Busk Margit Jonsson
type: MusicGroup
genre: opera
genre: swedish ballads
description: thumb|Jonsson in Stockholm in February 2016 Busk Margit Jonsson (born 10 September 1929) is a Swedish soprano opera singer. Jonsson was born in Malung, Dalarna County. She played many roles during he
popularity: 3
followers: 104
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/1a28f3c7-fd06-4e82-b125-71d2670317ff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a28f3c7-fd06-4e82-b125-71d2670317ff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a28f3c7-fd06-4e82-b125-71d2670317ff
additional property: OTSTimestamp
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  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
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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
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc13335d39a7e3cfb8ce2926bfde069031fa1c06829fa647d679a1a9181d85. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a28f3c7-fd06-4e82-b125-71d2670317ff.json and https://artists.proofprofile.net/proofs/artist/1a28f3c7-fd06-4e82-b125-71d2670317ff.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x37cc13335d39a7e3cfb8ce2926bfde069031fa1c06829fa647d679a1a9181d85","name":"Busk Margit Jonsson","registered_at":"2026-06-15T22:42:30Z","symbol":"NIM0854855","token_address":"0xddb6f988801431f9efc92d67532fdc3fc4a26fd8","type":"artist","uuid":"1a28f3c7-fd06-4e82-b125-71d2670317ff"}
album: Kom Hjärtans Fröjd...
  type: MusicAlbum
  date published: 1996-01-01