Maxine Stellman
type: MusicGroup
genre: opera
description: Maxine Elliot Stellman Caruso (May 13, 1906 – June 24, 1972) was an American opera singer, a soprano with the Metropolitan Opera in the 1930s and 1940s. Early life and education Stellman was from Bra
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x40805af613f1edfb77acf485d04b0eb988eaa71fc4bef8d728c19c96b21fcb3a
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/893d91c0-926f-4d9d-9c83-2cd34bd54e5e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/893d91c0-926f-4d9d-9c83-2cd34bd54e5e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/893d91c0-926f-4d9d-9c83-2cd34bd54e5e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x40805af613f1edfb77acf485d04b0eb988eaa71fc4bef8d728c19c96b21fcb3a","name":"Maxine Stellman","registered_at":"2026-06-17T13:33:53Z","symbol":"NIM1411104","token_address":"0x58d6b6647d444a8a70d7cda2e852c8921dae390b","type":"artist","uuid":"893d91c0-926f-4d9d-9c83-2cd34bd54e5e"}
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 0x40805af613f1edfb77acf485d04b0eb988eaa71fc4bef8d728c19c96b21fcb3a. 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/893d91c0-926f-4d9d-9c83-2cd34bd54e5e.json and https://artists.proofprofile.net/proofs/artist/893d91c0-926f-4d9d-9c83-2cd34bd54e5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x40805af613f1edfb77acf485d04b0eb988eaa71fc4bef8d728c19c96b21fcb3a","name":"Maxine Stellman","registered_at":"2026-06-17T13:33:53Z","symbol":"NIM1411104","token_address":"0x58d6b6647d444a8a70d7cda2e852c8921dae390b","type":"artist","uuid":"893d91c0-926f-4d9d-9c83-2cd34bd54e5e"}