Caterina Mancini
type: MusicGroup
genre: opera
description: thumb|Caterina Mancini,1951 Caterina Mancini (10 November 1924 – 21 January 2011) was an Italian dramatic coloratura soprano, primarily active in Italy in the 1950s. Mancini was born at Genzano di R
popularity: 2
followers: 97
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3e402b41ca12f14aae288219a96d9a393c412dbd93ced646cd2b4daabfc11ca
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/84dc370b-13e5-4ae8-badd-fc771b4950df.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/84dc370b-13e5-4ae8-badd-fc771b4950df.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/84dc370b-13e5-4ae8-badd-fc771b4950df
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd3e402b41ca12f14aae288219a96d9a393c412dbd93ced646cd2b4daabfc11ca","name":"Caterina Mancini","registered_at":"2026-06-17T12:00:28Z","symbol":"NIM1388904","token_address":"0x52272b8857e3cea4f38a5b7a2546e6834c3937b8","type":"artist","uuid":"84dc370b-13e5-4ae8-badd-fc771b4950df"}
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 0xd3e402b41ca12f14aae288219a96d9a393c412dbd93ced646cd2b4daabfc11ca. 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/84dc370b-13e5-4ae8-badd-fc771b4950df.json and https://artists.proofprofile.net/proofs/artist/84dc370b-13e5-4ae8-badd-fc771b4950df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xd3e402b41ca12f14aae288219a96d9a393c412dbd93ced646cd2b4daabfc11ca","name":"Caterina Mancini","registered_at":"2026-06-17T12:00:28Z","symbol":"NIM1388904","token_address":"0x52272b8857e3cea4f38a5b7a2546e6834c3937b8","type":"artist","uuid":"84dc370b-13e5-4ae8-badd-fc771b4950df"}
album: Verdi: Aida
  type: MusicAlbum
  date published: 2013-05-10