HEARTS GROW
type: MusicGroup
genre: anime
genre: j-rock
description: Hearts Grow was a Japanese band from Motobu, Okinawa. Their first single Grow!! was released independently (in limited quantities) on 19 April 2006. Hearts Grow made their major label debut on 18 Oct
popularity: 36
followers: 8136
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b4d6527a194afb85064e4a070999d79ca394b8198a92f6cb53e2c22c35814a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67917a60-2743-4c7b-b974-e923e76394df.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67917a60-2743-4c7b-b974-e923e76394df.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/67917a60-2743-4c7b-b974-e923e76394df
additional property: OTSTimestamp
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  value: 2026-06-12T19:24:56Z
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4d6527a194afb85064e4a070999d79ca394b8198a92f6cb53e2c22c35814a3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67917a60-2743-4c7b-b974-e923e76394df.json and https://artists.proofprofile.net/proofs/artist/67917a60-2743-4c7b-b974-e923e76394df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: Road
  type: MusicAlbum
  date published: 2006-10-18
album: Road
  type: MusicAlbum
  date published: 2006-10-18
album: ユラユラ
  type: MusicAlbum
  date published: 2006-12-06
album: ユラユラ
  type: MusicAlbum
  date published: 2006-12-06
album: ひまわり
  type: MusicAlbum
  date published: 2007-06-13
album: ひまわり
  type: MusicAlbum
  date published: 2007-06-13
album: サマーチャンプルー
  type: MusicAlbum
  date published: 2007-08-22
  track: 小さな恋のうた
    type: MusicRecording
    duration: PT4M24S
    duration ms: 264373
    explicit: false
    by artist: HEARTS GROW
    in album: サマーチャンプルー
      type: MusicAlbum
      date published: 2007-08-22
    genre: anime
    genre: j-rock
    isrc code: JPES00701927
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
      value: 2026-07-21T07:08:05+00:00
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      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7401bc1dd417ae7395ea296c581b34eb0f0cff841ba2251dd75757b0ff471cc6
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    additional property: OTSBitcoinBlock
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      value: 958985
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958985
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00701927
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T08:39:15Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7401bc1dd417ae7395ea296c581b34eb0f0cff841ba2251dd75757b0ff471cc6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPES00701927.
      date published: 2026-07-21T08:39:15Z
    audio: 小さな恋のうた
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.032
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.644
      additional property: Energy
        type: PropertyValue
        value: 0.826
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.011
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.048
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.788
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.351
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: かさなる影
  type: MusicAlbum
  date published: 2008
album: かさなる影
  type: MusicAlbum
  date published: 2008-01-23
album: そら
  type: MusicAlbum
  date published: 2008-09-03
album: そら
  type: MusicAlbum
  date published: 2008-09-24
  track: そら
    type: MusicRecording
    duration: PT4M4S
    duration ms: 244000
    explicit: false
    by artist: HEARTS GROW
    in album: そら
      type: MusicAlbum
      date published: 2008-09-24
    genre: anime
    genre: j-rock
    isrc code: JPES00801421
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T19:29:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x185bd3cb14e562fbce6bfdc779d4120e4ec43426f163af2379a4e682696f75b6
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957747
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00801421
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T19:35:06Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185bd3cb14e562fbce6bfdc779d4120e4ec43426f163af2379a4e682696f75b6. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPES00801421.
      date published: 2026-07-12T19:35:06Z
    audio: そら
album: かさなる影 / ユラユラ BESTタッグ
album: Virtuality

そら
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 156.86
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.601
additional property: Energy
  type: PropertyValue
  value: 0.941
additional property: Speechiness
  type: PropertyValue
  value: 0.075
additional property: Acousticness
  type: PropertyValue
  value: 0.01
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.062
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.907
additional property: Loudness (dB)
  type: PropertyValue
  value: -2.25
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

かさなる影 / ユラユラ BESTタッグ
type: MusicAlbum
date published: 2022-03-09

Virtuality
type: MusicAlbum
date published: 2024-02-29