keyheart
type: MusicGroup
genre: hyperpop
popularity: 12
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2318f3249bdabcf70ea5f34e6724089284d802c3aa61a8863bc4e00fd3d9c0f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86fcf6bd-0f2a-4598-b9e5-533fce046eeb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86fcf6bd-0f2a-4598-b9e5-533fce046eeb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/86fcf6bd-0f2a-4598-b9e5-533fce046eeb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:05:33Z
additional property: OTSCanonicalRecord
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 0x2318f3249bdabcf70ea5f34e6724089284d802c3aa61a8863bc4e00fd3d9c0f6. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86fcf6bd-0f2a-4598-b9e5-533fce046eeb.json and https://artists.proofprofile.net/proofs/artist/86fcf6bd-0f2a-4598-b9e5-533fce046eeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:05:33Z
album: NO EMOTIONS (DELUXE)
  type: MusicAlbum
  date published: 2023-12-24
  track: Мне Холодно
    type: MusicRecording
    duration: PT2M24S
    duration ms: 144000
    explicit: false
    by artist: keyheart
    in album: NO EMOTIONS (DELUXE)
      type: MusicAlbum
      date published: 2023-12-24
    genre: hyperpop
    isrc code: CAHQJ2568721
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T20:36:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe022106bcc8a86b1697519445494643679adbd385122b92289c12429024bfe6d
    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/CAHQJ2568721
    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 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 0xe022106bcc8a86b1697519445494643679adbd385122b92289c12429024bfe6d. 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/CAHQJ2568721.
      date published: 2026-07-06T01:25:57Z
    audio: Мне Холодно
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.019
      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: 0.705
      additional property: Energy
        type: PropertyValue
        value: 0.354
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.43
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.079
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.057
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.785
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Перепуганы
    type: MusicRecording
    duration: PT2M14S
    duration ms: 134769
    explicit: true
    by artist: keyheart
    in album: NO EMOTIONS (DELUXE)
      type: MusicAlbum
      date published: 2023-12-24
    genre: hyperpop
    isrc code: CAHQJ2568727
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-02T21:06:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x23eaff1349a7c97a71e6d3dc4f0979ac5ca0989177c631e8acd353441a2235a7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956402
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956402
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2568727
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T22:05:07Z
    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 0x23eaff1349a7c97a71e6d3dc4f0979ac5ca0989177c631e8acd353441a2235a7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/CAHQJ2568727.
      date published: 2026-07-02T22:05:07Z
    audio: Перепуганы
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.898
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.597
      additional property: Energy
        type: PropertyValue
        value: 0.632
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.712
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.734
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.9
      additional property: Key Name
      additional property: Mode Name
album: ФЛОРА И ФАУНА
album: WEALWAYSRAGE!
album: PLUG
album: Witcher
album: yluvey
album: ЮНЕСКО
album: АССОРТИ
album: Grant

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

ФЛОРА И ФАУНА
type: MusicAlbum
date published: 2024-08-19

WEALWAYSRAGE!
type: MusicAlbum
date published: 2024-09-06

PLUG
type: MusicAlbum
date published: 2024-10-25

Witcher
type: MusicAlbum
date published: 2024-12-06

yluvey
type: MusicAlbum
date published: 2024-12-25

ЮНЕСКО
type: MusicAlbum
date published: 2024-12-27

АССОРТИ
type: MusicAlbum
date published: 2025-05-02

Grant
type: MusicAlbum
date published: 2025-08-01