Olle Hedberg
type: MusicGroup
description: Carl Olof "Olle" Hedberg (31 May 1899 in Norrköping, Sweden – 20 September 1974 in Verveln, Östergötland, Sweden) was a Swedish author. Hedberg is known as a probing satirist of the middle class and
popularity: 6
followers: 580
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb60347f75cbb815b625cbdcb87c2705310ee28a4ffdd1f21d860d5a12a942eff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad0db66c-da16-437a-9be8-8986b52e0fd6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad0db66c-da16-437a-9be8-8986b52e0fd6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad0db66c-da16-437a-9be8-8986b52e0fd6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb60347f75cbb815b625cbdcb87c2705310ee28a4ffdd1f21d860d5a12a942eff","name":"Olle Hedberg","registered_at":"2026-06-20T10:35:08Z","symbol":"NIM1592472","token_address":"0x0fe12e134465ab9683528c85e5d8060b78212bd2","type":"artist","uuid":"ad0db66c-da16-437a-9be8-8986b52e0fd6"}
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 0xb60347f75cbb815b625cbdcb87c2705310ee28a4ffdd1f21d860d5a12a942eff. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad0db66c-da16-437a-9be8-8986b52e0fd6.json and https://artists.proofprofile.net/proofs/artist/ad0db66c-da16-437a-9be8-8986b52e0fd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xb60347f75cbb815b625cbdcb87c2705310ee28a4ffdd1f21d860d5a12a942eff","name":"Olle Hedberg","registered_at":"2026-06-20T10:35:08Z","symbol":"NIM1592472","token_address":"0x0fe12e134465ab9683528c85e5d8060b78212bd2","type":"artist","uuid":"ad0db66c-da16-437a-9be8-8986b52e0fd6"}
album: Wonderful
  type: MusicAlbum
  date published: 2011-05-20