akii
type: MusicGroup
popularity: 3
followers: 74
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e7217de7c0b57910873af1321732c54f98516d78e1143fab02bd968248939f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3155cc6-57d2-4b66-8106-6135cad77f19.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3155cc6-57d2-4b66-8106-6135cad77f19.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f3155cc6-57d2-4b66-8106-6135cad77f19
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
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 0x4e7217de7c0b57910873af1321732c54f98516d78e1143fab02bd968248939f1. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3155cc6-57d2-4b66-8106-6135cad77f19.json and https://artists.proofprofile.net/proofs/artist/f3155cc6-57d2-4b66-8106-6135cad77f19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
album: koinosain
  type: MusicAlbum
  date published: 2021-08-30
album: hananomazinai
  type: MusicAlbum
  date published: 2021-11-28
album: the magic of christmas
  type: MusicAlbum
  date published: 2021-12-10
album: turn it into positive
  type: MusicAlbum
  date published: 2022-08-07
album: still in the middle of a dream
  type: MusicAlbum
  date published: 2023-03-13
album: まいふれんど
  type: MusicAlbum
  date published: 2023-09-16
  track: まいふれんど
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236250
    explicit: false
    by artist: akii
    in album: まいふれんど
      type: MusicAlbum
      date published: 2023-09-16
    isrc code: TCJPX2345438
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T00:57:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbbbc4979e6b619b1ff91ff7ce4875b72ccb24cc6ef5f1a71fc0bd641851f478a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2345438
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0xbbbc4979e6b619b1ff91ff7ce4875b72ccb24cc6ef5f1a71fc0bd641851f478a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPX2345438.
      date published: 2026-07-19T07:14:39Z
    audio: まいふれんど
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 92.025
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.686
      additional property: Energy
        type: PropertyValue
        value: 0.672
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.379
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.364
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.34
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.404
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: My Friend
  type: MusicAlbum
  date published: 2023-09-16
album: Live your life
  type: MusicAlbum
  date published: 2023-11-11
album: Youth with you in this city
  type: MusicAlbum
  date published: 2024-03-02
album: この街であんたと青春
  type: MusicAlbum
  date published: 2024-03-02
album: ienaikoe
  type: MusicAlbum
  date published: 2024-04-28
album: HappyDaySong
  type: MusicAlbum
  date published: 2024-10-06
album: HappyDaySong
  type: MusicAlbum
  date published: 2024-10-06
album: BIRTH DAY PARTY
  type: MusicAlbum
  date published: 2024-10-31
album: またねの来ない「またね」
  type: MusicAlbum
  date published: 2025-02-23
album: Farewell
  type: MusicAlbum
  date published: 2025-02-23
album: ポジティブ変換
  type: MusicAlbum
  date published: 2025-07-18
album: BIRTHDAY PARTY
  type: MusicAlbum
  date published: 2025-07-18
album: koinosain
  type: MusicAlbum
  date published: 2025-07-18
album: 恋のサイン
  type: MusicAlbum
  date published: 2025-07-18
album: BIRTHDAY PARTY
  type: MusicAlbum
  date published: 2025-07-18
album: sukinakotodakeshite ikiteitai
  type: MusicAlbum
  date published: 2025-07-18
album: positive song
  type: MusicAlbum
  date published: 2025-07-18
album: love me more
  type: MusicAlbum
  date published: 2025-07-26
album: love me more
  type: MusicAlbum
  date published: 2025-07-26
album: 「好き」で「恋」
  type: MusicAlbum
  date published: 2025-09-22
album: sukidekoi
  type: MusicAlbum
  date published: 2025-09-22