Blockchain forensics involves the use of investigative techniques to analyze transactions on public ledgers. It helps in tracing the flow of funds, identifying the origin and destination of transactions, and collecting evidence for law enforcement agencies. Forensics tools can analyze relationships between addresses, detect patterns of illicit activities such as money laundering or fraud, and provide actionable insights to improve security. This field has grown in importance as cryptocurrencies have become more widely used, necessitating greater scrutiny and transparency.