Eva Dell'Acqua
type: MusicGroup
description: Eva Dell'Acqua (also Dall'Acqua, 28 January 1856, Schaerbeek12 February 1930, Ixelles) was a Belgian singer and composer of Italian ancestry. She wrote fifteen operas and operettas, as well as orchest
popularity: 2
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5d9f552bdc4d7c594bc13939e77609220272f8f41ed2b251d82e97b1da1f40b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f56722e-e6f3-46f1-a482-7a4b4d6a087c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f56722e-e6f3-46f1-a482-7a4b4d6a087c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f56722e-e6f3-46f1-a482-7a4b4d6a087c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf5d9f552bdc4d7c594bc13939e77609220272f8f41ed2b251d82e97b1da1f40b","name":"Eva Dell'Acqua","registered_at":"2026-06-16T00:28:38Z","symbol":"NIM0880203","token_address":"0xcfd493d4267f93f6887f13c3ea70c8e6f500da8b","type":"artist","uuid":"1f56722e-e6f3-46f1-a482-7a4b4d6a087c"}
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 0xf5d9f552bdc4d7c594bc13939e77609220272f8f41ed2b251d82e97b1da1f40b. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f56722e-e6f3-46f1-a482-7a4b4d6a087c.json and https://artists.proofprofile.net/proofs/artist/1f56722e-e6f3-46f1-a482-7a4b4d6a087c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xf5d9f552bdc4d7c594bc13939e77609220272f8f41ed2b251d82e97b1da1f40b","name":"Eva Dell'Acqua","registered_at":"2026-06-16T00:28:38Z","symbol":"NIM0880203","token_address":"0xcfd493d4267f93f6887f13c3ea70c8e6f500da8b","type":"artist","uuid":"1f56722e-e6f3-46f1-a482-7a4b4d6a087c"}
album: Dell' Acqua: Villanelle
  type: MusicAlbum
  date published: 1936-06-13