Sijima
type: MusicGroup
genre: city pop
genre: japanese indie
popularity: 8
followers: 1587
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c4d64bb2c04654dd382dd0000cf1f94c99c04b91dcb8cf949402c85396c6446
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/62e883b1-78ed-432e-9951-84c952958da5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/62e883b1-78ed-432e-9951-84c952958da5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/62e883b1-78ed-432e-9951-84c952958da5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d64bb2c04654dd382dd0000cf1f94c99c04b91dcb8cf949402c85396c6446. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62e883b1-78ed-432e-9951-84c952958da5.json and https://artists.proofprofile.net/proofs/artist/62e883b1-78ed-432e-9951-84c952958da5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: DRAMATIC
  type: MusicAlbum
  date published: 2019-04-24
album: Sweet Rain
  type: MusicAlbum
  date published: 2019-07-10
  track: Sweet Rain
    type: MusicRecording
    duration: PT4M34S
    duration ms: 274680
    explicit: false
    by artist: Sijima
    in album: Sweet Rain
      type: MusicAlbum
      date published: 2019-07-10
    genre: city pop
    genre: japanese indie
    isrc code: JPB601882006
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T22:05:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbf1f57493493e49919916b9efab1579ba6eebe335aa6b8a8adbff7395af24c7e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601882006
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xbf1f57493493e49919916b9efab1579ba6eebe335aa6b8a8adbff7395af24c7e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPB601882006.
      date published: 2026-07-06T01:25:57Z
    audio: Sweet Rain
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.972
      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: 0.73
      additional property: Energy
        type: PropertyValue
        value: 0.792
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.105
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.126
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.72
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.573
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Flap
  type: MusicAlbum
  date published: 2019-09-11
album: Can't stop loving you
  type: MusicAlbum
  date published: 2019-11-13
album: Twilight Time (T-Groove Remix)
  type: MusicAlbum
  date published: 2019-12-11
album: It's over
  type: MusicAlbum
  date published: 2020-02-05
album: Dolce
  type: MusicAlbum
  date published: 2020-03-01
album: Night Wave
  type: MusicAlbum
  date published: 2020-09-30
album: yowaki
  type: MusicAlbum
  date published: 2021-02-24
album: Jet Coaster Escape
  type: MusicAlbum
  date published: 2021-07-01
album: Summer Time
  type: MusicAlbum
  date published: 2021-08-25
album: Traveler
  type: MusicAlbum
  date published: 2022-01-19
album: Never Ending Story
  type: MusicAlbum
  date published: 2022-07-13
album: 永い夜
  type: MusicAlbum
  date published: 2022-10-19
album: Emerald Memory
  type: MusicAlbum
  date published: 2023-08-23
album: 光
  type: MusicAlbum
  date published: 2023-11-01
album: FLAVOR NINE
  type: MusicAlbum
  date published: 2023-12-05
album: Word Mirage
  type: MusicAlbum
  date published: 2024-10-16
album: 溢れ出すBLUE
  type: MusicAlbum
  date published: 2025-03-05
  track: 溢れ出すBLUE
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236915
    explicit: false
    by artist: Sijima
    in album: 溢れ出すBLUE
      type: MusicAlbum
      date published: 2025-03-05
    genre: city pop
    genre: japanese indie
    isrc code: JP92N2507445
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T03:40:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6225629e38a6f49aa254609e54b8727d55bc24f514b19cc633000e0069f360b1
    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: 溢れ出すBLUE
album: EVERDELIGHT

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958238

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958238

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2507445

OTSTimestamp
type: PropertyValue
value: 2026-07-16T04:30:31Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6225629e38a6f49aa254609e54b8727d55bc24f514b19cc633000e0069f360b1. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/JP92N2507445.
date published: 2026-07-16T04:30:31Z

溢れ出すBLUE
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 109.039
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: 0.702
additional property: Energy
  type: PropertyValue
  value: 0.774
additional property: Speechiness
  type: PropertyValue
  value: 0.035
additional property: Acousticness
  type: PropertyValue
  value: 0.261
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.077
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.876
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.807
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

EVERDELIGHT
type: MusicAlbum
date published: 2025-05-07
track: EVERDELIGHT
  type: MusicRecording
  duration: PT3M56S
  duration ms: 236388
  explicit: false
  by artist: Sijima
  in album: EVERDELIGHT
    type: MusicAlbum
    date published: 2025-05-07
  genre: city pop
  genre: japanese indie
  isrc code: JP92N2518992
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T05:17:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x62c294babba1283a22f4091947b54da543eac2947c66521e1769d7e13dac2036
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958110
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958110
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2518992
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T06:57:12Z
  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 0x62c294babba1283a22f4091947b54da543eac2947c66521e1769d7e13dac2036. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JP92N2518992.
    date published: 2026-07-15T06:57:12Z
  audio: EVERDELIGHT
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.004
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.626
    additional property: Energy
      type: PropertyValue
      value: 0.862
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.104
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.072
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.905
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.52
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major