Taeji Sawai
type: MusicGroup
genre: experimental
popularity: 7
followers: 310
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1ccc3611418e300da988eac8d747c6c1f14569bdf62f057843054bc25c67395
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953846
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953846
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/013c4ebf-6561-4d0c-8a59-63e25f9db689.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/013c4ebf-6561-4d0c-8a59-63e25f9db689.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/013c4ebf-6561-4d0c-8a59-63e25f9db689
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:48:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb1ccc3611418e300da988eac8d747c6c1f14569bdf62f057843054bc25c67395","name":"Taeji Sawai","registered_at":"2026-06-15T13:55:45Z","symbol":"NIM0729186","token_address":"0xfdf98d18fc05882b6dd8e255b91493a3e36f2d90","type":"artist","uuid":"013c4ebf-6561-4d0c-8a59-63e25f9db689"}
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 0xb1ccc3611418e300da988eac8d747c6c1f14569bdf62f057843054bc25c67395. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/013c4ebf-6561-4d0c-8a59-63e25f9db689.json and https://artists.proofprofile.net/proofs/artist/013c4ebf-6561-4d0c-8a59-63e25f9db689.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xb1ccc3611418e300da988eac8d747c6c1f14569bdf62f057843054bc25c67395","name":"Taeji Sawai","registered_at":"2026-06-15T13:55:45Z","symbol":"NIM0729186","token_address":"0xfdf98d18fc05882b6dd8e255b91493a3e36f2d90","type":"artist","uuid":"013c4ebf-6561-4d0c-8a59-63e25f9db689"}
album: As Planetary Dreams
  type: MusicAlbum
  date published: 2024-08-09
  track: S_lowl Melancolic
    type: MusicRecording
    duration: PT3M15S
    duration ms: 195000
    explicit: false
    by artist: Taeji Sawai
    in album: As Planetary Dreams
      type: MusicAlbum
      date published: 2024-08-09
    genre: experimental
    isrc code: JPS802356190
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-11T20:52:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc1396c070aae3972d7143b1400a0a7f428892994c76fa5f885451dae5fc4b4cd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957611
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957611
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS802356190
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-11T21:33:50Z
    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 0xc1396c070aae3972d7143b1400a0a7f428892994c76fa5f885451dae5fc4b4cd. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/JPS802356190.
      date published: 2026-07-11T21:33:50Z
    audio: S_lowl Melancolic
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.263
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.167
      additional property: Energy
        type: PropertyValue
        value: 0.446
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.914
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.17
      additional property: Liveness
        type: PropertyValue
        value: 0.105
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.36
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.082
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major