Sofia Larsson
type: MusicGroup
description: Sofia Larsson (born 22 July 1988) is a Swedish athlete specialising in the discus throw. She represented her country at the 2009 World Championships without qualifying for the final. Early in her care
popularity: 3
followers: 243
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5ea210d42714df722e92ee35f48c9d1ad47150289f1deea9054ded3bf824cdb7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16327cd7-1df5-4c6f-ba33-f3f8bf444fe5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16327cd7-1df5-4c6f-ba33-f3f8bf444fe5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16327cd7-1df5-4c6f-ba33-f3f8bf444fe5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5ea210d42714df722e92ee35f48c9d1ad47150289f1deea9054ded3bf824cdb7","name":"Sofia Larsson","registered_at":"2026-06-15T21:20:07Z","symbol":"NIM0835208","token_address":"0x50226c2e210b9877f83f59e2c5806843e99d7fac","type":"artist","uuid":"16327cd7-1df5-4c6f-ba33-f3f8bf444fe5"}
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 0x5ea210d42714df722e92ee35f48c9d1ad47150289f1deea9054ded3bf824cdb7. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16327cd7-1df5-4c6f-ba33-f3f8bf444fe5.json and https://artists.proofprofile.net/proofs/artist/16327cd7-1df5-4c6f-ba33-f3f8bf444fe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0x5ea210d42714df722e92ee35f48c9d1ad47150289f1deea9054ded3bf824cdb7","name":"Sofia Larsson","registered_at":"2026-06-15T21:20:07Z","symbol":"NIM0835208","token_address":"0x50226c2e210b9877f83f59e2c5806843e99d7fac","type":"artist","uuid":"16327cd7-1df5-4c6f-ba33-f3f8bf444fe5"}