Cartulary, an exploratory design probe

Receipt chain · PX-585002

$10.25

compute-buyer → Vector Inference Ltd · USDC on Base

Chain verified at 12:34 UTC: 5 of 5 hashes recomputed correctly.

1 initiatedagent:compute-buyer

23 Oct, 10:52 UTC

{
  "amount": "10.249745",
  "mandate": "bd2e71c8-f9c5-4ed3-9b65-b44d131c7c49",
  "currency": "USD",
  "protocol": "x402",
  "instrument": "usdc-base",
  "counterparty": "Vector Inference Ltd",
  "external_ref": "PX-585002"
}

prev — → this 6a3b8227…dea6 · recomputed ✓

2 evaluatedcartulary:policy

23 Oct, 10:52 UTC

{
  "result": "pass",
  "rules_hash": "9c4f3b9707af0a5ed640754df7ff27c7c7e1371703a52a2ea0684663a0eacdd1",
  "policy_version": 3
}

prev 6a3b8227…dea6 → this df1c9001…5713 · recomputed ✓

3 screenedcartulary:screening
23 Oct, 10:52 UTC
```
{
  "result": "clear",
  "list_version": "OFAC SDN 2026-08-01"
}
```
prev df1c9001…5713 → this 35fe3d7c…d52e · recomputed ✓
4 allowedcartulary:policy
23 Oct, 10:53 UTC
```
{}
```
prev 35fe3d7c…d52e → this 0af76211…1416 · recomputed ✓
5 settledcartulary:settlement
23 Oct, 10:53 UTC
```
{
  "settlement_ref": "base:0080c038-6c1e"
}
```
prev 0af76211…1416 → this ebf127fa…fd5f · recomputed ✓