historical past – When did BIP66 swap from activation to enforcement?

From BIP66:

The brand new guidelines are in impact for each block (at top H) with nVersion = 3 and a minimum of 750 out of 1000 blocks previous it (with heights H-1000..H-1) even have nVersion = 3. Moreover, when 950 out of the 1000 blocks previous a block do have nVersion = 3, nVersion = 2 blocks grow to be invalid, and all additional blocks implement the brand new guidelines.

I wrote this script to observe the variety of the final 1000 blocks which have nVersion set to three.

require_once 'jsonRPCClient.php';

$daemon = new jsonRPCClient('http://{my_user}:{my_password}@127.0.0.1:8332/');
$blkStart = 364136 - (24 * 14 * 6);

$ver3InLast1000 = 0;
for ($i = $blkStart;; $i++) {
    attempt {
        $blockHashOld = $daemon->getblockhash($i-1000);
        $blockHashNew = $daemon->getblockhash($i);
        $blockOld = $daemon->getblock($blockHashOld);
        $blockNew = $daemon->getblock($blockHashNew);
    } catch(Exception $e) {
        break;
    }

    // Do not wish to begin subtracting till have processed 1000 blocks
    if ($blockOld["version"] == 3 && ($i - $blkStart >= 1000)) {
        $ver3InLast1000--;
    }

    if ($blockNew["version"] == 3) {
        $ver3InLast1000++;
    }

    if ($i - $blkStart >= 1000) {
        echo "$i, $ver3InLast1000n";
    }

}

The end result may be present in this pastebin.

Block quantity 363724 is the block that turned on nVersion=3 enforcement for all additional blocks.