Hackers have already drained $16.69 billion from crypto projects, and weak private keys sit behind about 40% of that damage. Google's answer, shown to banks in New York today, splits the key into pieces so no single hacked machine can open the vault.
Key points:
- Google showed off a new system called Multi-Party Compute at its first digital assets event in New York today. It is in private testing now, with a full launch aimed at early 2027.
- Instead of one secret key, the system breaks it into pieces spread across different machines, and it checks each transfer against the bank's own rules before anything gets signed.
- Alphabet already uses it for its own coins on Ethereum and Solana, while a few big banks are testing it without being named.
Here is the simple version. A private key is the secret that lets someone move coins, so anyone who steals it can empty the wallet. Google's system never stores that whole secret in one place. It keeps one piece in Google Cloud, another on the bank's own machines, and a third with a different provider, and all the pieces have to work together before a transfer goes through. My own read is that banks will not trust this just because Google built it. They will poke at it for months first, and the early-2027 launch date is the real test.
Today, the problem is hard to ignore. Chainalysis found that stolen keys were behind 43.8% of crypto stolen in 2024, and DeFiLlama put total hack losses at $16.69 billion as of June, with roughly 40% tied to key thefts. Two cases from this year alone show how fast it happens: Resolv lost about $25 million in March, and Humanity Protocol lost more than $32 million in June. Google says its system can later add post-quantum signing, but that part is still a future upgrade, not something banks get today.
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Who is Google up against?
Google is walking into a market where firms like Fireblocks, Fordefi, and BitGo already do this work for a living. Its pitch is that banks may rather trust a neutral tech supplier than a rival that also runs its own custody business. That pitch has a hole, though: Even with the key split up, banks still lean on Google for parts of the software and the rules that approve transfers, and a badly set rule can still let a bad transfer through. In early 2027, we will see whether the big banks testing it now put their names on it or quietly walk away.
For traders, the short version is simple: Safer custody makes it easier for banks to hold coins and tokenized assets, and that is the slow road that brings more big money into crypto. Watch the early-2027 launch and the first named bank to sign on. Those two moments will tell us if this is a real shift or just a slick demo.
Read also: 88% of Big Firms Already Use Tokenized Cash, DBS Survey Finds
— BitByLine News Desk
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Sources: CoinDesk, crypto.news