bsv.cx

Timestamp and verify evidence on the Bitcoin SV blockchain. Use notarize_hash to prove a document or output existed at a point in time WITHOUT revealing it — hash the content yourself and send only the digest. Use archive_url to capture a web page as it looked right now, so a later change cannot be denied. Use verify_hash and get_archive to check any existing proof; verification is free and needs no trust in bsv.cx. Anchors are independently verified against bsv.cx's OWN block headers (synced over the BSV P2P network, not an explorer), and every proof is exportable as BEEF/BUMP (/spv/beef/:txid, /spv/bump/:txid) that any @bsv/sdk client verifies with no bsv.cx-specific code. Hashes are of exact bytes: re-encoding a file changes its hash.