In what ways is ECDSA malleable? How has this impacted bitcoin transactions in the past and does it still impact them today? Are there solutions to this malleability?

An introduction to Segregated Witness ‘SegWit’, some of the benefits and tradeoffs associated with the upgrade

Questions from Week 1 of the Chaincode Labs remote seminar

A look into how development worked historically in Bitcoin, how bugs and chainsplits were handled and how they are handled now

What other systems and work did Bitcoin build on top of? What was Bitcoin’s key innovation that had not yet been implemented?

A look at the bitcoin whitepaper, transaction irreversibility and SPV nodes

Setup, usage and restore of Coldcard with Bitcoin Core and Specter Desktop.