Umbra Vitae
type: MusicGroup
genre: death metal
genre: grindcore
description: Umbra Vitae is an American death metal supergroup formed in 2020. The band features vocalist Jacob Bannon (Converge), guitarists Mike McKenzie (The Red Chord) and Sean Martin (Twitching Tongues, Hateb
popularity: 13
followers: 13081
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additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2001b418ee0b6ffb650c46025dd91aaddd9ed7130b7e271a46e92725f2354abd. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b83f66d7-0511-4ee0-b534-ffe619beee8d.json and https://artists.proofprofile.net/proofs/artist/b83f66d7-0511-4ee0-b534-ffe619beee8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:21:23Z
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album: Return to Zero
  type: MusicAlbum
  date published: 2020-03-31
album: Mantra of Madness
  type: MusicAlbum
  date published: 2020-04-15
album: Shadow of Life
  type: MusicAlbum
  date published: 2020-05-01
album: Belief Is Obsolete
  type: MusicAlbum
  date published: 2024-04-02
album: Velvet Black
  type: MusicAlbum
  date published: 2024-04-30
album: Anti-Spirit Machine
  type: MusicAlbum
  date published: 2024-05-21
album: Light Of Death
  type: MusicAlbum
  date published: 2024-06-07
  track: Leave Of Absence
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    by artist: Umbra Vitae
    in album: Light Of Death
      type: MusicAlbum
      date published: 2024-06-07
    genre: death metal
    genre: grindcore
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb71bbd2e9bbc8f321ce663f9b2559b1a8a0b533afd5096b579318b8d9bb97c2. 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/QZ22D2400001.
      date published: 2026-07-21T08:39:15Z
    audio: Leave Of Absence
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      additional property: Tempo (BPM)
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
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  track: Belief Is Obsolete
    type: MusicRecording
    duration: PT2M16S
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    explicit: true
    by artist: Umbra Vitae
    in album: Light Of Death
      type: MusicAlbum
      date published: 2024-06-07
    genre: death metal
    genre: grindcore
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7193a8ae90489e69f608fb6af38ee7a1d748c426a3929b2b904cc70af4ef3e1d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZ22D2400002.
      date published: 2026-07-18T03:34:53Z
    audio: Belief Is Obsolete
      type: AudioObject
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      additional property: Danceability
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      additional property: Valence (Positivity)
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      additional property: Mode Name
  track: Anti-Spirit Machine

Time Signature
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value: 4

Danceability
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value: 0.121

Energy
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value: 0.987

Speechiness
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value: 0.097

Acousticness
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value: 0

Instrumentalness
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value: 0.079

Liveness
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value: 0.058

Valence (Positivity)
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value: 0.132

Loudness (dB)
type: PropertyValue
value: -3.621

Key Name
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value: G

Mode Name
type: PropertyValue
value: Major

Anti-Spirit Machine
type: MusicRecording
duration: PT3M40S
duration ms: 220750
explicit: false
by artist: Umbra Vitae
in album: Light Of Death
  type: MusicAlbum
  date published: 2024-06-07
genre: death metal
genre: grindcore
isrc code: QZ22D2400004
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additional property: OTSTimestamp
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  value: 2026-07-05T18:48:28Z
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 0xf9fea18f22e5fa363a39a47da34167ab578a759156f59c7455156bc1bf967cb9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ22D2400004.
  date published: 2026-07-05T18:48:28Z
audio: Anti-Spirit Machine
  type: AudioObject
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  additional property: Speechiness
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  additional property: Acousticness
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