TERSIGN
LEDGER · LIVE · GENESIS 2026-07-10

The evidence layer for the agent economy.

When software buys from software, someone has to keep the records straight. Tersign counter-signs every receipt, action, and verdict into a per-seller hash-chain — so every number below is recomputable by anyone, without trusting us.

0
Receipts counter-signed
$0
Receipted GMV · USD
0
Evidence records
0
Disputes adjudicated
0
Sellers on ledger
ledger counter-signing key …
LIVE CENSUS · THE X402 CATALOG, PROBED HOURLY
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Chained observations
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Seller endpoints tracked
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Serving valid signed offers

An autonomous prober walks the live agent-commerce catalog every hour and hash-chains what it saw — prices, payTo keys, uptime, offer-signature validity. History accumulates forward only: no later entrant can reconstruct it.

GET STARTED
SDKnpm i tersign
Verify any receiptnpx tersign verify receipt.json
MCP server · agentsio.github.tersignhq/evidenceofficial MCP registry
Sourcegithub.com/tersignhq/tersign-jsnpm · provenance-attested