BIPs: Bitcoin Improvement Proposals

A Bitcoin Improvement Proposal (BIP) is the formal mechanism through which changes to the Bitcoin protocol are proposed, discussed, and documented. Inspired by Python's PEP (Python Enhancement Proposal) system, BIPs provide a structured way to propose everything from consensus changes to wallet standards.

The BIP Process

The lifecycle of a BIP follows a structured path:

1. Draft: An author writes a proposal following the BIP template. It must clearly describe the problem, the proposed solution, the rationale, and backwards compatibility considerations.
2. Discussion: The draft is shared on the bitcoin-dev mailing list and other forums. Developers, researchers, and community members critique, suggest improvements, and debate the merits.
3. Accepted/Rejected: If there is broad consensus that the BIP is well-designed and beneficial, it may be accepted. This does not mean it is activated — just that the design is agreed upon.
4. Implementation: Developers write the code to implement the BIP, typically in Bitcoin Core.
5. Activation: The change is deployed through the activation mechanism (miner signaling, flag day, etc.).

Types of BIPs

Not all BIPs are equal. They fall into three categories:

• Standards Track BIPs: Changes that affect the Bitcoin protocol or network — consensus rules, transaction formats, block validation. These are the most consequential and require the broadest consensus. Examples: BIP 141 (SegWit), BIP 340-342 (Taproot/Schnorr).
• Informational BIPs: Design guidelines or general information that doesn't change the protocol. Example: BIP 39 (mnemonic seed phrases — the 12/24 word recovery phrases you use to back up wallets).
• Process BIPs: Changes to the BIP process itself or organizational procedures. Example: BIP 2 (the BIP workflow document).

Notable BIPs Every Bitcoiner Should Know

BIP	Name	Significance
BIP 32	HD Wallets	Hierarchical Deterministic wallets — one seed generates unlimited addresses
BIP 39	Mnemonic Phrases	The 12/24-word seed phrases used to backup wallets
BIP 141	SegWit	Segregated Witness — fixed malleability, increased effective block capacity
BIP 340	Schnorr Signatures	More efficient, private multi-signature transactions
BIP 341	Taproot	Enhanced privacy and smart contract flexibility
BIP 174	PSBT	Partially Signed Bitcoin Transactions — enables hardware wallet coordination

Anyone Can Write a BIP

One of Bitcoin's most important properties is that anyone can write a BIP. You don't need permission, credentials, or corporate backing. If your proposal is technically sound and addresses a real need, it will be evaluated on its merits. This open process is a cornerstone of Bitcoin's decentralized governance.

For Sri Lankan developers and Bitcoin enthusiasts, the BIP process is an invitation. If you identify a problem or improvement — particularly one relevant to developing economies or regions with limited banking infrastructure — you can propose it to the global Bitcoin community through a BIP.