Every agent payment needs a governed decision join. PDTR binds payment_hash to action_ref — closes x402 #2332 / PR #2666. Visa TAP complementary · UK CMA agent liability shape · 100× bind-gate volume.
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POST /api/v1/bind-payment · toll on twin · humans verify free at /verify
POST /api/v1/bind-payment
{"payment_hash":"0x…","action":"purchase","amount_atomic":1000000,"currency":"USDC"}