Anna Zemanová
type: MusicGroup
description: Anna Zemanová (née Sedláková; born 12 September 1959 in Topoľčany) is a Slovak environmentalist, folklorist and politician, who served as a member of the National Council from 2016 to 2023. Life out
popularity: 12
followers: 325
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953596
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  value: https://artists.proofprofile.net/proofs/artist/0ac73979-552f-4d38-995d-5fbd7774f186.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ac73979-552f-4d38-995d-5fbd7774f186
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03276af1d9b0a07f3b074caa504e40e2f234ed403121ed6e9e69adf764e0f222. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ac73979-552f-4d38-995d-5fbd7774f186.json and https://artists.proofprofile.net/proofs/artist/0ac73979-552f-4d38-995d-5fbd7774f186.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T06:21:39Z
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