Ursula Buckel
type: MusicGroup
description: Ursula Buckel (11 February 1926 – 5 December 2005) was a German soprano singer, known for singing works of Johann Sebastian Bach. Career Born in the Thuringian town of Lauscha, Ursula Buckel studie
popularity: 4
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x50d5852654b02f8bd05cf9b3ae5f2d93c74dcf65fdeacfc71450819018edf924
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953996
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953996
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ece70e2-7dc7-421a-b324-154a5cb4e392.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ece70e2-7dc7-421a-b324-154a5cb4e392.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2ece70e2-7dc7-421a-b324-154a5cb4e392
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:04:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x50d5852654b02f8bd05cf9b3ae5f2d93c74dcf65fdeacfc71450819018edf924","name":"Ursula Buckel","registered_at":"2026-06-16T06:10:26Z","symbol":"NIM0961847","token_address":"0x6e3d8834d21af14a3dde69af39341f1e2ea3a5ca","type":"artist","uuid":"2ece70e2-7dc7-421a-b324-154a5cb4e392"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d5852654b02f8bd05cf9b3ae5f2d93c74dcf65fdeacfc71450819018edf924. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ece70e2-7dc7-421a-b324-154a5cb4e392.json and https://artists.proofprofile.net/proofs/artist/2ece70e2-7dc7-421a-b324-154a5cb4e392.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:04:35Z
  text: {"copyright_id":"0x50d5852654b02f8bd05cf9b3ae5f2d93c74dcf65fdeacfc71450819018edf924","name":"Ursula Buckel","registered_at":"2026-06-16T06:10:26Z","symbol":"NIM0961847","token_address":"0x6e3d8834d21af14a3dde69af39341f1e2ea3a5ca","type":"artist","uuid":"2ece70e2-7dc7-421a-b324-154a5cb4e392"}