Key Takeaways A Trezor-impersonation scam drained $282 million after a victim shared their seed phrase earlier this year. A full 12-word BIP39 phrase carries about 128 bits of entropy, effectively impossible to brute force. Chainalysis estimates up to 23% of all mined bitcoin, several million BTC, is permanently lost via lost keys. The Words Aren’t a Password. They’re the Money. A seed phrase, usually 12 or 24 words drawn from a standardized list of 2,048, isn’t a login credential that gates access to funds sitting somewhere else. It mathematically is the wallet. Every one of those words encodes a chunk …