mahiro iska
type: MusicGroup
popularity: 7
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0905733d9fd742ed65f1e4c7d06b1854be0c952e69f0cb21603597c51cd51d25
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9bec6d96-89e6-42e9-8d81-6b43ccbe5002.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9bec6d96-89e6-42e9-8d81-6b43ccbe5002.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9bec6d96-89e6-42e9-8d81-6b43ccbe5002
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0905733d9fd742ed65f1e4c7d06b1854be0c952e69f0cb21603597c51cd51d25","name":"mahiro iska","registered_at":"2026-06-20T03:54:07Z","symbol":"NIM1504226","token_address":"0x3e89106f72c0cb3ec3426874fb85ea0567345c15","type":"artist","uuid":"9bec6d96-89e6-42e9-8d81-6b43ccbe5002"}
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 0x0905733d9fd742ed65f1e4c7d06b1854be0c952e69f0cb21603597c51cd51d25. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bec6d96-89e6-42e9-8d81-6b43ccbe5002.json and https://artists.proofprofile.net/proofs/artist/9bec6d96-89e6-42e9-8d81-6b43ccbe5002.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x0905733d9fd742ed65f1e4c7d06b1854be0c952e69f0cb21603597c51cd51d25","name":"mahiro iska","registered_at":"2026-06-20T03:54:07Z","symbol":"NIM1504226","token_address":"0x3e89106f72c0cb3ec3426874fb85ea0567345c15","type":"artist","uuid":"9bec6d96-89e6-42e9-8d81-6b43ccbe5002"}
album: space february
  type: MusicAlbum
  date published: 2024-03-15
album: fast as the wind
  type: MusicAlbum
  date published: 2024-04-12
album: fast as the wind
  type: MusicAlbum
  date published: 2024-04-12
album: nostalgic
  type: MusicAlbum
  date published: 2024-05-10
album: sweet togetherness
  type: MusicAlbum
  date published: 2024-09-02
album: Gion jam
  type: MusicAlbum
  date published: 2024-10-04
album: NEON TEARS
  type: MusicAlbum
  date published: 2024-12-30
album: GOING FORWARD
  type: MusicAlbum
  date published: 2025-01-06
album: A Song for the Days Gone By
  type: MusicAlbum
  date published: 2025-02-25
  track: A Song for the Days Gone By
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190411
    explicit: false
    by artist: mahiro iska
    in album: A Song for the Days Gone By
      type: MusicAlbum
      date published: 2025-02-25
    isrc code: US3DF2509638
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T08:40:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x82a60260fdc2807509485485a5d835889838c80991a79f8e311a9b6298917c43
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958134
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958134
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2509638
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T09:14:08Z
    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 0x82a60260fdc2807509485485a5d835889838c80991a79f8e311a9b6298917c43. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/US3DF2509638.
      date published: 2026-07-15T09:14:08Z
    audio: A Song for the Days Gone By
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 76.077
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.449
      additional property: Energy
        type: PropertyValue
        value: 0.14
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.98
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.188
      additional property: Liveness
        type: PropertyValue
        value: 0.146
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.124
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.818
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: PRESS START
  type: MusicAlbum
  date published: 2025-04-01
album: Moonlit Minuet
  type: MusicAlbum
  date published: 2025-05-06
album: From Sunrise to Moonlight
  type: MusicAlbum
  date published: 2025-06-17
album: a good day never ends
  type: MusicAlbum
  date published: 2025-08-25
album: fireflies
  type: MusicAlbum
  date published: 2025-09-08
album: 恋ぼし
  type: MusicAlbum
  date published: 2025-09-18
album: from the vault, Vol. 1
  type: MusicAlbum
  date published: 2025-11-07