BTC SOL Security

Bitcoin Gets Quantum-Ready While Solana Voters Slash Inflation—Barely

2026-08-31

Two big stories landed this week, and they couldn't be more different. Bitcoin's engineers published a concrete plan to fend off quantum computers, while Solana's validators just barely passed a vote that'll halve the network's inflation timeline. One's about existential defence. The other's about cold economic mechanics and dramatic last-minute reversals.

Let's start with the quantum thing, because it's actually alarming if you think about it properly. Bitcoin currently relies on elliptic-curve cryptography. That's fine now. But sufficiently powerful quantum computers would crack it. Not tomorrow. But eventually. Blockstream researchers published a Bitcoin Improvement Proposal on August 27 proposing SHRINCS, a new post-quantum signature scheme built specifically for Bitcoin's actual constraints—not borrowed wholesale from academic papers.

The real innovation is compression. Hash-based post-quantum signatures are enormous compared to what Bitcoin uses now. Blockstream's team reduced them by roughly 13.23 times. That matters because transaction throughput depends on it: standard post-quantum alternatives would cripple Bitcoin to below 0.5 transactions per second. SHRINCS enables around three per second even accounting for SegWit discounts. Jonas Nick and Mikhail Kudinov, the researchers behind it, are clear-eyed: "not optimal along every axis," they wrote. "A very good trade-off among the options we have now."

The proposal has real limitations. The security proof isn't finished. No production-ready reference implementation exists yet. Botched key migration could torch people's funds. Getting it onto Bitcoin requires a soft fork and consensus from the developer and miner communities—a slow, grinding process. But Blockstream already tested it live on Liquid, their sidechain, so the concept works.

StarkWare researchers also ran an experimental quantum-safe Bitcoin transaction on the mainnet. It took hours. Cost between $150 and $200 per transaction. It's a last-resort option, full stop, not a scalable path. But it proved Bitcoin's blockchain can handle quantum safety mechanisms as it stands today.

Now, Solana's governance vote. Much more immediate. Much more drama.

Validators concluded their first binding on-chain vote with a result so narrow it was almost farcical. Proposal SGP-0002—"Double Disinflation"—passed at 67.001 percent. Just 0.334 points above the two-thirds threshold. Sixty percent of eligible stake actually participated. Twenty-five percent voted no. Seven and a half percent abstained.

Here's where it got interesting. In the closing minutes, major validators switched sides. Kraken had moved its 8.9 million SOL from support to opposition hours before the deadline, then flipped back to yes right at the end. Galaxy Digital and Drift protocol validators did the same. Without those reversals, the vote fails.

What passed? An acceleration. Double the annual disinflation rate from 15 percent to 30 percent. Solana reaches its 1.5 percent long-term inflation target in 2.8 years instead of 5.7. Over six years, that's roughly 18.9 million fewer SOL issued—about 2.6 percent less supply than the old schedule would've produced.

The tradeoffs are real. SOL holders benefit from tighter supply growth. Validators suffer: staking rewards decline as inflation falls faster. Capital probably shifts away from delegated staking toward DeFi and other on-chain uses. This vote actually tested Solana's new governance model, which lets token delegators override validator preferences. That mechanism proved decisive.

One caveat: the vote approves a direction, not an immediate change. Implementation requires further work—coordination, feature gating, mainnet activation—before actual supply reduction kicks in. Validators need to greenlight each technical step.

Bitcoin's thinking about the long game. Solana's reshaping its monetary policy right now. Both matter. Neither story ends this week.

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