TPM 2.0 playground

Tue, 01 Sep 2026 00:00:00 +0000

There is a TPM in almost every machine you own, and almost nobody has ever seen one work. It sits on a bus, speaks a terse binary protocol, and the literature about it is a 1,500 page specification. This page puts one on your desk. The hardware is simulated and the code is not. What runs here is ms-tpm-20-ref, Microsoft’s TPM 2.0 reference implementation, the codebase the TCG specification itself is generated from, compiled to WebAssembly. Same wire format and same state machine as the chip in your laptop.

Raw transaction decoder

Thu, 20 Aug 2026 00:00:00 +0000

A raw transaction is a byte string with no field names and no delimiters. Every explorer and wallet shows you its interpretation of those bytes. This page shows the bytes themselves and names each one, for ten chains. Paste a transaction below, or start from one of the examples. The first Bitcoin one is the first Bitcoin payment ever made.

tools on 808bits

TPM 2.0 playground

Raw transaction decoder