Ralph Katz
type: MusicGroup
description: Ralph Katz (born 1957)The 2000 World Bridge Teams Olympiad Photo Archive . IMP Bridge Magazine is an American bridge player. Katz is from Burr Ridge, Illinois and graduated from University of Steubenv
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc438faaa9ecc2b70e15419484e03d26eea073faa162c08ea2e6f303b7fd35151
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/8914752e-e679-417a-9ff3-0cde1f6fc443.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8914752e-e679-417a-9ff3-0cde1f6fc443.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8914752e-e679-417a-9ff3-0cde1f6fc443
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc438faaa9ecc2b70e15419484e03d26eea073faa162c08ea2e6f303b7fd35151","name":"Ralph Katz","registered_at":"2026-06-17T13:48:54Z","symbol":"NIM1414699","token_address":"0x6d8d91da6f38ba5da6d67af57d189a3792df58e5","type":"artist","uuid":"8914752e-e679-417a-9ff3-0cde1f6fc443"}
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 0xc438faaa9ecc2b70e15419484e03d26eea073faa162c08ea2e6f303b7fd35151. 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/8914752e-e679-417a-9ff3-0cde1f6fc443.json and https://artists.proofprofile.net/proofs/artist/8914752e-e679-417a-9ff3-0cde1f6fc443.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xc438faaa9ecc2b70e15419484e03d26eea073faa162c08ea2e6f303b7fd35151","name":"Ralph Katz","registered_at":"2026-06-17T13:48:54Z","symbol":"NIM1414699","token_address":"0x6d8d91da6f38ba5da6d67af57d189a3792df58e5","type":"artist","uuid":"8914752e-e679-417a-9ff3-0cde1f6fc443"}