Three months of committee debate produced a 94-page draft. We read it. Here is what changes for issuers, exchanges, and holders under the current text.
A blockchain is a database that is maintained simultaneously by many computers rather than a single server. Records are grouped into blocks. Each block contains a cryptographic reference to the block before it, forming a chain. Altering any historical record would require recomputing every subsequent block — a task that becomes prohibitively expensive as the chain grows.
A blockchain does not require a cryptocurrency to function. Many enterprise deployments use private blockchains with no associated token.
The combination of distributed storage and cryptographic linking is what makes the record difficult to alter without detection. It does not make the record impossible to alter — that depends on who controls a majority of the network's computing power or stake.
Consensus is the process by which independent nodes agree on which transactions are valid and in what order they occurred. Without a trusted central authority, networks need a mechanism to reach agreement.
Proof-of-work, used by Bitcoin, requires nodes to expend computational energy to propose new blocks. The cost makes cheating expensive. Proof-of-stake, used by Ethereum since 2022, requires nodes to lock up capital instead. Both approaches have different security tradeoffs.
Neither mechanism guarantees finality instantly. Bitcoin considers a transaction settled after six confirmations — roughly one hour. Ethereum reaches probabilistic finality in under a minute under normal conditions.
Blockchain accounts are controlled by cryptographic key pairs. The private key is a large random number that should never be shared. The public key is derived from the private key through a one-way mathematical function — deriving the private key from the public key is computationally infeasible with current hardware.
A wallet address is derived from the public key. When you send funds, you sign the transaction with your private key. The network verifies the signature using your public key without ever seeing the private key itself.
Losing a private key means losing access to the associated funds permanently. There is no password reset mechanism on a public blockchain.
A smart contract is code stored on a blockchain that executes automatically when predetermined conditions are met. Once deployed, the code runs exactly as written — no party can unilaterally change its behaviour.
This removes the need for a trusted intermediary to enforce an agreement, but introduces different risks. Bugs in smart contract code are often permanent and exploitable. Several hundred million dollars have been lost to contract vulnerabilities since 2016.
Auditing does not guarantee security. Multiple audited contracts have subsequently been exploited. It reduces risk; it does not eliminate it.
A layer 2 is a separate network that processes transactions off the main chain and periodically settles the results on it. The goal is higher throughput and lower fees while inheriting some security properties from the base layer.
Rollups — the dominant current approach — bundle many transactions into a single proof submitted to Ethereum. Optimistic rollups assume transactions are valid and allow a challenge period. Zero-knowledge rollups generate a cryptographic proof of correctness with each batch.
Layer 2 networks have their own trust assumptions, sequencer risks, and withdrawal periods. They are not identical in security to the base chain.
Spot trading fees, withdrawal limits, and regulatory status for the five largest exchanges by verified volume. Data as of August 2026. This table contains affiliate links. Fees are indicative; verify current rates before trading.
| Exchange | Maker fee | Taker fee | UK regulated | PoR published | Affiliate |
|---|---|---|---|---|---|
| Coinbase | 0.40% | 0.60% | FCA registered | Yes | Open account → |
| Kraken | 0.16% | 0.26% | FCA registered | Yes | Open account → |
| Binance | 0.10% | 0.10% | Not FCA registered | Yes | Open account → |
| OKX | 0.08% | 0.10% | Not FCA registered | Yes | Open account → |
| Bitstamp | 0.30% | 0.40% | FCA registered | Partial | Open account → |
CryptoFacts earns a commission if you open an account via our links. This does not affect our editorial assessment. We do not accept payment to alter comparison rankings. Crypto assets are high-risk investments. The value of your holdings can fall to zero. Capital at risk.