Антон Чехов
type: MusicGroup
popularity: 6
followers: 86
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3ba304849c389d98b5ce96d6cf31cb2541a3f097afe1eedc6edc69b790f1777
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953888
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953888
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d0d2535-4430-4269-b02c-2a8706059a39.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d0d2535-4430-4269-b02c-2a8706059a39.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0d0d2535-4430-4269-b02c-2a8706059a39
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:55:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd3ba304849c389d98b5ce96d6cf31cb2541a3f097afe1eedc6edc69b790f1777","name":"Антон Чехов","registered_at":"2026-06-15T18:08:03Z","symbol":"NIM0789414","token_address":"0x3f6d3d6d3dc8f69cfe2ad58e291be75b9898a6be","type":"artist","uuid":"0d0d2535-4430-4269-b02c-2a8706059a39"}
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 0xd3ba304849c389d98b5ce96d6cf31cb2541a3f097afe1eedc6edc69b790f1777. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d0d2535-4430-4269-b02c-2a8706059a39.json and https://artists.proofprofile.net/proofs/artist/0d0d2535-4430-4269-b02c-2a8706059a39.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T04:55:23Z
  text: {"copyright_id":"0xd3ba304849c389d98b5ce96d6cf31cb2541a3f097afe1eedc6edc69b790f1777","name":"Антон Чехов","registered_at":"2026-06-15T18:08:03Z","symbol":"NIM0789414","token_address":"0x3f6d3d6d3dc8f69cfe2ad58e291be75b9898a6be","type":"artist","uuid":"0d0d2535-4430-4269-b02c-2a8706059a39"}
album: Три сестры
  type: MusicAlbum
  date published: 1947
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  type: MusicAlbum
  date published: 1956
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  type: MusicAlbum
  date published: 1976
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  date published: 2021
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  date published: 2024-01-17
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  type: MusicAlbum
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  date published: 2024-04-24