古賀小春 (CV: 小森結梨)
type: MusicGroup
popularity: 5
followers: 65
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x674e4e78183be0b24e620d5ea5acf712af4252913f21462a9e415642eaed1d64
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/db0f546c-62a8-414b-ae35-3d2f4e042a4d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/db0f546c-62a8-414b-ae35-3d2f4e042a4d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/db0f546c-62a8-414b-ae35-3d2f4e042a4d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x674e4e78183be0b24e620d5ea5acf712af4252913f21462a9e415642eaed1d64","name":"古賀小春 (CV: 小森結梨)","registered_at":"2026-06-21T04:35:34Z","symbol":"NIM1821846","token_address":"0x8aacb40fec662ba426ad1f39e15e4600d9512416","type":"artist","uuid":"db0f546c-62a8-414b-ae35-3d2f4e042a4d"}
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 0x674e4e78183be0b24e620d5ea5acf712af4252913f21462a9e415642eaed1d64. 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/db0f546c-62a8-414b-ae35-3d2f4e042a4d.json and https://artists.proofprofile.net/proofs/artist/db0f546c-62a8-414b-ae35-3d2f4e042a4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x674e4e78183be0b24e620d5ea5acf712af4252913f21462a9e415642eaed1d64","name":"古賀小春 (CV: 小森結梨)","registered_at":"2026-06-21T04:35:34Z","symbol":"NIM1821846","token_address":"0x8aacb40fec662ba426ad1f39e15e4600d9512416","type":"artist","uuid":"db0f546c-62a8-414b-ae35-3d2f4e042a4d"}
album: アイム・ア・リトル・プリンセス 〜お星さまにお願い〜 (GAME VERSION)
  type: MusicAlbum
  date published: 2023-06-21
  track: アイム・ア・リトル・プリンセス 〜お星さまにお願い〜 - GAME VERSION
    type: MusicRecording
    duration: PT2M14S
    duration ms: 134350
    explicit: false
    by artist: 古賀小春 (CV: 小森結梨)
    in album: アイム・ア・リトル・プリンセス 〜お星さまにお願い〜 (GAME VERSION)
      type: MusicAlbum
      date published: 2023-06-21
    isrc code: JPCO02307710
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:41:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x50603987f4816399db166c5f4e381112b2ef06df9672d51d4beabcbc4239bee1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO02307710
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0x50603987f4816399db166c5f4e381112b2ef06df9672d51d4beabcbc4239bee1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPCO02307710.
      date published: 2026-07-06T01:25:57Z
    audio: アイム・ア・リトル・プリンセス 〜お星さまにお願い〜 - GAME VERSION
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.187
      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: 0.378
      additional property: Energy
        type: PropertyValue
        value: 0.428
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.722
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.062
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.321
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.494
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major