Lars Kahn
type: MusicGroup
popularity: 2
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ba9bc1403d851c119e94b148ead8811807a9640424014e4043048d482e63d2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ba9bc1403d851c119e94b148ead8811807a9640424014e4043048d482e63d2c","name":"Lars Kahn","registered_at":"2026-06-21T05:12:01Z","symbol":"NIM1829599","token_address":"0x308e471d5e1cc8ec3dac479e72053fed5f1e5f86","type":"artist","uuid":"dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba9bc1403d851c119e94b148ead8811807a9640424014e4043048d482e63d2c. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217.json and https://artists.proofprofile.net/proofs/artist/dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x6ba9bc1403d851c119e94b148ead8811807a9640424014e4043048d482e63d2c","name":"Lars Kahn","registered_at":"2026-06-21T05:12:01Z","symbol":"NIM1829599","token_address":"0x308e471d5e1cc8ec3dac479e72053fed5f1e5f86","type":"artist","uuid":"dcc1ce1e-3bbb-42ff-b302-4e2f5a0ac217"}
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  type: MusicAlbum
  date published: 2021-08-20
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  type: MusicAlbum
  date published: 2021-11-01
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  type: MusicAlbum
  date published: 2022-06-13
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  type: MusicAlbum
  date published: 2023-08-21
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  type: MusicAlbum
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