# Bitcoin SHRINCS Draft Sets 5,777-Byte Signature for Counter Loss

> Bitcoin's quantum-resistant signature system SHRINCS requires 5,777-byte fallbacks when counters are lost.
- Title: Bitcoin SHRINCS Draft Sets 5,777-Byte Signature for Counter…
- Summary: Bitcoin's quantum-resistant signature system SHRINCS requires 5,777-byte fallbacks when counters are lost. SHRINCS, a draft quantum-resistant Bitcoin…
- Keywords: bitcoin, shrincs, quantum-resistant, signature, counter, hardware wallet, crypto, finance, Draft, Sets, 777-Byte, Loss
- Source: TokenPost — https://tokenpost.com/news/technology/36910
- Published: 2026-10-21T18:11:32+00:00
- Read time: 1 min
- Topics: bitcoin, shrincs, quantum-resistant, signature, counter, hardware wallet, crypto, finance
## SHRINCS Draft
SHRINCS is a draft quantum-resistant signature system for Bitcoin that requires 5,777-byte signatures when counters are lost.
## Counter State Fallback
SHRINCS uses 548 to 4619-byte signatures when counters are established but requires 5777-byte fallbacks if counters are lost.
## Security Implications
SHRINCS prevents forgery by requiring counters to be saved before signing and using stateless methods when counters are lost.
## Key takeaway

SHRINCS, a draft quantum-resistant Bitcoin signature system, uses 5,777-byte signatures when counters are lost.