Ulf Wallin
type: MusicGroup
genre: chamber music
description: Ulf Wallin is a Swedish classical violinist and professor at the Hochschule für Musik Hanns Eisler Berlin.Ulf Wallin Violinist on Operamusica Life Born in Växjö, Wallin studied at the Royal College
popularity: 12
followers: 896
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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 0x50eda9e8185a2a2d16fa2e76f5ca69a82a5e02240ae6b876adde30c4d2ac81f7. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3269ae01-99ae-4131-8993-db58f622f8dc.json and https://artists.proofprofile.net/proofs/artist/3269ae01-99ae-4131-8993-db58f622f8dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:47:11Z
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album: Herzogenberg: Violin Concerto in A Major, WoO 4 & Odysseus, Op. 16
  type: MusicAlbum
  date published: 2010-02-22