Gustav Larsson
type: MusicGroup
description: Gustav Erik Larsson (born 20 September 1980) is a Swedish former professional road racing cyclist, who rode professionally between 2001 and 2016 for nine different teams. Larsson specialised as a time
popularity: 5
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9bf3f857b277586b3c50a46b042baecc3b338e573207d3fd7b396cb13be2181e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c35f5644-d93f-4f56-8289-1757fa0336eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c35f5644-d93f-4f56-8289-1757fa0336eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c35f5644-d93f-4f56-8289-1757fa0336eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9bf3f857b277586b3c50a46b042baecc3b338e573207d3fd7b396cb13be2181e","name":"Gustav Larsson","registered_at":"2026-06-20T20:13:03Z","symbol":"NIM1700946","token_address":"0xe20d8fbbbf3c287bdaaee0cf56a96a3d8aa65309","type":"artist","uuid":"c35f5644-d93f-4f56-8289-1757fa0336eb"}
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 0x9bf3f857b277586b3c50a46b042baecc3b338e573207d3fd7b396cb13be2181e. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c35f5644-d93f-4f56-8289-1757fa0336eb.json and https://artists.proofprofile.net/proofs/artist/c35f5644-d93f-4f56-8289-1757fa0336eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x9bf3f857b277586b3c50a46b042baecc3b338e573207d3fd7b396cb13be2181e","name":"Gustav Larsson","registered_at":"2026-06-20T20:13:03Z","symbol":"NIM1700946","token_address":"0xe20d8fbbbf3c287bdaaee0cf56a96a3d8aa65309","type":"artist","uuid":"c35f5644-d93f-4f56-8289-1757fa0336eb"}