Kay Medford
type: MusicGroup
description: Margaret Kathleen Regan (September 14, 1916 – April 10, 1980), better known as Kay Medford, was an American actress and singer. For her performance as Rose Brice in the musical Funny Girl and the film
popularity: 4
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x348c8f4e87bd50f781aac97f3ce33830d97e5d3d56af7ec49232eacdb5f52e01
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0aec5584-7ceb-40d9-ac12-0d72941a7e37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0aec5584-7ceb-40d9-ac12-0d72941a7e37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0aec5584-7ceb-40d9-ac12-0d72941a7e37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x348c8f4e87bd50f781aac97f3ce33830d97e5d3d56af7ec49232eacdb5f52e01","name":"Kay Medford","registered_at":"2026-06-15T17:22:24Z","symbol":"NIM0778515","token_address":"0x9f49068114c2ba0845d09131ae73477287108830","type":"artist","uuid":"0aec5584-7ceb-40d9-ac12-0d72941a7e37"}
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 0x348c8f4e87bd50f781aac97f3ce33830d97e5d3d56af7ec49232eacdb5f52e01. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0aec5584-7ceb-40d9-ac12-0d72941a7e37.json and https://artists.proofprofile.net/proofs/artist/0aec5584-7ceb-40d9-ac12-0d72941a7e37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x348c8f4e87bd50f781aac97f3ce33830d97e5d3d56af7ec49232eacdb5f52e01","name":"Kay Medford","registered_at":"2026-06-15T17:22:24Z","symbol":"NIM0778515","token_address":"0x9f49068114c2ba0845d09131ae73477287108830","type":"artist","uuid":"0aec5584-7ceb-40d9-ac12-0d72941a7e37"}