László Lajtha
type: MusicGroup
description: right|thumb|250px|László Lajtha László Lajtha (; 30 June 1892 – 16 February 1963) was a Hungarian composer, ethnomusicologist and conductor. Career Lajtha was born to Ida Wiesel, a Transylvanian-Hu
popularity: 2
followers: 312
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb448ddb67575691c5736511023f0d0e659f5fe9a13ecd838c26c0e12ed93f6fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953985
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953985
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2e03408d-14cf-42ad-aeb2-b53777d0bc27.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2e03408d-14cf-42ad-aeb2-b53777d0bc27.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2e03408d-14cf-42ad-aeb2-b53777d0bc27
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:03:53Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb448ddb67575691c5736511023f0d0e659f5fe9a13ecd838c26c0e12ed93f6fd","name":"László Lajtha","registered_at":"2026-06-16T05:35:06Z","symbol":"NIM0953418","token_address":"0x877d0e25ba75602d64a94a6a9e3e664c54078ac0","type":"artist","uuid":"2e03408d-14cf-42ad-aeb2-b53777d0bc27"}
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 0xb448ddb67575691c5736511023f0d0e659f5fe9a13ecd838c26c0e12ed93f6fd. Chain 2 (Bitcoin): anchored in block 953985 (2026-06-16T18:03:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e03408d-14cf-42ad-aeb2-b53777d0bc27.json and https://artists.proofprofile.net/proofs/artist/2e03408d-14cf-42ad-aeb2-b53777d0bc27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T18:03:53Z
  text: {"copyright_id":"0xb448ddb67575691c5736511023f0d0e659f5fe9a13ecd838c26c0e12ed93f6fd","name":"László Lajtha","registered_at":"2026-06-16T05:35:06Z","symbol":"NIM0953418","token_address":"0x877d0e25ba75602d64a94a6a9e3e664c54078ac0","type":"artist","uuid":"2e03408d-14cf-42ad-aeb2-b53777d0bc27"}
album: Complete Works for String Orchestra
  type: MusicAlbum
  date published: 2016-01-08