Shyu, who served as a tech lead at Google and later as a staff software engineer at Meta before building a YouTube audience of more than a million subscribers, laid out his case in a recent video, zeroing in on the issues of quantum computing and the future of miner incentives, stating:

I sold all my Bitcoin, and I suffered absolutely massive financial losses

The first bomb, in Shyu’s words, is the slow erosion of the network’s security budget. “Miners secure the network, and they have to get paid in two ways: either newly minted coins or your transaction fees,” he explained. The block subsidy is cut in half roughly every four years and currently stands at 3.125 BTC, with the next halving expected in 2028.

The problem, he argues, is that new coins are running out and fees have not filled the gap. “95% of all Bitcoin is already minted. The fee economy they would depend on never showed up,” Shyu noted, while further warning:

As fees fade, miners switch off, security drops, the network weakens again… and a slow death spiral could set in. Bitcoin is over.

Miner stress is already visible in the data as hashprice, a daily measure of mining revenue per unit of computing power, hovers around $29 per petahash per second this month, and miners absorbed an 18% hashprice crash in late June as Bitcoin’s mining difficulty jumped 7.15%.

The second bomb is quantum computing because a sufficiently powerful quantum machine could, in theory, use Shor’s algorithm to derive private keys from exposed public keys, putting older bitcoin addresses at risk. Timelines vary widely, as venture investor Nic Carter has pointed to a possible “Q-Day” around 2035, while other research published this year has shifted some planning horizons toward 2030.

Not everyone is in on the panic, with several academics concluding recently that attacking Bitcoin’s mining process itself would require “the energy of a star,” and the industry has mounted a broad security race to quantum-proof the chain.

Proposals include BIP-361, a three-phase soft fork that would eventually freeze coins that skip migration to quantum-safe addresses, while Starkware’s chief product officer has published a scheme for quantum-safe transactions built from existing rules.

Popular analyst Willy Woo too has argued the threat is already being met, pointing to surging dev activity around the issue.

Shyu’s own exit was as much about leverage as protocol design. “I used excessive leverage. A small mistake led to dramatic consequences,” he admitted. Bitcoin fell from about $126,000 in October 2025 to the low $60,000s this summer, a drawdown of roughly 50% that triggered automatic liquidations of his leveraged position. He described the market as walking on “a thin layer of ice.”

Even after capitulating, the engineer insists he has not abandoned the asset class entirely, calling himself “still a long-term bullish investor.” Critics have noted that Shyu has a history of dramatic reversals, and his warning landed during a week when the market moved the other way.

Whether either bomb ever detonates depends on decisions still years out. The 2028 halving will cut the block subsidy to 1.5625 BTC, sharpening the fee debate, and developers have yet to coalesce around a single quantum-migration path.

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