角銅 真実
type: MusicGroup
popularity: 4
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab854a0d7e66ff6da3d7d6dcbf2b30e24c655fd1f056e4fee0f652b4ef2e8145
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954008
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954008
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3343e86a-2f45-44ff-a6b3-54eebef0dda8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3343e86a-2f45-44ff-a6b3-54eebef0dda8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3343e86a-2f45-44ff-a6b3-54eebef0dda8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:31:27Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xab854a0d7e66ff6da3d7d6dcbf2b30e24c655fd1f056e4fee0f652b4ef2e8145","name":"角銅 真実","registered_at":"2026-06-16T07:26:26Z","symbol":"NIM0979997","token_address":"0x9722bd9d83e598d9fa3c17b741bf80ebbb8c1579","type":"artist","uuid":"3343e86a-2f45-44ff-a6b3-54eebef0dda8"}
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 0xab854a0d7e66ff6da3d7d6dcbf2b30e24c655fd1f056e4fee0f652b4ef2e8145. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3343e86a-2f45-44ff-a6b3-54eebef0dda8.json and https://artists.proofprofile.net/proofs/artist/3343e86a-2f45-44ff-a6b3-54eebef0dda8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xab854a0d7e66ff6da3d7d6dcbf2b30e24c655fd1f056e4fee0f652b4ef2e8145","name":"角銅 真実","registered_at":"2026-06-16T07:26:26Z","symbol":"NIM0979997","token_address":"0x9722bd9d83e598d9fa3c17b741bf80ebbb8c1579","type":"artist","uuid":"3343e86a-2f45-44ff-a6b3-54eebef0dda8"}
track: CHOO CHOO Gatagoto

CHOO CHOO Gatagoto
type: MusicRecording
duration: PT4M24S
duration ms: 264644
explicit: false
by artist: Haruomi Hosono
by artist: kukuku
by artist: 角銅 真実
by artist: Ikuko Harada
in album: Hosono House Revisited
  type: MusicAlbum
  date published: 2024-11-01
isrc code: US2S72492009
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T23:36:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d3253929ef67a250a3a06ac5d20eadfc03de0fd76293f95dd6f1ed8913f362b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2S72492009
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3253929ef67a250a3a06ac5d20eadfc03de0fd76293f95dd6f1ed8913f362b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S72492009.
  date published: 2026-07-02T03:30:09Z
audio: CHOO CHOO Gatagoto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.292
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.409
  additional property: Energy
    type: PropertyValue
    value: 0.222
  additional property: Speechiness
    type: PropertyValue
    value: 0.086
  additional property: Acousticness
    type: PropertyValue
    value: 0.928
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.163
  additional property: Liveness
    type: PropertyValue
    value: 0.129
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.264
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.325
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major