Phyllis Curtin
type: MusicGroup
description: Phyllis Curtin (née Smith; December 3, 1921 – June 5, 2016) was an American soprano and academic teacher who had an active career in operas and concerts from the early 1950s through the 1980s. She is
popularity: 2
followers: 310
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x178c1769ce526b8f6e8e8b5618e192d1ce0b64376a26717be4c29bd0dd0101ae
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/8cba2f42-77fe-4195-8d4f-63a73d71fd1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8cba2f42-77fe-4195-8d4f-63a73d71fd1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8cba2f42-77fe-4195-8d4f-63a73d71fd1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x178c1769ce526b8f6e8e8b5618e192d1ce0b64376a26717be4c29bd0dd0101ae","name":"Phyllis Curtin","registered_at":"2026-06-17T14:43:40Z","symbol":"NIM1427762","token_address":"0x9bfe36bd384b4ab766735b90c6e655c36218a748","type":"artist","uuid":"8cba2f42-77fe-4195-8d4f-63a73d71fd1a"}
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 0x178c1769ce526b8f6e8e8b5618e192d1ce0b64376a26717be4c29bd0dd0101ae. 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/8cba2f42-77fe-4195-8d4f-63a73d71fd1a.json and https://artists.proofprofile.net/proofs/artist/8cba2f42-77fe-4195-8d4f-63a73d71fd1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x178c1769ce526b8f6e8e8b5618e192d1ce0b64376a26717be4c29bd0dd0101ae","name":"Phyllis Curtin","registered_at":"2026-06-17T14:43:40Z","symbol":"NIM1427762","token_address":"0x9bfe36bd384b4ab766735b90c6e655c36218a748","type":"artist","uuid":"8cba2f42-77fe-4195-8d4f-63a73d71fd1a"}
album: Cantigas Y Canciones of Latin America
  type: MusicAlbum
  date published: 2008