Valborg Aulin
type: MusicGroup
description: Laura Valborg Aulin (9 January 1860 – 13 March 1928) was a Swedish pianist and composer. Aulin's String Quartet in E minor, Op. 17 and String Quartet in F minor are the most important Swedish music co
popularity: 3
followers: 163
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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 0x8ff3de2c5a23e263accad2205edf2d8f9f20d6db0c697896204b1bc1278a475f. Chain 2 (Bitcoin): anchored in block 954050 (2026-06-17T05:14:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/432ee026-0b8b-4a48-96c3-f290d8218f6f.json and https://artists.proofprofile.net/proofs/artist/432ee026-0b8b-4a48-96c3-f290d8218f6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T05:14:33Z
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album: Valborg Aulin: Tre Fantasistycken, Op. 30: I. Berceuse
  type: MusicAlbum
  date published: 2023-06-30