Michael Cristofer
type: MusicGroup
description: Michael Cristofer (born January 22, 1945) is an American actor, playwright, and filmmaker. He received the Pulitzer Prize for Drama and the Tony Award for Best Play for The Shadow Box in 1977. From 20
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cec71369a9b62bbd601057cb748d7fff568d8cc896d724d4ecfb250958ebeaa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae4f6142-7d15-4727-8ee0-14400c2c70c9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae4f6142-7d15-4727-8ee0-14400c2c70c9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ae4f6142-7d15-4727-8ee0-14400c2c70c9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0cec71369a9b62bbd601057cb748d7fff568d8cc896d724d4ecfb250958ebeaa","name":"Michael Cristofer","registered_at":"2026-06-20T10:31:06Z","symbol":"NIM1595759","token_address":"0x6e021080faa96e98694bf68c9bd09ec661464eb3","type":"artist","uuid":"ae4f6142-7d15-4727-8ee0-14400c2c70c9"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cec71369a9b62bbd601057cb748d7fff568d8cc896d724d4ecfb250958ebeaa. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae4f6142-7d15-4727-8ee0-14400c2c70c9.json and https://artists.proofprofile.net/proofs/artist/ae4f6142-7d15-4727-8ee0-14400c2c70c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x0cec71369a9b62bbd601057cb748d7fff568d8cc896d724d4ecfb250958ebeaa","name":"Michael Cristofer","registered_at":"2026-06-20T10:31:06Z","symbol":"NIM1595759","token_address":"0x6e021080faa96e98694bf68c9bd09ec661464eb3","type":"artist","uuid":"ae4f6142-7d15-4727-8ee0-14400c2c70c9"}