Learn Crypto with Bit.Fan Academy

From beginner to advanced — master exchanges, wallets and blockchain essentials

unspent outputs

How Many Bitcoins Have Never Moved? Start With the Definition

How many bitcoins have never moved depends on the definition. On-chain, unspent outputs and long-dormant coins are not the same thing.

How to Check How Many Bitcoins Someone Got

To find how many bitcoins someone got, verify the person, confirm the wallet address, and read on-chain inflows, outflows, and balance without trusting

How Bitcoin Prevents Double Spending

Bitcoin prevents double spending through network validation, block inclusion, proof of work, and confirmations that lock in one valid history.

What a Bitcoin Transaction Contains: Inputs, Outputs, and Change

A bitcoin transaction contains inputs and outputs: inputs show source, outputs set recipient and amount, and leftover becomes miner fee and change.

What Is a Bitcoin Client?

A bitcoin client is software that interacts with the Bitcoin network. It may be a wallet, a full node, or a lighter app with limited validation.

How to Check a Bitcoin Transaction

How to check a Bitcoin transaction: use a block explorer with a TXID, address, or block details to verify status, confirmations, inputs, outputs, and fees.

What a Representation of the Bitcoin Blockchain Means

A representation of the Bitcoin blockchain is a readable way to display blocks, transactions, and links without changing the chain itself.

Do Ordinals Bloat Bitcoin’s UTXO Set?

Yes, they can. Ordinals may increase UTXO count and fragmentation by changing how outputs are created and kept.