Marianne Cornetti
type: MusicGroup
genre: opera
description: Marianne Cornetti (born 1962) is an American opera singer, known for her rendition of mezzo-soprano roles in operas by Giuseppe Verdi, such as Azucena in Il trovatore, Amneris in Aida, and Eboli in Do
popularity: 4
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9cd7a98d263df0a34a6c20bae4586f7cf41de11b0a4568c1e3ecb33c03e220e0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954139
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954139
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f9f6346-2874-4bae-a794-2fa715e43fbe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f9f6346-2874-4bae-a794-2fa715e43fbe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f9f6346-2874-4bae-a794-2fa715e43fbe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T21:12:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9cd7a98d263df0a34a6c20bae4586f7cf41de11b0a4568c1e3ecb33c03e220e0","name":"Marianne Cornetti","registered_at":"2026-06-17T10:08:38Z","symbol":"NIM1362245","token_address":"0x057d4ac7448514f3ce5aad992bc92cd55e3c0b38","type":"artist","uuid":"7f9f6346-2874-4bae-a794-2fa715e43fbe"}
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 0x9cd7a98d263df0a34a6c20bae4586f7cf41de11b0a4568c1e3ecb33c03e220e0. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f9f6346-2874-4bae-a794-2fa715e43fbe.json and https://artists.proofprofile.net/proofs/artist/7f9f6346-2874-4bae-a794-2fa715e43fbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x9cd7a98d263df0a34a6c20bae4586f7cf41de11b0a4568c1e3ecb33c03e220e0","name":"Marianne Cornetti","registered_at":"2026-06-17T10:08:38Z","symbol":"NIM1362245","token_address":"0x057d4ac7448514f3ce5aad992bc92cd55e3c0b38","type":"artist","uuid":"7f9f6346-2874-4bae-a794-2fa715e43fbe"}
album: Meyerbeer: Le prophète
  type: MusicAlbum
  date published: 2018-03-02
album: Meyerbeer: Le prophète
  type: MusicAlbum
  date published: 2018-03-02