#ReusedBitcoinAddressesHold4.33MBTC
WHAT IT MEANS AND HOW TO PREVENT IT 🛡️
Did you see this hashtag and not understand it? It’s a huge on-chain alert.
According to Glassnode, 4.33 million BTC (21.5% of the entire circulating supply) are currently sitting in reused addresses. That’s up 14% over the past year. Add in old P2PK-type addresses, and that makes 6.26 million BTC with public keys already exposed on the blockchain—31% of all Bitcoin.
⚠️ Why should this get your attention?
Bitcoin was designed to use one new address per transaction. When you reuse the same address to receive funds multiple times and then SPEND from it, you expose your public key. Today, this compromises your privacy, but in the future, with advances in quantum computing, this exposure could become a real vulnerability. Exchanges are part of the picture: 1.8M $BTC of them are in this situation.
HOW TO OPERATE SAFELY: PREVENTION CHECKLIST 👷
1. For $BTC :
• Use modern HD wallets (Sparrow, Electrum, BlueWallet, Trezor, Ledger); they already generate a new address for each incoming transaction. Don’t reuse addresses.
• Enable Coin Control and choose which UTXO to spend yourself.
• Move your old BTC that have already been spent once to a new SegWit address (bc1q...) or Taproot address (bc1p...). This clears the exposure.
• Avoid old addresses that start with 1...
2. Conservative approach
• Keep separate wallets: a hot wallet for trading on an exchange and a cold (hardware) wallet for HODLing.
• Don’t sign with your main wallet on an unfamiliar website. Use a throwaway wallet.
• Always revoke permissions after using a contract, on revoke.cash or BscScan.
Golden rule:
Received funds? Use a new address. Spent from it? Don’t receive funds to it again. Long-term HODLing? Hardware wallet + an address that has never been spent from.
WHAT IT MEANS AND HOW TO PREVENT IT 🛡️
Did you see this hashtag and not understand it? It’s a huge on-chain alert.
According to Glassnode, 4.33 million BTC (21.5% of the entire circulating supply) are currently sitting in reused addresses. That’s up 14% over the past year. Add in old P2PK-type addresses, and that makes 6.26 million BTC with public keys already exposed on the blockchain—31% of all Bitcoin.
⚠️ Why should this get your attention?
Bitcoin was designed to use one new address per transaction. When you reuse the same address to receive funds multiple times and then SPEND from it, you expose your public key. Today, this compromises your privacy, but in the future, with advances in quantum computing, this exposure could become a real vulnerability. Exchanges are part of the picture: 1.8M $BTC of them are in this situation.
HOW TO OPERATE SAFELY: PREVENTION CHECKLIST 👷
1. For $BTC :
• Use modern HD wallets (Sparrow, Electrum, BlueWallet, Trezor, Ledger); they already generate a new address for each incoming transaction. Don’t reuse addresses.
• Enable Coin Control and choose which UTXO to spend yourself.
• Move your old BTC that have already been spent once to a new SegWit address (bc1q...) or Taproot address (bc1p...). This clears the exposure.
• Avoid old addresses that start with 1...
2. Conservative approach
• Keep separate wallets: a hot wallet for trading on an exchange and a cold (hardware) wallet for HODLing.
• Don’t sign with your main wallet on an unfamiliar website. Use a throwaway wallet.
• Always revoke permissions after using a contract, on revoke.cash or BscScan.
Golden rule:
Received funds? Use a new address. Spent from it? Don’t receive funds to it again. Long-term HODLing? Hardware wallet + an address that has never been spent from.