towa
type: MusicGroup
description: Towa may refer to: Japanese municipalities Tōwa, Fukushima, a town in Fukushima Prefecture Tōwa, Iwate, a town in Iwate Prefecture Tōwa, Kōchi, a village in Kōchi Prefecture Tōwa, Yamaguchi, a forme
popularity: 4
followers: 488
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b93bbd2993cc4ae8f96b3ed59c6b2a29c0150476ecca9b3a06eefed4c0fb8dd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55a62f40-abf2-4010-b96e-9e0a4ad68339.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55a62f40-abf2-4010-b96e-9e0a4ad68339.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55a62f40-abf2-4010-b96e-9e0a4ad68339
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
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 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 0x1b93bbd2993cc4ae8f96b3ed59c6b2a29c0150476ecca9b3a06eefed4c0fb8dd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55a62f40-abf2-4010-b96e-9e0a4ad68339.json and https://artists.proofprofile.net/proofs/artist/55a62f40-abf2-4010-b96e-9e0a4ad68339.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: ZERO
  type: MusicAlbum
  date published: 2021-09-23
album: ZERO
  type: MusicAlbum
  date published: 2021-09-23
album: invitation
  type: MusicAlbum
  date published: 2021-10-31
album: invitation
  type: MusicAlbum
  date published: 2021-10-31
album: Show Time
  type: MusicAlbum
  date published: 2022-04-27
album: Show Time
  type: MusicAlbum
  date published: 2022-04-27
album: brilliant detour (feat. Lucia)
  type: MusicAlbum
  date published: 2023-03-29
album: brilliant detour (feat.Lucia)
  type: MusicAlbum
  date published: 2023-03-29
album: brilliant detour (feat. Lucia)
  type: MusicAlbum
  date published: 2023-03-29
album: 水無月 (feat.Lucia)
  type: MusicAlbum
  date published: 2023-06-23
  track: 水無月 (feat.Lucia)
    type: MusicRecording
    duration: PT4M29S
    duration ms: 269052
    explicit: false
    by artist: towa
    in album: 水無月 (feat.Lucia)
      type: MusicAlbum
      date published: 2023-06-23
    isrc code: TCJPW2352025
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T18:59:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x25b25b788a0088cb36a4cf6b06aca958662077255e93aa3fa1a4bd25159323f5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPW2352025
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x25b25b788a0088cb36a4cf6b06aca958662077255e93aa3fa1a4bd25159323f5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPW2352025.
      date published: 2026-07-03T19:59:51Z
    audio: 水無月 (feat.Lucia)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.014
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.308
      additional property: Energy
        type: PropertyValue
        value: 0.524
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.769
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.472
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.706
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Minazuki (feat. Lucia)
  type: MusicAlbum
  date published: 2023-06-25
album: 水無月 (feat. Lucia)
  type: MusicAlbum
  date published: 2023-06-25
album: cold rain (feat. Nqsi)
  type: MusicAlbum
  date published: 2023-09-09
album: cold rain (feat. Nqsi)
  type: MusicAlbum
  date published: 2023-09-09
album: huh?
  type: MusicAlbum
  date published: 2024-01-01