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fourpath-live: assert canonical 0x9999 settlement precompile (0x9010 deprecated/removed v0.5.53); add -v4-addr flag

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This commit is contained in:
zeekay
2026-06-21 22:56:37 -07:00
parent 77d337e20d
commit 792958b848
1 changed files with 14 additions and 11 deletions
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cmd/fourpath-live/main.go
+14 -11
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@@ -432,7 +432,8 @@ func wsCross(wsURL, user, symbol string, limit, size float64) []zapwire.Fill {
func main() {
var (
venueAddr = flag.String("venue", "127.0.0.1:9099", "live D-Chain venue ZAP address (host:port)")
cchainRPC = flag.String("cchain-rpc", "", "optional C-Chain EVM JSON-RPC; if set, assert code at 0x9010")
cchainRPC = flag.String("cchain-rpc", "", "optional C-Chain EVM JSON-RPC; if set, assert code at the settlement precompile")
v4Addr = flag.String("v4-addr", "0x0000000000000000000000000000000000009999", "canonical V4 settlement precompile address on C-Chain (0x9999; 0x9010 deprecated)")
runTag = flag.String("run", "", "unique run tag (default: wall-clock ns) to namespace symbol+users")
)
flag.Parse()
@@ -468,9 +469,9 @@ func main() {
fmt.Printf("=== FOUR-PATH LIVE PROOF (devnet) ===\n")
fmt.Printf(" venue=%s symbol=%s\n", *venueAddr, symbol)
// Optional: assert the on-chain V4 precompile is present at 0x9010.
// Optional: assert the on-chain V4 settlement precompile is present (0x9999 canonical).
if *cchainRPC != "" {
assertPrecompile(*cchainRPC)
assertPrecompile(*cchainRPC, *v4Addr)
}
cli, closeCli := dialVenue(*venueAddr)
@@ -621,16 +622,18 @@ func hashTag(s string) uint64 {
return h & 0xffffff
}
// assertPrecompile confirms the V4 precompile is deployed at 0x9010 on the
// C-Chain EVM (eth_getCode returns non-empty), proving the on-chain leg of the
// V4 path exists where the engine_zap frame is relayed from.
func assertPrecompile(rpcURL string) {
body := `{"jsonrpc":"2.0","id":1,"method":"eth_getCode","params":["0x0000000000000000000000000000000000009010","latest"]}`
// assertPrecompile confirms the V4 settlement precompile is deployed at addr on
// the C-Chain EVM (eth_getCode returns non-empty), proving the on-chain leg of
// the V4 path exists where the engine_zap frame is relayed from. The canonical
// address is 0x9999 (the V4-shaped receipt-settlement precompile); 0x9010 was
// deprecated and removed in precompile v0.5.53.
func assertPrecompile(rpcURL, addr string) {
body := fmt.Sprintf(`{"jsonrpc":"2.0","id":1,"method":"eth_getCode","params":["%s","latest"]}`, addr)
req, _ := http.NewRequest("POST", rpcURL, strings.NewReader(body))
req.Header.Set("content-type", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil {
die("eth_getCode 0x9010: %v", err)
die("eth_getCode %s: %v", addr, err)
}
defer resp.Body.Close()
var out struct {
@@ -640,7 +643,7 @@ func assertPrecompile(rpcURL string) {
die("eth_getCode decode: %v", err)
}
if out.Result == "" || out.Result == "0x" {
die("V4 precompile 0x9010 has no code on C-Chain (%q)", out.Result)
die("V4 settlement precompile %s has no code on C-Chain (%q)", addr, out.Result)
}
fmt.Printf(" [V4] on-chain precompile 0x9010 present on C-Chain (eth_getCode=%s)\n", out.Result)
fmt.Printf(" [V4] on-chain settlement precompile %s present on C-Chain (eth_getCode=%s)\n", addr, out.Result)
}