Stina Wirsén
type: MusicGroup
description: thumb|Stina Wirsén (2017) photo by Ulrika Zwenger|alt=Stina Wirsén (2017) photo by Ulrika Zwenger Stina Wirsén Hedengren (born 1968) is a Swedish author and illustrator. Early life and education Stin
popularity: 2
followers: 11
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42e3a0ecb1f4149f5489c4d73218267e6b79b0d0a4475b4366613284ab36e1b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954010
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954010
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3421e9d9-537b-41e2-93db-dd953e8e4486.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3421e9d9-537b-41e2-93db-dd953e8e4486.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3421e9d9-537b-41e2-93db-dd953e8e4486
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:41:36Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x42e3a0ecb1f4149f5489c4d73218267e6b79b0d0a4475b4366613284ab36e1b7","name":"Stina Wirsén","registered_at":"2026-06-16T07:40:34Z","symbol":"NIM0983372","token_address":"0xd0c2a99ef2251a22ce37f5e70a17d120211a6c03","type":"artist","uuid":"3421e9d9-537b-41e2-93db-dd953e8e4486"}
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 0x42e3a0ecb1f4149f5489c4d73218267e6b79b0d0a4475b4366613284ab36e1b7. Chain 2 (Bitcoin): anchored in block 954010 (2026-06-16T21:41:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3421e9d9-537b-41e2-93db-dd953e8e4486.json and https://artists.proofprofile.net/proofs/artist/3421e9d9-537b-41e2-93db-dd953e8e4486.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T21:41:36Z
  text: {"copyright_id":"0x42e3a0ecb1f4149f5489c4d73218267e6b79b0d0a4475b4366613284ab36e1b7","name":"Stina Wirsén","registered_at":"2026-06-16T07:40:34Z","symbol":"NIM0983372","token_address":"0xd0c2a99ef2251a22ce37f5e70a17d120211a6c03","type":"artist","uuid":"3421e9d9-537b-41e2-93db-dd953e8e4486"}
album: Bluttan blä
  type: MusicAlbum
  date published: 2024-06-01