Fredrik Ohlsson
type: MusicGroup
genre: swedish ballads
description: Carl Fredrik Walter Ola Ohlsson (12 June 1931 – 18 November 2023) was a Swedish actor. In 1956, Ohlsson won a scholarship to Royal Academy of Dramatic Art, where he made his stage debut as Tesman wit
popularity: 12
followers: 54
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x39f6f2d5fbc7dddc26d76f00dc0b792185fdcdcae092ae9166bbc007f837284f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953707
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953707
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cfd0da6-2b34-4c7a-a117-f8c00915b1ce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cfd0da6-2b34-4c7a-a117-f8c00915b1ce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7cfd0da6-2b34-4c7a-a117-f8c00915b1ce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:22:21Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x39f6f2d5fbc7dddc26d76f00dc0b792185fdcdcae092ae9166bbc007f837284f","name":"Fredrik Ohlsson","registered_at":"2026-06-14T17:36:09Z","symbol":"NIM0526449","token_address":"0x0e35d989e30c16d8f6bcaa40a7398f2084c24413","type":"artist","uuid":"7cfd0da6-2b34-4c7a-a117-f8c00915b1ce"}
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 0x39f6f2d5fbc7dddc26d76f00dc0b792185fdcdcae092ae9166bbc007f837284f. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cfd0da6-2b34-4c7a-a117-f8c00915b1ce.json and https://artists.proofprofile.net/proofs/artist/7cfd0da6-2b34-4c7a-a117-f8c00915b1ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T23:22:21Z
  text: {"copyright_id":"0x39f6f2d5fbc7dddc26d76f00dc0b792185fdcdcae092ae9166bbc007f837284f","name":"Fredrik Ohlsson","registered_at":"2026-06-14T17:36:09Z","symbol":"NIM0526449","token_address":"0x0e35d989e30c16d8f6bcaa40a7398f2084c24413","type":"artist","uuid":"7cfd0da6-2b34-4c7a-a117-f8c00915b1ce"}