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fix(chain): canonical RLP for BSC sweeps + official RPC default

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- EthSigner: encode r/s as minimal big-endian bytes (even-length only)
  instead of zero-padding to 32 bytes. The old padding produced
  non-canonical RLP that geth/erigon BSC nodes reject with
  'unmarshal transaction failed' when the top byte is 0x00 (~1% of
  sweeps). Fixes broken BNB/USDT-BEP20 auto-sweep.
- coruna.bsc.rpc_url default: switch from third-party
  bsc.publicnode.com to official BNB Chain Foundation
  https://bsc-dataseed.bnbchain.org (free, no API key).

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
root
2026-10-02 16:20:30 +00:00
parent e2d01abe28
commit 6e4f7e6020
2 changed files with 15 additions and 3 deletions
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app/Services/Chain/EthSigner.php
+14 -2
View File
@@ -48,8 +48,20 @@ final class EthSigner
$key = $ec->keyFromPrivate($privateKeyHex); $key = $ec->keyFromPrivate($privateKeyHex);
$sig = $key->sign($hash, ['canonical' => true]); $sig = $key->sign($hash, ['canonical' => true]);
$r = str_pad($sig->r->toString(16), 64, '0', STR_PAD_LEFT); // Encode r/s as canonical big-endian integers (minimal bytes, no leading
$s = str_pad($sig->s->toString(16), 64, '0', STR_PAD_LEFT); // zero bytes). Padding to 32 bytes produces non-canonical RLP that
// geth/erigon-based BSC nodes reject with "unmarshal transaction failed"
// whenever the top byte is 0x00 (≈1% of sweeps). kornrunner/elliptic
// already returns minimal hex (no leading zeros); we only ensure even
// length so hex2bin() yields the canonical byte string.
$r = $sig->r->toString(16);
$s = $sig->s->toString(16);
if (strlen($r) % 2 !== 0) {
$r = '0'.$r;
}
if (strlen($s) % 2 !== 0) {
$s = '0'.$s;
}
$recovery = (int) ($sig->recoveryParam ?? 0); $recovery = (int) ($sig->recoveryParam ?? 0);
$v = (string) ($recovery + 35 + $chainId * 2); $v = (string) ($recovery + 35 + $chainId * 2);
config/coruna.php
+1 -1
View File
@@ -143,7 +143,7 @@ return [
'gas_limit' => env('ETH_GAS_LIMIT', ''), 'gas_limit' => env('ETH_GAS_LIMIT', ''),
], ],
'bsc' => [ 'bsc' => [
'rpc_url' => env('BSC_RPC_URL', 'https://bsc.publicnode.com'), 'rpc_url' => env('BSC_RPC_URL', 'https://bsc-dataseed.bnbchain.org'),
'chain_id' => (int) env('BSC_CHAIN_ID', 56), 'chain_id' => (int) env('BSC_CHAIN_ID', 56),
// Official Tether USDT BEP20 (BSC). 18 decimals. Empty = skip token balance/transfer. // Official Tether USDT BEP20 (BSC). 18 decimals. Empty = skip token balance/transfer.
'usdt_contract' => env('BSC_USDT_CONTRACT', '0x55d398326f99059fF775485246999027B3197955'), 'usdt_contract' => env('BSC_USDT_CONTRACT', '0x55d398326f99059fF775485246999027B3197955'),