Elin Johansson
type: MusicGroup
description: Elin Maria Katarina Johansson (born 5 August 1990) is a Swedish taekwondo athlete. She qualified for the 2012 Summer Olympics but lost against the Australian athlete Carmen Marton in the quarterfinal.
popularity: 9
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x13f2eb13f52da9337c240ab439170368782cb4218b240e212aac59fbd86d5fe7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/968c487e-f5f5-4f55-81fd-2a20214c5741.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/968c487e-f5f5-4f55-81fd-2a20214c5741.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/968c487e-f5f5-4f55-81fd-2a20214c5741
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x13f2eb13f52da9337c240ab439170368782cb4218b240e212aac59fbd86d5fe7","name":"Elin Johansson","registered_at":"2026-06-17T18:10:17Z","symbol":"NIM1477096","token_address":"0x37baed975a0f92bb85009d915fe263a024f4b21a","type":"artist","uuid":"968c487e-f5f5-4f55-81fd-2a20214c5741"}
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 0x13f2eb13f52da9337c240ab439170368782cb4218b240e212aac59fbd86d5fe7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/968c487e-f5f5-4f55-81fd-2a20214c5741.json and https://artists.proofprofile.net/proofs/artist/968c487e-f5f5-4f55-81fd-2a20214c5741.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x13f2eb13f52da9337c240ab439170368782cb4218b240e212aac59fbd86d5fe7","name":"Elin Johansson","registered_at":"2026-06-17T18:10:17Z","symbol":"NIM1477096","token_address":"0x37baed975a0f92bb85009d915fe263a024f4b21a","type":"artist","uuid":"968c487e-f5f5-4f55-81fd-2a20214c5741"}