久遠たま
type: MusicGroup
popularity: 9
followers: 1068
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8602a63292615cb1f6ceb7edec89dab30407cabf899dfea2a79bcca551a67f5f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953888
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953888
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0dadda12-c190-43b9-97b9-52e2c9b15978.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0dadda12-c190-43b9-97b9-52e2c9b15978.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0dadda12-c190-43b9-97b9-52e2c9b15978
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:55:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8602a63292615cb1f6ceb7edec89dab30407cabf899dfea2a79bcca551a67f5f","name":"久遠たま","registered_at":"2026-06-15T18:17:39Z","symbol":"NIM0791702","token_address":"0xd790435bf0bfe0db32f7aa8e6f1f882381ca2217","type":"artist","uuid":"0dadda12-c190-43b9-97b9-52e2c9b15978"}
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 0x8602a63292615cb1f6ceb7edec89dab30407cabf899dfea2a79bcca551a67f5f. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dadda12-c190-43b9-97b9-52e2c9b15978.json and https://artists.proofprofile.net/proofs/artist/0dadda12-c190-43b9-97b9-52e2c9b15978.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:55:23Z
  text: {"copyright_id":"0x8602a63292615cb1f6ceb7edec89dab30407cabf899dfea2a79bcca551a67f5f","name":"久遠たま","registered_at":"2026-06-15T18:17:39Z","symbol":"NIM0791702","token_address":"0xd790435bf0bfe0db32f7aa8e6f1f882381ca2217","type":"artist","uuid":"0dadda12-c190-43b9-97b9-52e2c9b15978"}
album: ETERNAL STORY
  type: MusicAlbum
  date published: 2022-04-04
album: INITIUM
  type: MusicAlbum
  date published: 2022-05-04
album: LUX
  type: MusicAlbum
  date published: 2022-11-30
  track: シュガーソングとビターステップ - Cover
    type: MusicRecording
    duration: PT4M13S
    duration ms: 253640
    explicit: false
    by artist: 久遠たま
    in album: LUX
      type: MusicAlbum
      date published: 2022-11-30
    isrc code: JPQ332290523
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T01:33:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9e5195d1adba2e390fdbdf11e092ddcbc8d021ffb7758c9a206138f0ad6b2306
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958805
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958805
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPQ332290523
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:22:58Z
    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 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 0x9e5195d1adba2e390fdbdf11e092ddcbc8d021ffb7758c9a206138f0ad6b2306. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPQ332290523.
      date published: 2026-07-20T02:22:58Z
    audio: シュガーソングとビターステップ - Cover
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.975
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.734
      additional property: Energy
        type: PropertyValue
        value: 0.824
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.014
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.188
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.871
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.262
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: VIOLET ROSE
  type: MusicAlbum
  date published: 2022-11-30
album: SHADOW
  type: MusicAlbum
  date published: 2023-05-04
album: 色彩のコンダクター
  type: MusicAlbum
  date published: 2023-12-13
album: 終わりなきエーテル (Anime Cover)
  type: MusicAlbum
  date published: 2024-08-22
album: Owari naki Ether (Anime Cover)
  type: MusicAlbum
  date published: 2024-08-22
album: はうとぅアニオタ！
  type: MusicAlbum
  date published: 2025-07-07
album: How to Aniota！
  type: MusicAlbum
  date published: 2025-07-07
album: ぴくとりあん
  type: MusicAlbum
  date published: 2025-08-06
album: Pictorian
  type: MusicAlbum
  date published: 2025-08-06
album: discover
  type: MusicAlbum
  date published: 2025-11-10