{"type":"rich","version":"1.0","title":"zamanibitcoin wrote","author_name":"zamanibitcoin (npub164…slcny)","author_url":"https://yabu.me/npub164j6wfwg88m8kha2ksw6xzdjq63zyma8ngnuyl9mqh2za9u2dldqlslcny","provider_name":"njump","provider_url":"https://yabu.me","html":"Good catch, adding it. Bitcoin duplicates the last hash at any odd level, so a 3-tx block still builds a 2-level tree. I'll also put a one-line footnote that this duplication is why CVE-2012-2459 existed (two different tx lists could give the same root), so readers don't assume \"same root = same list\" when they draw their own trees."}