HellHeart
type: MusicGroup
genre: melodic metal
popularity: 14
followers: 4279
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfe246797e73a246640318c7d1cc428045f191a83b3f31df20e395bb0d6312b9e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953733
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953733
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/96efcf18-3742-4e86-b08a-5442bdf67aff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/96efcf18-3742-4e86-b08a-5442bdf67aff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/96efcf18-3742-4e86-b08a-5442bdf67aff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T03:12:39Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe246797e73a246640318c7d1cc428045f191a83b3f31df20e395bb0d6312b9e. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96efcf18-3742-4e86-b08a-5442bdf67aff.json and https://artists.proofprofile.net/proofs/artist/96efcf18-3742-4e86-b08a-5442bdf67aff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T03:12:39Z
album: Where's Your Heart At
  type: MusicAlbum
  date published: 2017-10-31
album: Where's Your Heart At
  type: MusicAlbum
  date published: 2017-10-31
album: This Love
  type: MusicAlbum
  date published: 2018-08-20
album: A Decade in Disaster
  type: MusicAlbum
  date published: 2019-01-23
album: Malice
  type: MusicAlbum
  date published: 2019-04-16
album: Family
  type: MusicAlbum
  date published: 2019-09-13
album: Bloodletter
  type: MusicAlbum
  date published: 2020-02-14
album: Second Wind
  type: MusicAlbum
  date published: 2021-07-23
album: When Monuments Fall
  type: MusicAlbum
  date published: 2021-08-27
album: How You Remind Me
  type: MusicAlbum
  date published: 2022-04-01
album: Backslider
  type: MusicAlbum
  date published: 2022-05-06
album: Pomeranian Deathmatch
  type: MusicAlbum
  date published: 2022-06-10
album: Siren
  type: MusicAlbum
  date published: 2022-09-30
album: Pitchfork Mafia
  type: MusicAlbum
  date published: 2022-11-25
album: The End of Us
  type: MusicAlbum
  date published: 2023-02-14
album: Bloodletter
  type: MusicAlbum
  date published: 2023-04-07
album: King's Cup
  type: MusicAlbum
  date published: 2023-07-21
album: Defiant
  type: MusicAlbum
  date published: 2023-11-10
album: When Monuments Fall
  type: MusicAlbum
  date published: 2024-02-09
album: Second Wind
  type: MusicAlbum
  date published: 2024-02-09
  track: The End of Us
    type: MusicRecording
    duration: PT4M16S
    duration ms: 256122
    explicit: false
    by artist: HellHeart
    in album: Second Wind
      type: MusicAlbum
      date published: 2024-02-09
    genre: melodic metal
    isrc code: QZFYY2330033
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T00:21:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf24b272d6679d560d00b3e7e118cd5a4253cf68e29ea3fec09de8264ad738016
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958224
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958224
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2330033
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T02:28:43Z
    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 0xf24b272d6679d560d00b3e7e118cd5a4253cf68e29ea3fec09de8264ad738016. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYY2330033.
      date published: 2026-07-16T02:28:43Z
    audio: The End of Us
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.001
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.426
      additional property: Energy
        type: PropertyValue
        value: 0.973
      additional property: Speechiness
        type: PropertyValue
        value: 0.086
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.027
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.225
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.094
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Backslider
    type: MusicRecording
    duration: PT3M18S
    duration ms: 198656
    explicit: false
    by artist: HellHeart
    in album: Second Wind
      type: MusicAlbum
      date published: 2024-02-09
    genre: melodic metal
    isrc code: QZHN72269042
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T23:36:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0d6ff35b3f3e162379eaaef1103a2e14005dbd94e99c059b81ea799620e72c6d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Backslider
album: There Will Be Violence
album: Suffer Well
album: The Burden We Bear
album: Wraith
album: Pillars

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956738

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956738

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72269042

OTSTimestamp
type: PropertyValue
value: 2026-07-05T04:47:21Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6ff35b3f3e162379eaaef1103a2e14005dbd94e99c059b81ea799620e72c6d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN72269042.
date published: 2026-07-05T04:47:21Z

Backslider
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 119.981
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.599
additional property: Energy
  type: PropertyValue
  value: 0.988
additional property: Speechiness
  type: PropertyValue
  value: 0.15
additional property: Acousticness
  type: PropertyValue
  value: 0.001
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.234
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.207
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.868
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Major

There Will Be Violence
type: MusicAlbum
date published: 2024-02-16

Family
type: MusicAlbum
date published: 2024-04-26

Malice
type: MusicAlbum
date published: 2024-06-28

Suffer Well
type: MusicAlbum
date published: 2024-09-20

The Burden We Bear
type: MusicAlbum
date published: 2025-03-07

Wraith
type: MusicAlbum
date published: 2025-05-23

Pillars
type: MusicAlbum
date published: 2025-08-22