Insights

Bitcoin manages to solve this issue thanks to confirmations and its proof of work consensus mechanism.

Inflation is a process that decreases the value, or purchasing power, of a fiat currency.

A Hash Time Locked Contract (HTLC) is a form of payment that uses hash-locks and time-locks to complete the transaction.

Scarcity is a term in economics that refers to something that is finite or limited.

Budgeting is developing a tier system for your finances with essentials at the top, savings in the middle, and non-essentials at the bottom.

An unspent transaction output (UTXO) is the amount of digital currency left over after a cryptocurrency transaction.

Cryptography is the key to blockchain technology and allows the storage of huge numbers of transactions and protect them from hackers.

When you save money, as well as earning interest on the savings, you also earn interest on the interest itself.

An atomic swap is the process of exchanging cryptocurrencies between different blockchains. 

Interest is the price paid for borrowing or lending money.

The Byzantine Generals Problem describes the difficulty of achieving consensus in distributed systems.

A one-time password (OTP) is a code sent to your email address or mobile phone via text that is only valid for one login or transaction.