Bitcoin works without a trusted middleman: instead of a central authority keeping the ledger and deciding who owns what, every user runs software that verifies each transaction for themselves. Trust is placed not in a bank, but in open mathematics anyone can inspect. This is exactly how Andreas Antonopoulos explains it in Mastering Bitcoin — by tracing one transaction from start to record.
What are the parts of the Bitcoin system?
Just three: wallets holding keys that prove ownership, transactions that spread across a global network of computers, and miners who compete computationally to lock transactions into one agreed record called the blockchain. No headquarters, no central server, no clerk who approves or denies.
How does a single transaction cross the network?
Imagine Sara buys coffee from Mohammed. Her wallet signs the transaction with her private key (an unforgeable signature), then broadcasts it. Thousands of computers worldwide receive it and verify: does Sara really hold this amount? Is the signature valid? If so, a miner bundles it with others into a block and adds it to the blockchain. Within minutes, Mohammed sees the money confirmed — with no bank in the middle.
Why can this record not be forged?
The blockchain is a distributed journal: a copy lives on tens of thousands of machines, each checking every block. To forge a transaction, an attacker would have to fool most of the network at once — so computationally expensive that it is not worth attempting. Security comes not from a guard, but from everyone being a witness.
How can I see this for myself?
Here decentralized transparency completes itself: anyone can open a blockchain explorer (like mempool.space), enter a transaction, and see its full details — amount, time, confirmations — with no one's permission. There is no secret statement held by an institution; the ledger is public to all, while identities stay behind pseudonymous addresses. Total openness of data, with privacy for people.
By the numbers
Bitcoin produces a new block roughly every 10 minutes. The supply cap is 21 million coins and never grows. The first transaction happened in 2009, and the network has not stopped for a single day since — because it is not a company that can be shut down, but a protocol everyone runs.
What does this have to do with Islamic finance?
The transparency that makes every transaction publicly verifiable is precisely what a Sharia contract needs: clear evidence, no ambiguity (gharar), and no middleman profiting from a loan (riba). Qist builds on this foundation: Murabaha contracts on the Base network where every step — asset ownership, price, installments — is recorded and verifiable by any party, with no bank owning the books. Technical transparency becomes a tool for Sharia-based justice.
Sources
This piece is based on ideas from Chapter 2, "How Bitcoin Works," of Mastering Bitcoin (3rd edition) by Andreas Antonopoulos and David Harding (CC BY-SA 4.0), and on Satoshi Nakamoto's white paper (2008). Ideas are re-expressed in plain language; matters of Sharia ruling are referred to qualified scholars.
Frequently Asked Questions
Do I need a bank to use Bitcoin?
No. Anyone with a wallet and a private key can send and receive directly over the network, with no institution's approval.
How long does a transaction take?
It appears within seconds on the network and is usually confirmed within one block (~10 minutes), gaining more confirmations with each later block.
Are my transactions secret?
The ledger is public and visible to all, but your identity stays behind a pseudonymous address that does not carry your name directly.
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Last updated: 2026-07-29