Black Fast
type: MusicGroup
genre: speed metal
genre: thrash metal
description: thumb|Jesus Tempted in the Wilderness (Jésus tenté dans le désert), James Tissot, Brooklyn Museum A Black Fast, also known as a strict fast, is a form of early Christian fasting. Those undertaking a B
popularity: 12
followers: 9605
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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 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
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album: Starving out the Light
  type: MusicAlbum
  date published: 2013-08-20
album: To Propagate the Void
  type: MusicAlbum
  date published: 2015-06-09
album: To Propagate the Void
  type: MusicAlbum
  date published: 2015-06-09
album: To Propagate the Void
  type: MusicAlbum
  date published: 2015-06-09
album: I Conspire
  type: MusicAlbum
  date published: 2015-07-10
album: I Conspire
  type: MusicAlbum
  date published: 2015-07-10
album: I Conspire
  type: MusicAlbum
  date published: 2015-07-10
album: The Coming Swarm
  type: MusicAlbum
  date published: 2015-07-24
album: The Coming Swarm
  type: MusicAlbum
  date published: 2015-07-24
album: Terms of Surrender
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  date published: 2015-08-07
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    genre: speed metal
    genre: thrash metal
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-17T12:18:07Z
    audio: The Keep
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  track: To Propagate the Void
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    in album: Terms of Surrender
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      date published: 2015-08-07
    genre: speed metal
    genre: thrash metal
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-06T01:25:57Z
    audio: To Propagate the Void
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  track: The Coming Swarm
  track: I Conspire
album: Thunder And Lightning (Thin Lizzy Cover)
album: Cloak of Lies
album: Silhouette Usurper
album: Husk
album: Spectre of Ruin

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value: 0.818

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Loudness (dB)
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The Coming Swarm
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duration: PT6M45S
duration ms: 405546
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by artist: Black Fast
in album: Terms of Surrender
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  date published: 2015-08-07
genre: speed metal
genre: thrash metal
isrc code: USKO11500157
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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 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
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  date published: 2026-07-22T11:35:32Z
audio: The Coming Swarm
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I Conspire
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duration: PT5M50S
duration ms: 350373
explicit: false
by artist: Black Fast
in album: Terms of Surrender
  type: MusicAlbum
  date published: 2015-08-07
genre: speed metal
genre: thrash metal
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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 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
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  date published: 2026-07-19T15:59:31Z
audio: I Conspire
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Terms of Surrender
type: MusicAlbum
date published: 2015-08-07

Terms of Surrender
type: MusicAlbum
date published: 2015-08-07

Thunder And Lightning (Thin Lizzy Cover)
type: MusicAlbum
date published: 2017-04-28

Thunder And Lightning (Thin Lizzy Cover)
type: MusicAlbum
date published: 2017-04-28

Thunder And Lightning (Thin Lizzy Cover)
type: MusicAlbum
date published: 2017-04-28

Cloak of Lies
type: MusicAlbum
date published: 2018-05-07

Cloak of Lies
type: MusicAlbum
date published: 2018-05-07

Cloak of Lies
type: MusicAlbum
date published: 2018-05-07

Silhouette Usurper
type: MusicAlbum
date published: 2018-06-08

Silhouette Usurper
type: MusicAlbum
date published: 2018-06-08

Silhouette Usurper
type: MusicAlbum
date published: 2018-06-08

Husk
type: MusicAlbum
date published: 2018-07-02

Husk
type: MusicAlbum
date published: 2018-07-02

Husk
type: MusicAlbum
date published: 2018-07-02

Spectre of Ruin
type: MusicAlbum
date published: 2018-07-13

Spectre of Ruin
type: MusicAlbum
date published: 2018-07-13

Spectre of Ruin
type: MusicAlbum
date published: 2018-07-13