Halvar
type: MusicGroup
genre: thrash metal
popularity: 6
followers: 765
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa7385b992dfa9357fa4a5ee8b45e14a568fc92b9de62984768cbc0f55160e9e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f59e6ea-371f-4274-a736-c6aa8a0aa67e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f59e6ea-371f-4274-a736-c6aa8a0aa67e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f59e6ea-371f-4274-a736-c6aa8a0aa67e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0xfa7385b992dfa9357fa4a5ee8b45e14a568fc92b9de62984768cbc0f55160e9e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f59e6ea-371f-4274-a736-c6aa8a0aa67e.json and https://artists.proofprofile.net/proofs/artist/6f59e6ea-371f-4274-a736-c6aa8a0aa67e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Welcome to Reality
  type: MusicAlbum
  date published: 2019-11-14
album: Welcome to Reality
  type: MusicAlbum
  date published: 2019-11-14
album: Sadistic Euphoria
  type: MusicAlbum
  date published: 2019-11-30
album: Be the Wolf; Kill the Lamb
  type: MusicAlbum
  date published: 2019-11-30
album: Ancestral Communication
  type: MusicAlbum
  date published: 2020-03-28
album: Baptised in Blasphemy
  type: MusicAlbum
  date published: 2021-05-12
album: Back for Blood
  type: MusicAlbum
  date published: 2022-10-26
album: Judgement Exempt
  type: MusicAlbum
  date published: 2023-09-22
album: The New Age Genocide
  type: MusicAlbum
  date published: 2023-10-20
album: State Of The Nation
  type: MusicAlbum
  date published: 2023-11-03
album: State Of The Nation
  type: MusicAlbum
  date published: 2023-11-10
album: State Of The Nation
  type: MusicAlbum
  date published: 2023-11-10
album: Into The Pit
  type: MusicAlbum
  date published: 2025-03-14
  track: Into The Pit
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206588
    explicit: true
    by artist: Halvar
    in album: Into The Pit
      type: MusicAlbum
      date published: 2025-03-14
    genre: thrash metal
    isrc code: QM6MZ2509773
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T19:41:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x710d5efd9ccac88c95adf70c6c8a99cede677fa277bf99d80a4388250d505c41
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958931
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958931
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2509773
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    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 0x710d5efd9ccac88c95adf70c6c8a99cede677fa277bf99d80a4388250d505c41. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ2509773.
      date published: 2026-07-20T21:15:01Z
    audio: Into The Pit
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.934
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.205
      additional property: Energy
        type: PropertyValue
        value: 0.979
      additional property: Speechiness
        type: PropertyValue
        value: 0.17
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.02
      additional property: Liveness
        type: PropertyValue
        value: 0.346
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.517
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.172
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Into The Pit
  type: MusicAlbum
  date published: 2025-03-14
album: Carry The Flag
  type: MusicAlbum
  date published: 2025-07-21