Ann-Christine Bärnsten
type: MusicGroup
genre: schlager
genre: swedish ballads
description: Margareta Ann-Christine Bärnsten (born 10 July 1957), is a Swedish singer and writer, who has written several detective stories. As a student Bärnsten attended the Adolf Fredrik's Music School, a hi
popularity: 7
followers: 97
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x190ca37accc5f8e7e4b028caffe5a85d6cda1a362795351dd2300d2bb7496c44
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/67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x190ca37accc5f8e7e4b028caffe5a85d6cda1a362795351dd2300d2bb7496c44","name":"Ann-Christine Bärnsten","registered_at":"2026-06-17T01:46:33Z","symbol":"NIM1242483","token_address":"0x686c56cb80158cf4438b528806a89b2d16ff5f87","type":"artist","uuid":"67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8"}
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 0x190ca37accc5f8e7e4b028caffe5a85d6cda1a362795351dd2300d2bb7496c44. 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/67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8.json and https://artists.proofprofile.net/proofs/artist/67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x190ca37accc5f8e7e4b028caffe5a85d6cda1a362795351dd2300d2bb7496c44","name":"Ann-Christine Bärnsten","registered_at":"2026-06-17T01:46:33Z","symbol":"NIM1242483","token_address":"0x686c56cb80158cf4438b528806a89b2d16ff5f87","type":"artist","uuid":"67bcd9af-6db8-4b97-8ec3-d9bc4ccdb6d8"}
album: Ska vi plocka körsbär i min trädgård
  type: MusicAlbum
  date published: 1975-05-01
album: Kom och sjung en countrysång
  type: MusicAlbum
  date published: 1975-08-01