Bengt-Arne Wallin
type: MusicGroup
genre: swedish ballads
description: Bengt-Arne Wallin (13 July 1926 – 23 November 2015) was a Swedish jazz composer, arranger, trumpeter, and flugelhorn player who played jazz influenced by Swedish traditional folk music. He also wrote
popularity: 3
followers: 164
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953982
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953982
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/2c2df4a3-5c40-42af-bbe4-403c9919d771.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/2c2df4a3-5c40-42af-bbe4-403c9919d771.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2c2df4a3-5c40-42af-bbe4-403c9919d771
additional property: OTSTimestamp
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  value: 2026-06-16T17:42:23Z
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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0129e719723feaef2708f865d2ef01c7714e6296350f1dfad7ae2db296217c2. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c2df4a3-5c40-42af-bbe4-403c9919d771.json and https://artists.proofprofile.net/proofs/artist/2c2df4a3-5c40-42af-bbe4-403c9919d771.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T18:08:34Z
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album: Isn't It Romantic (with Rolf Blomquist's Orchestra)
  type: MusicAlbum
  date published: 1957-04-19
album: Miles from Duke
  type: MusicAlbum
  date published: 1986
album: The Birth and Rebirth of Swedish Folk Jazz
  type: MusicAlbum
  date published: 1998-01-29
album: Miles from Duke
  type: MusicAlbum
  date published: 2011-05-01