David Caspar
type: MusicGroup
popularity: 4
followers: 858
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09f420d2d6aed3027cddb69063d30690b39f3a2a2e1853800abbc633e9f1a6cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7965f5c-1899-4cbb-95d9-c3fd58170d40.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7965f5c-1899-4cbb-95d9-c3fd58170d40.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7965f5c-1899-4cbb-95d9-c3fd58170d40
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x09f420d2d6aed3027cddb69063d30690b39f3a2a2e1853800abbc633e9f1a6cc","name":"David Caspar","registered_at":"2026-06-20T21:33:20Z","symbol":"NIM1720876","token_address":"0x5046a68edef7c00270a3b8736119fd167b1ff12a","type":"artist","uuid":"c7965f5c-1899-4cbb-95d9-c3fd58170d40"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f420d2d6aed3027cddb69063d30690b39f3a2a2e1853800abbc633e9f1a6cc. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7965f5c-1899-4cbb-95d9-c3fd58170d40.json and https://artists.proofprofile.net/proofs/artist/c7965f5c-1899-4cbb-95d9-c3fd58170d40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0x09f420d2d6aed3027cddb69063d30690b39f3a2a2e1853800abbc633e9f1a6cc","name":"David Caspar","registered_at":"2026-06-20T21:33:20Z","symbol":"NIM1720876","token_address":"0x5046a68edef7c00270a3b8736119fd167b1ff12a","type":"artist","uuid":"c7965f5c-1899-4cbb-95d9-c3fd58170d40"}
album: Among the Breakers
  type: MusicAlbum
  date published: 2022-01-07
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  type: MusicAlbum
  date published: 2023-11-24
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  type: MusicAlbum
  date published: 2023-09-13
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  type: MusicAlbum
  date published: 2023-06-13
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  type: MusicAlbum
  date published: 2023-02-14
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  type: MusicAlbum
  date published: 2021-10-08
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  type: MusicAlbum
  date published: 2021-08-20
album: The End
  type: MusicAlbum
  date published: 2021-06-25