Jan Jakob
type: MusicGroup
description: Jan Jakob (born 2 December 1982) is a Czech politician serving as a member of the Chamber of Deputies for TOP 09 since 2021. From 2010 to 2022, he served as mayor of Roztoky. References Category:198
popularity: 6
followers: 1402
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x95ab09eedd778831cbd9dacab5b5d2d604062f6691c6e0a04796c679dd9cbe90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61681252-1842-4998-8cb0-3ed33f263c3d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61681252-1842-4998-8cb0-3ed33f263c3d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/61681252-1842-4998-8cb0-3ed33f263c3d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x95ab09eedd778831cbd9dacab5b5d2d604062f6691c6e0a04796c679dd9cbe90","name":"Jan Jakob","registered_at":"2026-06-16T23:28:47Z","symbol":"NIM1209613","token_address":"0x27da3b8ba8513c696ceb843a683dbb0bd35dad7d","type":"artist","uuid":"61681252-1842-4998-8cb0-3ed33f263c3d"}
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 0x95ab09eedd778831cbd9dacab5b5d2d604062f6691c6e0a04796c679dd9cbe90. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61681252-1842-4998-8cb0-3ed33f263c3d.json and https://artists.proofprofile.net/proofs/artist/61681252-1842-4998-8cb0-3ed33f263c3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x95ab09eedd778831cbd9dacab5b5d2d604062f6691c6e0a04796c679dd9cbe90","name":"Jan Jakob","registered_at":"2026-06-16T23:28:47Z","symbol":"NIM1209613","token_address":"0x27da3b8ba8513c696ceb843a683dbb0bd35dad7d","type":"artist","uuid":"61681252-1842-4998-8cb0-3ed33f263c3d"}
album: Public Secrets
  type: MusicAlbum
  date published: 2012-04-10
album: Story That My Grandma Told
  type: MusicAlbum
  date published: 2015-12-19
album: Short Ride, Long Story
  type: MusicAlbum
  date published: 2019-12-15
album: Fiesta Sessions (Live At Tessmar Studios, Hannover, 2021)
  type: MusicAlbum
  date published: 2021-12-31