The Wire PM — June 13, 2026
Coinbase's new quantum report flags millions of bitcoin in exchange cold wallets as exposed
The Wire PM — June 13, 2026
Coinbase quantum report flags exchange cold wallets. A new Coinbase research report warns that millions of bitcoin held in exchange cold wallets sit behind public keys that a future quantum computer could break. The danger is not today's hardware. It is the multi-year window needed to migrate wallets, addresses, and custody infrastructure to post-quantum signatures before such a machine arrives. NIST has already standardized quantum-resistant cryptography, but the report notes the new signatures are far larger than the ones bitcoin uses now, which raises real questions about block size and throughput during any transition. The message for custodians and exchanges is to start planning the migration now rather than wait for a working attack to force the issue.
Spot bitcoin ETFs snap a five-day outflow streak. US spot bitcoin ETFs pulled in $85.8 million on Friday, the first net inflow after five straight sessions of redemptions. The turn tracks a broader risk rebound this week as macro headlines cooled and bitcoin steadied near $64,000. One green day is not a trend, and the funds still shed billions across early June, but it breaks the selling pattern that had defined the month so far. Whether flows hold into next week is the number to watch.
Tennessee man indicted over alleged crypto Ponzi. Federal prosecutors indicted a Tennessee man accused of running a crypto investment scheme that took millions from investors on promises of outsized returns. The case is small next to the market-structure fights in Washington, but it is a reminder that retail-facing fraud enforcement keeps moving in parallel with the policy debate. For yield hunters the lesson is the usual one: returns that look too clean to be real usually are.
Numbers (Updated)
- BTC: $64,137 (+0.70%)
- SOL: $68.06 (+1.45%)
- ETH: $1,677.52 (+0.57%)
- SOL TVL: $4.76B
- Top USDC yield (Solana): Jupiter Lend 3.87% ($419M TVL)
Yields and on-chain figures are live snapshots, not financial advice. Every yield carries risk.
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