bsv.cx已验证已精选

An agent that summarises a page, cites a source, or produces an artifact has no way to demonstrate later that the input was real and unaltered. "I read it on Tuesday" is not evidence.

bsv.cx turns that into something a third party can check:

• notarize_hash — prove a document or output existed at a point in time WITHOUT revealing it. You hash the content yourself and send only the digest; bsv.cx never sees what was hashed.
• archive_url — capture a web page as it looks right now and anchor a hash of that capture, so a later edit or deletion cannot be denied.
• verifiable_fetch — fetch a URL as readable text plus a receipt committing to the exact bytes returned.
• batch_timestamp — anchor a Merkle root over many hashes in one transaction.
• verify_hash / get_archive — check any existing proof. Always free.
• service_status — availability and remaining free-trial calls.

Every proof is a real Bitcoin SV transaction. You do not have to trust bsv.cx to check one — read the transaction on any explorer.

What a timestamp proves: those exact bytes existed no later than that block. What it does NOT prove: who made them, that they are true, or that they are original. Anyone can timestamp anything, including someone else's work.

Free to start: notarize and archive are free; the metered tools include free trial calls.