Romanha Marshmallow
type: MusicGroup
popularity: 5
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea9fcae2e50e9c6824e48b0702e36223be20bcb07530f7f3ac91630a8372bbd0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9f36c98-6cfb-4182-a1ae-ab10f2142729.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9f36c98-6cfb-4182-a1ae-ab10f2142729.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e9f36c98-6cfb-4182-a1ae-ab10f2142729
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xea9fcae2e50e9c6824e48b0702e36223be20bcb07530f7f3ac91630a8372bbd0","name":"Romanha Marshmallow","registered_at":"2026-06-21T10:40:19Z","symbol":"NIM1900880","token_address":"0x9f2b1c6fca64b8a037fa3a2d1e8123881e07fbda","type":"artist","uuid":"e9f36c98-6cfb-4182-a1ae-ab10f2142729"}
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 0xea9fcae2e50e9c6824e48b0702e36223be20bcb07530f7f3ac91630a8372bbd0. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9f36c98-6cfb-4182-a1ae-ab10f2142729.json and https://artists.proofprofile.net/proofs/artist/e9f36c98-6cfb-4182-a1ae-ab10f2142729.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xea9fcae2e50e9c6824e48b0702e36223be20bcb07530f7f3ac91630a8372bbd0","name":"Romanha Marshmallow","registered_at":"2026-06-21T10:40:19Z","symbol":"NIM1900880","token_address":"0x9f2b1c6fca64b8a037fa3a2d1e8123881e07fbda","type":"artist","uuid":"e9f36c98-6cfb-4182-a1ae-ab10f2142729"}
album: Iyayo
  type: MusicAlbum
  date published: 2022-05-25
album: Hitomebore
  type: MusicAlbum
  date published: 2024-06-19
album: Tobarinodaisankakkei
  type: MusicAlbum
  date published: 2024-07-19
album: Kiminimuchu!!
  type: MusicAlbum
  date published: 2024-09-28
  track: Kiminimuchu!!
    type: MusicRecording
    duration: PT3M53S
    duration ms: 233037
    explicit: false
    by artist: Romanha Marshmallow
    in album: Kiminimuchu!!
      type: MusicAlbum
      date published: 2024-09-28
    isrc code: JPJ222403286
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x63493232f919c63aa6ddf1dafcee91e359587656bb815323e93ee9c107ead48b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958517
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958517
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPJ222403286
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T07:54:29Z
    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 0x63493232f919c63aa6ddf1dafcee91e359587656bb815323e93ee9c107ead48b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPJ222403286.
      date published: 2026-07-18T07:54:29Z
    audio: Kiminimuchu!!
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.044
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.644
      additional property: Energy
        type: PropertyValue
        value: 0.847
      additional property: Speechiness
        type: PropertyValue
        value: 0.079
      additional property: Acousticness
        type: PropertyValue
        value: 0.167
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.521
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.746
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.721
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sansan
  type: MusicAlbum
  date published: 2024-11-01
album: Night Routine
  type: MusicAlbum
  date published: 2025-02-26
album: Rashii
  type: MusicAlbum
  date published: 2025-06-18
album: Natsuyo
  type: MusicAlbum
  date published: 2025-07-19
album: Daikkirai
  type: MusicAlbum
  date published: 2025-10-15