Andrea Velis
type: MusicGroup
genre: opera
description: Andrea Velis (7 June 1932 – 4 October 1994) was an American operatic tenor who had a lengthy association with the Metropolitan Opera that spanned 33 seasons. Considered a highly skilled character acto
popularity: 3
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15773c5c4c3a71f4eaaa9af623f7e0ecd84adee62b0e902f4a11e7f4cbf6c0a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05c78cae-e32e-43cb-a6c9-9ce4ac910348.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05c78cae-e32e-43cb-a6c9-9ce4ac910348.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05c78cae-e32e-43cb-a6c9-9ce4ac910348
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x15773c5c4c3a71f4eaaa9af623f7e0ecd84adee62b0e902f4a11e7f4cbf6c0a7","name":"Andrea Velis","registered_at":"2026-06-15T15:46:00Z","symbol":"NIM0755509","token_address":"0xd93b88f13164516805b5424e50d2affd7406a01b","type":"artist","uuid":"05c78cae-e32e-43cb-a6c9-9ce4ac910348"}
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 0x15773c5c4c3a71f4eaaa9af623f7e0ecd84adee62b0e902f4a11e7f4cbf6c0a7. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05c78cae-e32e-43cb-a6c9-9ce4ac910348.json and https://artists.proofprofile.net/proofs/artist/05c78cae-e32e-43cb-a6c9-9ce4ac910348.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0x15773c5c4c3a71f4eaaa9af623f7e0ecd84adee62b0e902f4a11e7f4cbf6c0a7","name":"Andrea Velis","registered_at":"2026-06-15T15:46:00Z","symbol":"NIM0755509","token_address":"0xd93b88f13164516805b5424e50d2affd7406a01b","type":"artist","uuid":"05c78cae-e32e-43cb-a6c9-9ce4ac910348"}
album: Die Meistersinger von Nürnberg
  type: MusicAlbum
  date published: 2022-06-03