Glassnode co-founder Rafael Schultze-Kraft said, citing on-chain data, that addresses holding about 6.26 million BTC have publicly exposed keys, equal to 31.2% of the current supply. He said that share was higher than 24.8% at the start of 2021. In his breakdown, roughly 4.33 million BTC were exposed because of address reuse, while about 1.94 million BTC were linked to script types. Schultze-Kraft also stressed that the figures do not mean a quantum attack is now practically feasible. He added that the data should not be used to assess the security of exchanges or custody providers. The remarks focus on address and script-level exposure seen in blockchain data, rather than offering a judgment on whether any specific institution faces a direct security threat.
According to ChainCatcher, Glassnode co-founder Rafael Schultze-Kraft said, based on on-chain data, that the public keys of addresses holding about 6.26 million BTC have been exposed, representing 31.2% of the current supply. He said that figure was higher than 24.8% at the beginning of 2021.
In the breakdown he shared, about 4.33 million BTC were exposed because of address reuse, while roughly 1.94 million BTC were related to script types.
Schultze-Kraft said the statistic does not mean a quantum attack is already practically feasible. He also said the data cannot be used to assess the security of exchanges or custody institutions.
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