Fireblocks: 6.7M–7M BTC sit behind already-exposed public keys
- —Roughly 6.7M–7M BTC sit behind public keys already visible onchain
- —Satoshi-era P2PK outputs expose the public key from creation
- —P2PKH and P2WPKH hide keys until first spend, then they stay visible
- —Fireblocks cut Ethereum post-quantum signature verification from 8.09M to 1.23M gas
Why it matters: The quantum threat is still theoretical, but wallet preparation and UTXO migration could take years, so institutions should start rotating addresses now.
Source: crypto.news