- 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>
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