Jack Grace
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description: Jack Grace (8 February 1884 – 9 March 1915) was an Irish Gaelic footballer and hurler. His championship career as a dual player with the Dublin senior teams spanned twelve seasons from 1901 until 1912
popularity: 15
followers: 3759
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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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album: Hills
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  date published: 2015-06-22
album: All Lost
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  date published: 2016-08-26
album: All Lost
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  date published: 2016-10-21
album: River
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      date published: 2016-10-27
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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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      date published: 2026-07-14T20:39:42Z
    audio: All Lost
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album: River
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  date published: 2016-10-27
album: River
  type: MusicAlbum
  date published: 2016-10-28
album: River
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album: BE4UGO
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album: BE4UGO
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album: BE4UGO (Remixes)
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album: BE4UGO (Remixes)
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album: us
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album: us
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album: us (Christopher Port Remix)
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album: row me home
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album: row me home
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album: downstate
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  date published: 2018-03-23
album: downstate (Ara Koufax Remix)
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      date published: 2018-04-06
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    subject of: OpenTimestamps Proof of Existence
    audio: downstate - Ara Koufax Remix
album: IF I TREMBLE
album: owe u one
album: Slow Burn
album: A Ribbon
album: Daydreaming
album: The Pavement
album: Redemption
album: Turn To Something You Know

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OTSTimestamp
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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

OpenTimestamps Proof of Existence
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encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a1457044d80943e5452479180d8ca54fbb145f41eca69c58a0a4804c5638d. 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/AUNE31800023.
date published: 2026-07-05T18:48:28Z

downstate - Ara Koufax Remix
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IF I TREMBLE
type: MusicAlbum
date published: 2018-04-13

IF I TREMBLE
type: MusicAlbum
date published: 2018-04-13

owe u one
type: MusicAlbum
date published: 2018-09-28

Slow Burn
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date published: 2019-04-18
track: Slow Burn
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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 0xa06655763e07059c738f75243528d88bf26416242c62eabc419166e8794dc505. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/AUNE31900020.
    date published: 2026-07-14T19:14:42Z
  audio: Slow Burn
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A Ribbon
type: MusicAlbum
date published: 2020-06-26

Daydreaming
type: MusicAlbum
date published: 2020-09-18

The Pavement
type: MusicAlbum
date published: 2020-12-04

Redemption
type: MusicAlbum
date published: 2021-05-20

Turn To Something You Know
type: MusicAlbum
date published: 2021-07-02
track: Daydreaming
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  by artist: Jack Grace
  in album: Turn To Something You Know
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    date published: 2021-07-02
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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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    date published: 2026-07-16T20:12:32Z
  audio: Daydreaming
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Turn To Something You Know
type: MusicAlbum
date published: 2021-09-03