Joseph Leopold Eybler
type: MusicGroup
description: thumb|right|Joseph Edler von Eybler, 1846 Joseph Leopold Eybler (8 February 1765 – 24 July 1846) was an Austrian composer and contemporary of Wolfgang Amadeus Mozart. Life Eybler was born into a musi
popularity: 9
followers: 461
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86ba544a4720da4f7cf14b42aefaa512856420c71576ca15c83b4081599e60b5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80276a6f-576f-4f04-9779-bb5b964be883.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80276a6f-576f-4f04-9779-bb5b964be883.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/80276a6f-576f-4f04-9779-bb5b964be883
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86ba544a4720da4f7cf14b42aefaa512856420c71576ca15c83b4081599e60b5","name":"Joseph Leopold Eybler","registered_at":"2026-06-17T10:21:14Z","symbol":"NIM1365252","token_address":"0xb84f1267f8949a8c0d78018dac1d9d53cac20778","type":"artist","uuid":"80276a6f-576f-4f04-9779-bb5b964be883"}
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 0x86ba544a4720da4f7cf14b42aefaa512856420c71576ca15c83b4081599e60b5. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80276a6f-576f-4f04-9779-bb5b964be883.json and https://artists.proofprofile.net/proofs/artist/80276a6f-576f-4f04-9779-bb5b964be883.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x86ba544a4720da4f7cf14b42aefaa512856420c71576ca15c83b4081599e60b5","name":"Joseph Leopold Eybler","registered_at":"2026-06-17T10:21:14Z","symbol":"NIM1365252","token_address":"0xb84f1267f8949a8c0d78018dac1d9d53cac20778","type":"artist","uuid":"80276a6f-576f-4f04-9779-bb5b964be883"}
album: Eybler: String Trio, HV 197 & String Quintet, HV 188
  type: MusicAlbum
  date published: 2006-04-01