【安全加密】交易纠纷日志链取证：找回流程的证据链设计

local chainSeq = 0
local function logTransfer(item, from, to, scene)
    chainSeq = chainSeq + 1
    setsysvarex("XFER_" .. chainSeq, item .. "|" .. from .. ">" .. to .. "|" .. scene .. "|" .. os.time(), 1)
end

local function traceItem(item)
    local hits = {}
    for i = 1, chainSeq do
        local rec = getsysvar("XFER_" .. i)
        if rec ~= nil and string.find(rec, item, 1, true) then
            hits[#hits + 1] = rec
        end
    end
    return hits
end