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Global Market Insights

BTCUSD Today: Galaxy Eases Quantum Fears as Post-Quantum Fixes Advance March 20

March 21, 2026
5 min read
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Bitcoin quantum computing is in focus today as Galaxy Digital’s Alex Thorn says the risk is real but manageable. Developers are progressing post-quantum Bitcoin ideas, including BIP 360 P2MR and quantum-resistant signatures, while Michael Saylor’s warnings keep attention high. For Canadian investors, the key is timing and execution. The pair BTCUSD recently traded near $70,119.79. The bigger story is how fast wallets, miners, and exchanges can coordinate upgrades, and which UTXOs may be exposed if public keys sit on chain.

Galaxy tempers the threat, focus shifts to execution

Galaxy argues Bitcoin quantum computing is a credible risk but far from an existential threat. Current machines cannot break secp256k1. The path ahead is about reducing exposure and preparing upgrades, not panic. Thorn’s note stresses measured planning and clear migration steps, rather than fear. See the summary at CoinDesk for context and quotes from Galaxy’s team source.

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For Canadians trading BTC/CAD or holding through TSX-listed ETFs, the message is practical. Focus on wallet hygiene, address types, and service-provider readiness. Major custodians and exchanges will likely lead migrations once standards settle. Retail holders should avoid address reuse, track wallet updates, and follow notices from Canadian platforms. Bitcoin quantum computing talk matters, but disciplined setup and steady execution matter more.

Inside the fixes: BIP 360 and PQ fallbacks

BIP 360 P2MR proposes paying to a Merkle root that can commit to multiple spend paths. One path could be today’s keys. Another could be a post-quantum option, kept hidden until needed. This design lets users shift later without revealing extra data now. If adopted, it likely arrives via a soft-fork process, then rolls out across wallets and services as support matures.

Post-quantum Bitcoin work explores adding quantum-resistant addresses or fallback signatures, using schemes such as hash-based or lattice-based options. The aim is opt-in safety while preserving current UX. Galaxy’s research outlines how layered defenses can phase in as standards harden source. Expect staged testing, new address types, and wallet prompts that guide holders through secure moves.

Key watchpoints for investors

The main near-term concern is UTXOs with public keys already revealed on chain, including very old outputs and any reused addresses. Those are easier targets in a future quantum era. Modern best practice hides public keys until spend, reducing exposure. Canadians should avoid address reuse, prefer SegWit or Taproot addresses, and monitor whether their wallets flag at-risk UTXOs before any migration window.

Watch for Core pull requests, BIP progress, miner signaling, and wallet releases that add quantum-resistant addresses. Once features land, fees may spike as users move coins. Plan ahead with batched transactions and low-fee windows. Exchanges, custodians, and ETF providers will publish schedules. Keep firmware and apps updated, verify addresses, and test with a small amount before moving full balances.

Price, technicals, and positioning

As of March 7, 2025, BTCUSD was $70,119.79, with a day range of $69,360 to $71,384. RSI sits at 47.28, near neutral. ADX at 23.93 implies a modest trend. MACD is negative, but the histogram turned higher, signaling waning downside momentum. MFI at 74.41 shows strong inflows. Bollinger middle is $69,366. A sustained close above the upper band would strengthen the bullish case.

Meyka’s composite grade is C+ with a HOLD view. We favour steady dollar-cost averaging, risk caps, and avoiding leverage. Use SegWit or Taproot addresses and keep software current to ease a future post-quantum Bitcoin migration. For registered or taxable accounts, TSX-listed spot Bitcoin ETFs can simplify custody and reporting while you track upgrade milestones.

Final Thoughts

Bitcoin quantum computing risk is real, but the path forward looks practical. Galaxy’s view and developer progress point to planning, not panic. For Canadian investors, the checklist is clear. Use SegWit or Taproot addresses, avoid address reuse, and keep wallets and hardware updated. Monitor BIP 360 P2MR discussions, watch for quantum-resistant address standards, and follow release notes from your exchange, custodian, or ETF provider. Expect a coordinated migration window once code, miners, and wallets align. Fees may rise during peak moves, so prepare to batch and test small amounts first. Maintain a balanced plan with dollar-cost averaging and defined position sizes while you track these milestones.

FAQs

Is Bitcoin vulnerable to quantum computers today?

Today’s quantum computers cannot break Bitcoin’s secp256k1 signatures. The main future risk is for UTXOs where public keys are already exposed on chain. Developers are preparing upgrades so holders can move to safer paths before practical attacks arrive, reducing the likelihood of sudden, broad losses.

What is BIP 360 P2MR in simple terms?

It is a proposal to pay to a Merkle root that commits to multiple spend options. One option uses current keys, while another can be a post-quantum path. That lets users migrate later without revealing extra data now, improving flexibility for a staged, low-friction security upgrade.

How should Canadian investors prepare for a post-quantum Bitcoin shift?

Avoid address reuse, prefer SegWit or Taproot, and keep wallet firmware and apps updated. Follow notices from your Canadian exchange, custodian, or TSX-listed ETF. When new standards roll out, move coins during quieter fee periods, test with small amounts, and confirm addresses on trusted hardware.

What signals suggest a fast migration is coming?

Look for BIP merges, miner signaling, Core releases, and wallet updates adding quantum-resistant addresses. If a credible quantum break is announced, expect urgent guidance from exchanges, custodians, and ETF providers, fee spikes, and broad movement to new address types under a clear, time-bound plan.

Disclaimer:

The content shared by Meyka AI PTY LTD is solely for research and informational purposes.  Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.
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