SPRINGMAN
type: MusicGroup
popularity: 7
followers: 1139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x337c18f40302fc107f23a85079c73f9d4fd05170a837ee68a55a7f1bd40098ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc92f5a5-a75f-4e38-9b2b-c5a8179c8378.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc92f5a5-a75f-4e38-9b2b-c5a8179c8378.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bc92f5a5-a75f-4e38-9b2b-c5a8179c8378
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
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 0x337c18f40302fc107f23a85079c73f9d4fd05170a837ee68a55a7f1bd40098ff. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc92f5a5-a75f-4e38-9b2b-c5a8179c8378.json and https://artists.proofprofile.net/proofs/artist/bc92f5a5-a75f-4e38-9b2b-c5a8179c8378.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
album: さよなら北千住
  type: MusicAlbum
  date published: 2022-10-26
album: still writing...
  type: MusicAlbum
  date published: 2023-01-18
album: カポック
  type: MusicAlbum
  date published: 2023-03-29
album: カポック
  type: MusicAlbum
  date published: 2023-03-29
album: いないふり
  type: MusicAlbum
  date published: 2023-04-12
album: とりとめもなく
  type: MusicAlbum
  date published: 2023-05-17
album: 勤労
  type: MusicAlbum
  date published: 2023-07-19
album: ポットパイ
  type: MusicAlbum
  date published: 2023-11-08
album: 右にならえ
  type: MusicAlbum
  date published: 2024-03-27
album: SCREW
  type: MusicAlbum
  date published: 2024-04-10
album: wander?
  type: MusicAlbum
  date published: 2025-07-16
album: またねだね
  type: MusicAlbum
  date published: 2025-09-10
album: シャーベットみたいな今夜は
  type: MusicAlbum
  date published: 2025-10-22
  track: シャーベットみたいな今夜は
    type: MusicRecording
    duration: PT2M32S
    duration ms: 152572
    explicit: false
    by artist: SPRINGMAN
    in album: シャーベットみたいな今夜は
      type: MusicAlbum
      date published: 2025-10-22
    isrc code: JPZ922507446
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T09:47:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x35b2d9c2e1d0c42d27f32f11a7f4722cc3fee94801333772b6d0e124a86aabe3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958543
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958543
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922507446
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T11:58:44Z
    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 0x35b2d9c2e1d0c42d27f32f11a7f4722cc3fee94801333772b6d0e124a86aabe3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPZ922507446.
      date published: 2026-07-18T11:58:44Z
    audio: シャーベットみたいな今夜は
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.965
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.867
      additional property: Energy
        type: PropertyValue
        value: 0.658
      additional property: Speechiness
        type: PropertyValue
        value: 0.078
      additional property: Acousticness
        type: PropertyValue
        value: 0.287
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.174
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.735
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.817
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor