Grant Hart
type: MusicGroup
genre: power pop
description: Grant Vernon Hart (March 18, 1961 – September 13, 2017) was an American musician, best known as the drummer and co lead vocalist in the punk rock band Hüsker Dü. After the band's breakup in 1988, he r
popularity: 15
followers: 10676
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-15T11:52:51Z
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album: 2541
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  date published: 1988-10-01
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    by artist: Grant Hart
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      type: MusicAlbum
      date published: 1988-10-01
    genre: power pop
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    additional property: OTSTimestamp
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    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
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      date published: 2026-07-22T06:33:30Z
    audio: 2541
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album: Intolerance
  type: MusicAlbum
  date published: 1989
  track: All of My Senses
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    by artist: Grant Hart
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      type: MusicAlbum
      date published: 1989
    genre: power pop
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    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
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      date published: 2026-07-16T09:16:54Z
    audio: All of My Senses
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  track: Twenty-Five Forty-One
album: All Of My Senses
album: Good News For Modern Man
album: Hot Wax
album: Oeuvrevue
album: So Far From Heaven/Morning Star Single
album: The Argument

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Valence (Positivity)
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Twenty-Five Forty-One
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duration: PT4M47S
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by artist: Grant Hart
in album: Intolerance
  type: MusicAlbum
  date published: 1989
genre: power pop
isrc code: USA371392892
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  date published: 2026-07-04T10:04:33Z
audio: Twenty-Five Forty-One
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Intolerance
type: MusicAlbum
date published: 1989

All Of My Senses
type: MusicAlbum
date published: 1990

Good News For Modern Man
type: MusicAlbum
date published: 1999

Good News For Modern Man
type: MusicAlbum
date published: 1999-11-30

Good News For Modern Man
type: MusicAlbum
date published: 1999-11-30

Good News For Modern Man
type: MusicAlbum
date published: 1999-11-30

Hot Wax
type: MusicAlbum
date published: 2009-10-06

Hot Wax
type: MusicAlbum
date published: 2009-10-06

Intolerance
type: MusicAlbum
date published: 2010-03-09

Oeuvrevue
type: MusicAlbum
date published: 2010-11-26

So Far From Heaven/Morning Star Single
type: MusicAlbum
date published: 2012-04-10

The Argument
type: MusicAlbum
date published: 2013-01-01

The Argument
type: MusicAlbum
date published: 2013-07-22
track: Morningstar
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  duration: PT4M19S
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  by artist: Grant Hart
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    date published: 2013-07-22
  genre: power pop
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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 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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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12726ede865e159010a20228d6dfebe070fc6fe24cc185d08c403204a712f61. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBCEL1300167.
    date published: 2026-07-22T10:01:58Z
  audio: Morningstar
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The Argument
type: MusicAlbum
date published: 2013-07-22