MAHO堂
type: MusicGroup
genre: anime
popularity: 35
followers: 6817
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b8e9cd213d732a41a1b95e86b484232c79daf33d93b3bfa3440c0e503705486
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03426981-36b5-4859-865d-b9b29ffaf9f2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03426981-36b5-4859-865d-b9b29ffaf9f2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/03426981-36b5-4859-865d-b9b29ffaf9f2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8b8e9cd213d732a41a1b95e86b484232c79daf33d93b3bfa3440c0e503705486","name":"MAHO堂","registered_at":"2026-06-11T10:50:37Z","symbol":"NIM0004766","token_address":"0x2310fba1c43d000e27913b89445bec518a60e366","type":"artist","uuid":"03426981-36b5-4859-865d-b9b29ffaf9f2"}
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 0x8b8e9cd213d732a41a1b95e86b484232c79daf33d93b3bfa3440c0e503705486. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03426981-36b5-4859-865d-b9b29ffaf9f2.json and https://artists.proofprofile.net/proofs/artist/03426981-36b5-4859-865d-b9b29ffaf9f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x8b8e9cd213d732a41a1b95e86b484232c79daf33d93b3bfa3440c0e503705486","name":"MAHO堂","registered_at":"2026-06-11T10:50:37Z","symbol":"NIM0004766","token_address":"0x2310fba1c43d000e27913b89445bec518a60e366","type":"artist","uuid":"03426981-36b5-4859-865d-b9b29ffaf9f2"}
album: すい～とそんぐABC（オリジナル・カラオケ）
  type: MusicAlbum
  date published: 2020-11-16
album: ともだちの唄（メロカラ）
  type: MusicAlbum
  date published: 2020-11-16
album: 声をきかせて（メロカラ）
  type: MusicAlbum
  date published: 2020-11-16
album: ルピナスの子守唄（カラオケ）
  type: MusicAlbum
  date published: 2020-11-16
album: 空までJumping（カラオケ）
  type: MusicAlbum
  date published: 2020-11-16
album: 空までJumping（メロカラ）
  type: MusicAlbum
  date published: 2020-11-16
album: ともだちの唄（カラオケ）
  type: MusicAlbum
  date published: 2020-11-16
album: ほんじゃまおジャ魔女大集合!!（オリジナル・カラオケ）
  type: MusicAlbum
  date published: 2020-11-16
album: 夏のまほう
  type: MusicAlbum
  date published: 2020-11-16
  track: 夏のまほう
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236226
    explicit: false
    by artist: MAHO堂
    in album: 夏のまほう
      type: MusicAlbum
      date published: 2020-11-16
    genre: anime
    isrc code: JPD600100338
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T08:50:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcc4eaec64744cf60c2bd1995ff61bec05b3663cda846a86b88f0fcdaf9fa438a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD600100338
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xcc4eaec64744cf60c2bd1995ff61bec05b3663cda846a86b88f0fcdaf9fa438a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPD600100338.
      date published: 2026-07-04T10:04:33Z
    audio: 夏のまほう
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.124
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.679
      additional property: Energy
        type: PropertyValue
        value: 0.719
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.503
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.14
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.273
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.042
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major