02

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-04T13:17:38+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x78407bf0dc47ee8e62d5bd9273238bb296943a09738a9a5e3d910fe33b86512b

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953513

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/953513

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPA652105516

OTSTimestamp
type: PropertyValue
value: 2026-06-13T12:47:07Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78407bf0dc47ee8e62d5bd9273238bb296943a09738a9a5e3d910fe33b86512b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPA652105516.
date published: 2026-06-13T12:47:07Z

Surges
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 136.95
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: 0.587
additional property: Energy
  type: PropertyValue
  value: 0.924
additional property: Speechiness
  type: PropertyValue
  value: 0.053
additional property: Acousticness
  type: PropertyValue
  value: 0.078
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.256
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.882
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.622
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

Noctiluca
type: MusicRecording
duration: PT4M0S
duration ms: 240590
explicit: false
by artist: Orangestar
by artist: 夏背.
by artist: 遼遼
in album: Postscript
  type: MusicAlbum
  date published: 2024-07-20
popularity: 16
genre: vocaloid
isrc code: JPPC02411525
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T23:40:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7f90d165c5cac2bb5168b2c97a7679883e375fcbdae1c4fcf62bee753488d6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02411525
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0xd7f90d165c5cac2bb5168b2c97a7679883e375fcbdae1c4fcf62bee753488d6e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPPC02411525.
  date published: 2026-07-02T03:30:09Z
audio: Noctiluca
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.25
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.464
  additional property: Energy
    type: PropertyValue
    value: 0.954
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.042
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.552
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.105
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major