SegWit is an update to the bitcoin protocol that moves signature data outside the main part of the block, increasing its efficiency and helping to address scalability issues.

Silk Road was an underground online marketplace shut down by the authorities, which accepted payment in bitcoins and had a notable impact on the early fame of cryptocurrency.

A confirmation is the inclusion of a transaction in a block of the blockchain and the fixing of its validity. The more confirmations a transfer gathers, the more reliably it is considered irreversible.

Bitcoin's public ledger is a publicly accessible record of all the network's transactions since its launch. Any participant can verify operations, which ensures the transparency of the blockchain.

A millibitcoin (mBTC) is one thousandth of a bitcoin, that is, 0.001 BTC. This fractional unit is used to conveniently display small amounts in this cryptocurrency.