{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are balances tracked and determined in a blockchain?","a":"The balance in a blockchain is tracked and determined in a decentralized manner. Blockchain technology employs a concept called distributed ledger, in which each participant (known as a node) possesses a complete copy of the entire blockchain. When a user sends a digital currency (such as  Bitcoin), the transaction information is propagated throughout the blockchain network to all nodes. Upon receiving the transaction information, nodes add it to their local ledgers and validate it. The validation process includes checking the validity of the transaction, ensuring the sender has sufficient balance, and preventing double spending, among others.↵↵Once a transaction is verified and approved, it is bundled into a new block. A block contains multiple transactions."}]}],"pr":"fedb164fd45b22b6f5cda91342d6bf56cd74f38f4a498cccb73340f34b2ed96f"}