A group of Bitcoin developers wants to make your wallet unspendable in five years alledgedly as protection from a quantum computer that may or may not exist by then.

This is BIP-361, and it deserves a clear-eyed read.

The proposal is authored by six contributors, including Jameson Lopp, and filed in Bitcoin's official improvement proposal repository. It is currently a draft. It is not yet law. But the conversation it has ignited cuts to the heart of what Bitcoin actually is.

Here's the plan:

Year 3 post-activation — no new funds can be sent to legacy (ECDSA/Schnorr) addresses.
Year 5 post-activation — spending from legacy addresses becomes invalid. Period.
Phase C (undefined timeline) — a potential zero-knowledge recovery mechanism, pending further research, that may require a hard fork to implement.

The threat the authors cite is real. Over 34% of all bitcoin has an exposed public key on the blockchain. A sufficiently advanced quantum computer could derive private keys from that public information. Academic timelines now estimate this risk materialises somewhere between 2027 and 2030.

But here's the tension nobody is talking about loudly enough.

Bitcoin was built on one promise above all others: not your keys, not your coins. The inverse — your keys, your coins, was supposed to be inviolable. BIP-361 introduces a third condition: your keys, your coins, until we decide the risk is too high.

The authors are aware of this. They frame Phase B not as confiscation but as a defensive incentive, a hard deadline to overcome the upgrade inertia that has historically plagued Bitcoin for years. They argue that doing nothing is also a choice, and a more dangerous one.

That argument has merit. So does the counter.

What happens to coins that cannot be migrated? Satoshi's holdings. Wallets from collapsed exchanges. Lost seed phrases. Under Phase B, those funds are frozen permanently. The BIP frames this as supply reduction echoing Satoshi's line that lost coins make everyone else's worth slightly more. Critics frame it as a protocol-level seizure by consensus.

Both framings are honest. The question is which one you think Bitcoin should be. This is not FUD, not hype. It is a serious proposal in active deliberation, backed by credible researchers, facing credible objections.

Read the actual BIP before forming an opinion. The link to github is in the comments.

#Bitcoin #BIP361 #QuantumComputing #Crypto #Web3 #Blockchain