Grace Clark
type: MusicGroup
description: Grace A. Clark is an American signal processing and acoustics researcher, formerly a researcher at the Lawrence Livermore National Laboratory and an engineering consultant through her firm Grace Clark
popularity: 6
followers: 334
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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 0xc5b8150e8a704ee4616679571557fa5ca42c9d2ca21888cb758635ebefb02cce. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08490ba7-fc00-45ab-944a-22f5f58527a0.json and https://artists.proofprofile.net/proofs/artist/08490ba7-fc00-45ab-944a-22f5f58527a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xc5b8150e8a704ee4616679571557fa5ca42c9d2ca21888cb758635ebefb02cce","name":"Grace Clark","registered_at":"2026-06-15T16:29:03Z","symbol":"NIM0765786","token_address":"0x2560d205560db837a76657d7a09ffe10385985ad","type":"artist","uuid":"08490ba7-fc00-45ab-944a-22f5f58527a0"}
album: Untouchable
  type: MusicAlbum
  date published: 2020-06-12
album: It Gets Loud
  type: MusicAlbum
  date published: 2021-03-05
album: Grace Clark (Live)
  type: MusicAlbum
  date published: 2021-06-25
album: Untouchable (Ranec & Cynergii Remix)
  type: MusicAlbum
  date published: 2021-07-15
album: Chicago
  type: MusicAlbum
  date published: 2024-10-17
  track: Chicago
    type: MusicRecording
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    by artist: Grace Clark
    in album: Chicago
      type: MusicAlbum
      date published: 2024-10-17
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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 0x69e838bdafced77558a9fb7fa1b71ed73cb7b4b78140da8d94bc95b91652da44. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/TCAIS2438358.
      date published: 2026-07-12T11:16:12Z
    audio: Chicago
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Key Name
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