Марксэн
type: MusicGroup
genre: synthwave
popularity: 4
followers: 579
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd65e94a28a98195a915288f8cec0868164585ab185878d9c4c4579e52bd8e79
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e10834c-7fae-42d5-af06-69fcde714f1d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e10834c-7fae-42d5-af06-69fcde714f1d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1e10834c-7fae-42d5-af06-69fcde714f1d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd65e94a28a98195a915288f8cec0868164585ab185878d9c4c4579e52bd8e79","name":"Марксэн","registered_at":"2026-06-15T23:54:59Z","symbol":"NIM0872167","token_address":"0x129319f3c354a19197161a0e1c88645d57e25950","type":"artist","uuid":"1e10834c-7fae-42d5-af06-69fcde714f1d"}
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 0xcd65e94a28a98195a915288f8cec0868164585ab185878d9c4c4579e52bd8e79. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e10834c-7fae-42d5-af06-69fcde714f1d.json and https://artists.proofprofile.net/proofs/artist/1e10834c-7fae-42d5-af06-69fcde714f1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xcd65e94a28a98195a915288f8cec0868164585ab185878d9c4c4579e52bd8e79","name":"Марксэн","registered_at":"2026-06-15T23:54:59Z","symbol":"NIM0872167","token_address":"0x129319f3c354a19197161a0e1c88645d57e25950","type":"artist","uuid":"1e10834c-7fae-42d5-af06-69fcde714f1d"}
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