Signed receipt chain
Every call would return a signed receipt of Myriax's record: the route, the model the upstream declared, the price quoted and charged, and the Defense decision. Receipts would chain per account and check offline with one command.
{
"receipt": "rcpt_01JBX4K9",
"event": "settled",
"model": "deepseek/deepseek-v3.2",
"upstream": "provider-a",
"quoted_usd": "0.000412",
"charged_usd": "0.000398",
"defense": "allow",
"prev": "sha256:9f2c…e41a",
"sig": "ed25519:Q2h…Zw"
} myriax receipts verify rcpt_01JBX4K9.json ok: signature valid, chain intact