store_sum — Group 8, Code 82
Store by sum proof.
Purpose
store_sum is the compact-batch sibling of 80 store. It accepts an aggregate proof instead of one full AN per coin, reducing wire size when the client already has a stable summed proof.
Legacy wire reference — verify before relying
This byte layout was restored from the pre-V2 documentation (commit ceba44b). It has not been cross-checked against the current raidax implementation in every detail.
Request body
One 5-byte DN+SN record per coin in the locker, followed by a single 16-byte aggregate SU sum and the terminator.
The sum is computed with the same XOR-accumulator algorithm used by detect_sum: convert each AN to four little-endian 32-bit integers, XOR into a 4-int accumulator, serialize the accumulator back to 16 bytes.
Response
Status only. 241 = sum verified and locker stored; 242 = sum did not match (run 80 store per-coin to find which AN is wrong).