Bitcoin developers are accelerating practical work on post-quantum security while Solana validators have narrowly approved a faster reduction in future SOL issuance. The two developments address different protocol risks: Bitcoin is preparing for a cryptographic threat that remains uncertain in timing, while Solana has voted to modify the trajectory of its monetary policy.
For Bitcoin, urgency comes less from evidence that quantum computers can already compromise the network than from the time required to replace deeply embedded cryptography. The National Institute of Standards and Technology says experts’ estimates for cryptographically relevant quantum computers range from several years to decades, while cryptographic migrations themselves can take 10 to 20 years. That long transition period is pushing Bitcoin researchers toward testing migration paths well before an attack becomes technically feasible.
Bitcoin Tests Multiple Quantum Defenses
One approach is SHRINCS, a compact hash-based signature scheme being developed specifically around Bitcoin’s block-space constraints. The draft SHRINCS specification combines smaller stateful signatures with a larger stateless recovery path, although its formal security proof remains unfinished. Blockstream has also benchmarked post-quantum signatures on hardware wallets, moving the discussion beyond theoretical cryptography and into signing-device constraints. The engineering challenge is to add quantum resistance without making signatures prohibitively large or wallet recovery excessively fragile.
A separate technique has already reached Bitcoin mainnet. StarkWare said its Quantum-Safe Bitcoin experiment produced a quantum-resistant transaction on August 26 without changing Bitcoin’s consensus rules. The construction relies on hash-based spending conditions but currently requires specialized transaction handling. These experiments demonstrate possible defensive paths, not a network-wide quantum upgrade or evidence that Bitcoin is already quantum-safe.
Solana Vote Accelerates Disinflation
Solana’s change is more immediate but still requires implementation. SGP-0002 narrowly cleared the required two-thirds threshold with 67.001% support and 60.7% participation. The underlying SIMD-0550 proposal doubles annual disinflation from 15% to 30% while leaving the terminal inflation rate unchanged at 1.5%. The modeled result is approximately 18.9 million fewer SOL issued over six years, not an immediate burn of existing tokens.
Under the proposal’s assumptions, Solana would reach its 1.5% terminal inflation rate in roughly 2.8 years, around the first half of 2029, instead of approximately 5.7 years under the previous path. Nominal staking yields would also fall faster, with the proposal modeling a decline from 5.84% currently to about 4.34% after one year under a 68% staking-participation assumption. Lower issuance reduces future dilution but simultaneously lowers the inflation-funded revenue available to validators and delegators.
The governance approval does not itself flip the inflation parameter immediately. SGP-0002 states that implementation depends on SIMD-0550 and subsequent activation through Solana’s normal feature-gate process. The vote establishes network support for faster disinflation, while the actual supply effect begins only after the protocol change is deployed.
Together, the developments illustrate two forms of long-term protocol management. Bitcoin researchers are building cryptographic migration options before quantum computing becomes an operational threat, while Solana stakeholders are using governance to deliberately reduce future issuance today. In both cases, execution matters more than the headline: Bitcoin still needs standards and wallet adoption, while Solana must implement the approved monetary change without undermining validator economics.
