Public Research

Risq Index

A continuously updated map of the Bitcoin UTXO set ranked by exposure to a cryptographically relevant quantum adversary. Methodology is open; data refreshes daily.

4.2M BTC

At-risk supply

~25%

Of circulating supply

1,184

Critical addresses

24h

Refresh cadence

Top exposures

updated 14:02 UTC

#	Address	Balance	Risk	Note
01	1FeexV6...DiU	79,957 BTC	Critical	Reused public key
02	12ib7dA...PoX	31,000 BTC	Critical	P2PK, key exposed
03	bc1qgdj...x4r	28,150 BTC	High	Address reuse pattern
04	3M219K...kQa	26,200 BTC	High	Multi-sig P2SH
05	1P5ZED...3kT	20,000 BTC	Critical	P2PK legacy
06	bc1q0x...87s	17,400 BTC	Medium	Unused output, no key exposure
07	37XuVS...ENo	14,800 BTC	High	Witness pattern recoverable
08	1Cz6Ax...uXp	12,000 BTC	Critical	P2PK, satoshi-era

Risk classification reflects whether a public key is recoverable on-chain today. It is not a prediction of when a quantum attack becomes practical, only of which outputs would be reachable when it does.