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Last updated 2026-11-05

What Is Blockchain?

A blockchain is a shared record of transactions that many independent computers keep in sync. This page explains the idea in plain language, using Bitgold as the example, so the rest of the help center has a foundation.

Who this is for

Anyone who is about to hold or send BTG and wants to understand what is actually happening behind the wallet screen. No technical background is needed.

What it is

A blockchain is a ledger: a list of entries saying which address sent how much to which other address. What makes it different from a bank's ledger is who keeps the copy. Instead of one company holding the only authoritative database, many computers — called nodes — keep their own copy and compare notes.

Transactions are grouped into blocks. Each block contains a fingerprint (hash) of the block before it, so changing an old entry would change every block after it. That chain of fingerprints is where the name comes from. Validators propose blocks and the rest of the network checks them against the same rules; a block that breaks the rules is rejected.

On Bitgold, the ledger records BTG balances and transactions. When you send BTG, your wallet signs the transaction with your private key, broadcasts it to nodes, and a validator includes it in a block. Once it is confirmed, every node updates its copy of the ledger in the same way.

Why it matters

No intermediary has to approve your transaction. There is no bank opening hours, no account freeze by the network, and no customer support button that reverses a confirmed transfer. That is the point — and the risk. The same design that removes a gatekeeper also removes the person who could undo your mistake.

The record is public. Anyone can look up an address and its transactions in a block explorer such as www.bitgold.live. Addresses are not names, but they are not anonymous either: once an address is linked to you, its history is visible.

You are responsible for the key. The network will accept a transaction from anyone who can sign it. It has no way to know that the person signing was tricked. This is why the security chapters focus on keys and signatures rather than on "reporting" a bad transaction.

Common misunderstandings

  • "The blockchain is Bitcoin." Bitcoin is one network. Bitgold is a separate EVM-compatible network with its own chain ID (618) and its own BTG coin. Concepts carry over; addresses, fees, and explorers do not.
  • "Transactions are anonymous." They are pseudonymous. Addresses are public and traceable, and exchanges routinely link them to identities.
  • "Support can reverse it." Once a transaction is confirmed, no support team, wallet vendor, or Bitgold employee can reverse it. Anyone who claims otherwise is preparing a scam.
  • "A bigger chain is automatically safer." Security depends on the specific network's validators and your own key handling, not on a marketing number.

Key takeaways

  • A blockchain is a ledger replicated across many nodes, with blocks linked by hashes.
  • Bitgold uses this ledger to record BTG balances and transfers; chain ID 618 identifies the mainnet.
  • Confirmed transactions are irreversible, and the network cannot tell that you were tricked.
  • Public does not mean anonymous: every transaction is visible in a block explorer.

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