Method RescanFromTime

src/wallet/wallet.cpp:1679–1698

* Scan active chain for relevant transactions after importing keys. This should * be called whenever new keys are added to the wallet, with the oldest key * creation time. * * @return Earliest timestamp that could be successfully scanned from. Timestamp * returned will be higher than startTime if relevant blocks could not be read. */

 * returned will be higher than startTime if relevant blocks could not be read.
 */
int64_t CWallet::RescanFromTime(int64_t startTime, const WalletRescanReserver& reserver, bool update)
{
    // Find starting block. May be null if nCreateTime is greater than the
    // highest blockchain timestamp, in which case there is nothing that needs
    // to be scanned.
    CBlockIndex* startBlock = nullptr;
    {
        LOCK(cs_main);
        startBlock = chainActive.FindEarliestAtLeast(startTime - TIMESTAMP_WINDOW);
        WalletLogPrintf("%s: Rescanning last %i blocks\n", __func__, startBlock ? chainActive.Height() - startBlock->nHeight + 1 : 0);
    }

    if (startBlock) {
        const CBlockIndex* const failedBlock = ScanForWalletTransactions(startBlock, nullptr, reserver, update);
        if (failedBlock) {
            return failedBlock->GetBlockTimeMax() + TIMESTAMP_WINDOW + 1;
        }
    }
    return startTime;
}

/**
 * Scan the block chain (starting in pindexStart) for transactions