Weekly Roundup 10/23/26 (Gold alchemy, rogue financial AI agents, GENIUS implements stablecoin yield) (EP.746)

Marathon Fusion announced on October 21 that it had converted mercury into stable gold, but the proposed process depends on a working fusion reactor, which does not yet exist. It would use deuterium-tritium fusion neutrons to transform mercury-198 into unstable mercury-197, which then decays into gold. The speakers discussed an estimate of five tons of gold, worth about $500 million, as additional yield per gigawatt of electrical capacity. If fusion capacity eventually reached the 300–400 gigawatts of fission capacity operating today, they estimated that production could add roughly 2,000 tons of gold annually. Newly produced gold could be radioactive for a time, so the estimate does not imply immediately usable supply.

One speaker argued that scalable fusion production could make gold nearly worthless over the next 50 years, likening the potential impact to lab-grown diamonds and saying atomic-scale manufacturing could weaken the scarcity of physical stores of value. That outcome depends on fusion becoming practical at scale, and the speakers also cited asteroid extraction as another possible threat to gold’s scarcity. They contrasted gold’s physical immutability, which they said carries tail risks, with Bitcoin’s potential to address quantum-related threats through a software upgrade.

Major U.S. banks were reportedly detecting third-party AI agents using customers’ credentials inside their accounts. One speaker said banks were misleadingly describing customer-directed agents as rogue activity; another acknowledged the risk to banks. The speakers said it may be difficult for a bank to distinguish an agent acting through a customer’s browser from the customer, although a cloud-hosted agent’s predictable IP address could make it easier to identify. Banks may have an incentive to restrict agents because they could move deposits to higher-yielding alternatives. If users can view and rebalance assets across providers or trade through one interface, including in tokenized securities and decentralized platforms, agents could reduce the effort required to switch and pressure intermediaries that depend on consumer inertia.

The OCC’s final rule implementing the GENIUS Act bars stablecoin issuers from paying yield directly, while leaving third-party rewards, such as rewards paid by an exchange, to case-by-case review. Banks say the rule violates the law’s spirit, but the hosts argued that the statute bars direct yield rather than indirect rewards and that the OCC cannot rewrite it. They said the rule leaves Coinbase able to offer third-party rewards and benefits consumers. The distinction therefore turns on who pays the reward, with the treatment of particular third-party arrangements still subject to review.

Don Wilson of DRW sent the CFTC a comment letter on how compute markets could work and who might participate. The CFTC is considering compute futures, with a decision reportedly delayed until after the election; the speakers characterized its approach as deliberate consideration of a new market. Cash-settled contracts could allow lenders in GPU markets to transfer risk, potentially changing how that market functions. Visa was also reportedly in late-stage talks to acquire Fireblocks for about $2.5 billion, though Fireblocks said the report was untrue at the time. The hosts described Fireblocks as a dominant MPC custodian with trillions in platform flow that could give Visa a stablecoin foothold, and recalled its last valuation as about $8 billion.

CrowdStrike and Cloudflare reportedly said attacks surged before a patch was released, with thousands occurring beforehand. The speakers noted that publishing a patch can expose enough about a vulnerability for attackers to reverse-engineer it. They also said Indian certificate authority Emudra had weak secret keys, including one that was simply the number four, and speculated that a distilled Mythos model may have helped reveal the vulnerability.