Katja
type: MusicGroup
description: Katja is a feminine given name. In Germany, the Netherlands, Flanders, and Scandinavia, it is a pet form of Katherine. People with the first name Katja Actresses Katja Flint (born 1959), German a
popularity: 5
followers: 244
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41716af2dd6c34e15f04a825214f05d4b516462352ce3ea650da8b1ab82a52d. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23ccafe7-480a-4a57-9955-540392d3324b.json and https://artists.proofprofile.net/proofs/artist/23ccafe7-480a-4a57-9955-540392d3324b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
album: High
  type: MusicAlbum
  date published: 2018-07-28
album: Entropy
  type: MusicAlbum
  date published: 2019-01-25
album: LadyMoon
  type: MusicAlbum
  date published: 2020-10-01
album: Eye
  type: MusicAlbum
  date published: 2021-08-13
album: Eye (Trench Remix)
  type: MusicAlbum
  date published: 2021-08-16
album: Hurt
  type: MusicAlbum
  date published: 2023-08-18
album: Healing
  type: MusicAlbum
  date published: 2024-11-08
track: Shadow Work

Shadow Work
type: MusicRecording
duration: PT4M10S
duration ms: 250290
explicit: false
by artist: Kromestar
by artist: Katja
in album: Shadow Work
  type: MusicAlbum
  date published: 2021-10-22
popularity: 21
genre: classic-dubstep
genre: deep-dubstep
genre: purple-sound
isrc code: GBLV62103546
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b30919f65bcc064c8d47c6b4c6c3a4c989decdc26fab520b9697fa595fc766. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLV62103546.
  date published: 2026-07-02T03:55:08Z
audio: Shadow Work
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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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
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    value: -12.265
  additional property: Key Name
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    value: A
  additional property: Mode Name
    type: PropertyValue
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