Shingo Maekawa
type: MusicGroup
popularity: 2
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1a080aea9be4d12fda010342c8d70584f41084ab5829cbbb27358223d9d49b83
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/75734889-f3d5-4966-b9fb-cf94dd6f9490.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/75734889-f3d5-4966-b9fb-cf94dd6f9490.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/75734889-f3d5-4966-b9fb-cf94dd6f9490
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1a080aea9be4d12fda010342c8d70584f41084ab5829cbbb27358223d9d49b83","name":"Shingo Maekawa","registered_at":"2026-06-17T06:58:24Z","symbol":"NIM1316911","token_address":"0x067c373665b4be6af42bac3c0842c94ce35a74f7","type":"artist","uuid":"75734889-f3d5-4966-b9fb-cf94dd6f9490"}
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 0x1a080aea9be4d12fda010342c8d70584f41084ab5829cbbb27358223d9d49b83. 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/75734889-f3d5-4966-b9fb-cf94dd6f9490.json and https://artists.proofprofile.net/proofs/artist/75734889-f3d5-4966-b9fb-cf94dd6f9490.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x1a080aea9be4d12fda010342c8d70584f41084ab5829cbbb27358223d9d49b83","name":"Shingo Maekawa","registered_at":"2026-06-17T06:58:24Z","symbol":"NIM1316911","token_address":"0x067c373665b4be6af42bac3c0842c94ce35a74f7","type":"artist","uuid":"75734889-f3d5-4966-b9fb-cf94dd6f9490"}
album: KAWAGANAITERUYO
  type: MusicAlbum
  date published: 2020-12-09
album: Strobe
  type: MusicAlbum
  date published: 2021-06-12
album: Syunkan No Machine Gun (feat. ORIONBEATS)
  type: MusicAlbum
  date published: 2021-06-12
album: Hello California (feat. ORIONBEATS)
  type: MusicAlbum
  date published: 2021-06-23
album: ハローカリフォルニア (feat. ORIONBEATS)
  type: MusicAlbum
  date published: 2021-06-23
album: PARTY
  type: MusicAlbum
  date published: 2021-07-01
album: PARTY
  type: MusicAlbum
  date published: 2021-07-01
album: Natsuame
  type: MusicAlbum
  date published: 2021-07-31
album: One For Days
  type: MusicAlbum
  date published: 2021-10-27
album: One For Days
  type: MusicAlbum
  date published: 2021-10-27
album: LIBERTY FORCE (feat. Bugimaru)
  type: MusicAlbum
  date published: 2022-03-30
album: LIBERTY FORCE (feat. ブギ丸)
  type: MusicAlbum
  date published: 2022-03-30
track: たとえば唄えなくなったら -前川真悟 Duet Ver-
  type: MusicRecording
  duration: PT5M0S
  duration ms: 300746
  explicit: false
  by artist: Stereopony
  by artist: kariyushi58
  by artist: Shingo Maekawa
  in album: たとえば唄えなくなったら
    type: MusicAlbum
    date published: 2011-08-10
  isrc code: JPSR01101884
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T10:51:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x09c0569d2d06e21432387454a2315bc66bc34679a6b52737243c65166dcd541c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR01101884
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x09c0569d2d06e21432387454a2315bc66bc34679a6b52737243c65166dcd541c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPSR01101884.
    date published: 2026-07-08T03:20:19Z
  audio: たとえば唄えなくなったら -前川真悟 Duet Ver-
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 116.28
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.639
    additional property: Energy
      type: PropertyValue
      value: 0.749
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.07
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.253
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.525
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.693
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major