Janne Kataja
type: MusicGroup
description: thumb|right|Janne Kataja at the Hartwall Arena in the Elämä lapselle concert on 12 September 2007 Janne Kataja (born 5 April 1980Janne Kataja kisailee kilpavoimistelussa, Ilta-Sanomat 4 February 2011.
popularity: 7
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fd6294cb8b9caf577815be0f5130b6fbdd12edde26a0a8f1e5e073dd70b1997
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6fd6294cb8b9caf577815be0f5130b6fbdd12edde26a0a8f1e5e073dd70b1997","name":"Janne Kataja","registered_at":"2026-06-20T12:22:48Z","symbol":"NIM1612291","token_address":"0x8a68bd40454882164bbf2c7ef5bf0e0e6da2042d","type":"artist","uuid":"b20368d8-1a8f-4137-a3a3-430e36bdeccb"}
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 0x6fd6294cb8b9caf577815be0f5130b6fbdd12edde26a0a8f1e5e073dd70b1997. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb.json and https://artists.proofprofile.net/proofs/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x6fd6294cb8b9caf577815be0f5130b6fbdd12edde26a0a8f1e5e073dd70b1997","name":"Janne Kataja","registered_at":"2026-06-20T12:22:48Z","symbol":"NIM1612291","token_address":"0x8a68bd40454882164bbf2c7ef5bf0e0e6da2042d","type":"artist","uuid":"b20368d8-1a8f-4137-a3a3-430e36bdeccb"}