Erik Ask-Upmark
type: MusicGroup
genre: folk
description: Erik Martin Andreas Ask-Upmark (born 13 May 1973) is a Swedish musician and riksspelman on the svensk säckpipa (Swedish bagpipe). He mainly performs with the groups Svanevit, Dråm and Falsobordone in
popularity: 3
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbe30e6c131935be2441ca7e88056b8b5afb001206288712ba0494025b040ed7e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67a56943-e93a-4d91-a42e-84bf822933ac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67a56943-e93a-4d91-a42e-84bf822933ac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/67a56943-e93a-4d91-a42e-84bf822933ac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbe30e6c131935be2441ca7e88056b8b5afb001206288712ba0494025b040ed7e","name":"Erik Ask-Upmark","registered_at":"2026-06-17T01:50:26Z","symbol":"NIM1243410","token_address":"0x7bac986b96faacfbce4a88e7574698c7c7fbf2df","type":"artist","uuid":"67a56943-e93a-4d91-a42e-84bf822933ac"}
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 0xbe30e6c131935be2441ca7e88056b8b5afb001206288712ba0494025b040ed7e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67a56943-e93a-4d91-a42e-84bf822933ac.json and https://artists.proofprofile.net/proofs/artist/67a56943-e93a-4d91-a42e-84bf822933ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xbe30e6c131935be2441ca7e88056b8b5afb001206288712ba0494025b040ed7e","name":"Erik Ask-Upmark","registered_at":"2026-06-17T01:50:26Z","symbol":"NIM1243410","token_address":"0x7bac986b96faacfbce4a88e7574698c7c7fbf2df","type":"artist","uuid":"67a56943-e93a-4d91-a42e-84bf822933ac"}
album: Dråm
  type: MusicAlbum
  date published: 2005-11-05
album: Himlens polska (Heaven's Polska)
  type: MusicAlbum
  date published: 2007-09-10
album: Winter is coming
  type: MusicAlbum
  date published: 2019-06-01