Arkadi Casper
type: MusicGroup
genre: dub techno
popularity: 3
followers: 241
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69b073e6a73c7d30355e9575174970fc8a264145ec39d28c662edccecaf7ca77
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953877
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953877
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/078f67a4-23e0-4c52-bdf8-3a671f376993.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/078f67a4-23e0-4c52-bdf8-3a671f376993.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/078f67a4-23e0-4c52-bdf8-3a671f376993
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:39:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x69b073e6a73c7d30355e9575174970fc8a264145ec39d28c662edccecaf7ca77","name":"Arkadi Casper","registered_at":"2026-06-15T16:09:34Z","symbol":"NIM0761133","token_address":"0x0f1a09991069abc201bcca94ed359511c6f2e532","type":"artist","uuid":"078f67a4-23e0-4c52-bdf8-3a671f376993"}
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 0x69b073e6a73c7d30355e9575174970fc8a264145ec39d28c662edccecaf7ca77. 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/078f67a4-23e0-4c52-bdf8-3a671f376993.json and https://artists.proofprofile.net/proofs/artist/078f67a4-23e0-4c52-bdf8-3a671f376993.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0x69b073e6a73c7d30355e9575174970fc8a264145ec39d28c662edccecaf7ca77","name":"Arkadi Casper","registered_at":"2026-06-15T16:09:34Z","symbol":"NIM0761133","token_address":"0x0f1a09991069abc201bcca94ed359511c6f2e532","type":"artist","uuid":"078f67a4-23e0-4c52-bdf8-3a671f376993"}
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