op-reth/op-geth sepolia now run op-node consensus-layer sync (empty DB is never
P2P-backfilled) with --disable-discovery, derive L1 via debug_geth against an
operator-set full-history Sepolia RPC (SUPERSEED_SEPOLIA_L1_EXECUTION_RPC, falling
back to ETHEREUM_SEPOLIA_EXECUTION_RPC), and serve a genesis.json with the invalid
top-level excessBlobGas/blobGasUsed nulls removed (eip1559DenominatorCanyon=250
retained). Regenerated from the vibe-node generator.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>