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    "text": "This means that someone permanently stamped that 64-character hash into the Base blockchain as a record, rather than sending a readable sentence like \"Hello World.\" In blockchain systems, this is a common practice used for Proof of Existence or Verification. \n\nInstead of putting a large file or private message directly on the blockchain (which is expensive and public), people do this:\nThey take a private file or message (like a contract, a legal document, a chat log, or a password).\n\nThey run it through a hash calculator to get a unique digital fingerprint: adae38...b33c.\nThey send that fingerprint in a transaction to the blockchain.\n\nWhy do this?\n\nBecause the blockchain is an immutable ledger, that transaction acts as a notarized, timestamped receipt.\n\nIf someone later needs to prove that a specific document existed exactly as it was on Sep-29-2026, they can run that document through a hash calculator.\n\n If the hashes match, it proves the document has not been altered or tampered with since that exact minute.",
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