楓
type: MusicGroup
genre: j-rap
popularity: 10
followers: 507
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x257a574a8d7c25148ad3419c208abbc5baa23fe194ec38378c19f976d5978646
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12c8bcfc-6aa8-45dc-9722-387c1cf27798.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12c8bcfc-6aa8-45dc-9722-387c1cf27798.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12c8bcfc-6aa8-45dc-9722-387c1cf27798
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x257a574a8d7c25148ad3419c208abbc5baa23fe194ec38378c19f976d5978646","name":"楓","registered_at":"2026-06-15T20:19:12Z","symbol":"NIM0820694","token_address":"0x7f99836f5c7f5e0145bf443833f061ec8e969cb6","type":"artist","uuid":"12c8bcfc-6aa8-45dc-9722-387c1cf27798"}
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 0x257a574a8d7c25148ad3419c208abbc5baa23fe194ec38378c19f976d5978646. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12c8bcfc-6aa8-45dc-9722-387c1cf27798.json and https://artists.proofprofile.net/proofs/artist/12c8bcfc-6aa8-45dc-9722-387c1cf27798.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x257a574a8d7c25148ad3419c208abbc5baa23fe194ec38378c19f976d5978646","name":"楓","registered_at":"2026-06-15T20:19:12Z","symbol":"NIM0820694","token_address":"0x7f99836f5c7f5e0145bf443833f061ec8e969cb6","type":"artist","uuid":"12c8bcfc-6aa8-45dc-9722-387c1cf27798"}
album: City Kids
  type: MusicAlbum
  date published: 2023-04-03
album: Legit Soul
  type: MusicAlbum
  date published: 2023-05-31
album: Common
  type: MusicAlbum
  date published: 2024-02-29
album: Vortex
  type: MusicAlbum
  date published: 2024-03-27
album: Inside
  type: MusicAlbum
  date published: 2025-09-01
  track: Inside
    type: MusicRecording
    duration: PT4M55S
    duration ms: 295673
    explicit: true
    by artist: 楓
    in album: Inside
      type: MusicAlbum
      date published: 2025-09-01
    genre: j-rap
    isrc code: TCJPL2518585
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T02:50:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3c067cae4294e94142e723ab37ecc7391f45f32b36c89deb9f508782de6e2214
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPL2518585
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x3c067cae4294e94142e723ab37ecc7391f45f32b36c89deb9f508782de6e2214. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPL2518585.
      date published: 2026-07-06T06:56:49Z
    audio: Inside
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.026
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.687
      additional property: Energy
        type: PropertyValue
        value: 0.836
      additional property: Speechiness
        type: PropertyValue
        value: 0.31
      additional property: Acousticness
        type: PropertyValue
        value: 0.178
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.668
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.858
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Blood
  type: MusicAlbum
  date published: 2025-10-15