Price:

Google offers banks a split-key route to crypto custody

Nov 4, 2026Summary from 3 podcasts.
  • Google is pitching banks a way to split crypto signing authority across separate systems.
  • The design reduces single points of failure but still puts Google in the trust chain.

Google has previewed a crypto custody service for financial institutions, built around a simple idea: don’t keep a complete transaction-signing key in one place. Its multiparty computation system divides key material among separate hardware enclaves, and a transfer requires a set number of shares to approve it. A bank might require two of three shares, for example, while policy checks can screen proposed transactions. Google says it cannot access unencrypted shares. Commercial availability is targeted for early 2027.

The pitch addresses a persistent security problem. Figures cited by David Bennett on Bitcoin And attributed 43.8% of cryptocurrency stolen in 2024 to private-key compromise. Splitting signing authority can limit the damage if one device or credential is breached; it does not make the system immune to every threat.

Marty Bent and Matt Odell, on Rabbit Hole Recap, see Google competing with institutional custody providers such as Fireblocks. But they stress that Google’s system relies on a software coordination layer, unlike Bitcoin’s native multisignature options and FROST. More bank access could bring crypto to more institutions, they said, without giving customers the control of holding their own keys.

Bennett said he would not trust Google as a custodian and wondered whether the service could lead to Google offering direct crypto custody. Hosts on Presidio Bitcoin Jam saw Google’s brand and security capabilities as potential advantages, and linked the move to years of blockchain work inside Google Cloud. The trade-off remains: fewer single points of failure, but Google becomes part of the trust chain.

Source Intelligence

- Deep dive into what was said in the episodes

Vote HARDER! | Bitcoin News • Nov 3

  • David Bennett argued that ETFs, banks exploring Bitcoin custody, and Google's proposed multiparty custody service make this election cycle unlike earlier midterms; he flagged ETF flows, jobs data, and Iran-war risk as market drivers.
Also discussed on this episode: (12)

Elections (1)

  • David Bennett treated election-day voting as futile, arguing that elected officials rarely deliver change; he also said higher taxes and wealth redistribution would weaken incentives to start businesses.

BTC Markets (2)

  • CoinDesk reported Bitcoin was above its 200-day average before the 2026 US midterms, unlike in 2014 and 2022; DWF Labs expected near-term volatility but a higher price twelve months later.
  • David Bennett's market roundup put Bitcoin near $77,650, with a 1.02 zettahash-per-second hash rate and ordinary fees; oil, metals, agricultural contracts, and US indexes were mixed or mostly lower.

Europe (1)

  • France postponed debate and a vote on its 2027 budget, while lawmakers rejected two proposed crypto exit taxes; other proposals on self-custody reporting and stablecoin conversions remain contested or pending.

Macro (1)

  • Australia's central bank raised rates as AI-related investment and energy costs pushed up inflation; the bank delayed its forecast for inflation to return to its target range until 2027.

Protocol (2)

  • Floppy.md relayed an unconfirmed warning that Cashu mints using the Spark backend may be vulnerable to fund theft through a Nutshell flaw; David Bennett said Cashu had not confirmed or denied the claim.
  • Liquid restored one-to-one Bitcoin backing for LBTC two months after an exploit; Blockstream CEO Adam Back listed new cold-storage authorization keys, disabled validation caches, hardened consensus rules, and third-party audits as safeguards.

Safety (3)

  • David Bennett said retaining 600 BTC made the Liquid attackers look like extortionists, not white-hat hackers, and argued that any reward should have been negotiated before the Bitcoin was returned.
  • Elliptic said the laundering was automated but showed no evidence of AI decision-making; it estimated billions remained, mostly in ETH, while some funds may have reached Chinese laundering networks.
  • David Bennett noted separate security incidents: BTC Pay Server urged merchants to disable servers amid reported hot-wallet attacks, and Mercado Bitcoin halted withdrawals after a $40 million hack; links to the Binance theft were unclear.

Censorship (1)

  • Kim Yo Jong denied North Korea's involvement in the Binance theft and suggested the United States might benefit, but offered no evidence; the FBI, TRM Labs, Chainalysis, and ZachXBT linked the attack to North Korean hackers.

Custody (1)

  • Elliptic said the Binance attackers spread stolen funds across thousands of wallets and chains, while Tether and Circle froze billions in stablecoins; the attackers moved quickly to swap funds into assets issuers could not freeze.

Fifi Finished | Bitcoin News • Oct 29

  • David Bennett says Google’s MPC custody system splits signing keys across separate parties, with configurable signing thresholds and policy checks; Google says it cannot access unencrypted shares. Bennett rejects Google as a custodian and suspects the product could precede Google offering direct crypto custody.
  • Key theft remains a major wallet risk: reports cited compromised keys in major 2024 thefts and a 2025 gap between AI-linked and other scam proceeds. Google’s MPC targets stolen credentials, while the cited AI and quantum concerns do not establish that either can break Bitcoin signatures today.
Also discussed on this episode: (13)

Physics (1)

  • David Bennett dismisses Alice & Bob’s quantum-computing estimate as premature: the company says a machine with 30,000 physical qubits could break Bitcoin wallet cryptography in just over an hour, but that hardware remains out of reach.

Europe (1)

  • Christine Lagarde plans to leave the ECB before her term ends. David Bennett treats the early departure as a possible warning about financial markets, while acknowledging that the transcript offers no explanation for her decision.

Regulation (3)

  • France’s Senate advanced automatic exchange of crypto tax data with foreign authorities, building on DAC8 reporting rules. David Bennett objects to exporting French residents’ transaction data; a separate proposal to tax conversions into certain fiat-pegged stablecoins has not become law.
  • Utah filed criminal charges against Kalshi and two executives over alleged illegal gambling, while the CFTC claims federal authority over prediction markets. David Bennett backs Utah’s argument that relabeling bets as derivatives does not change their nature.
  • Walmart and four other companies objected to having shares offered on the planned OKX-ICE tokenized-stock venue. The SEC process gives companies 30 days to object in writing; David Bennett expects the pushback to spread beyond the 38 companies listed.

Fed (1)

  • The Fed held rates steady despite two officials favoring a hike. Inflation, Iran-war oil costs, and elevated Treasury yields weighed on markets; traders priced in another hike for December, while Bitcoin barely moved after the decision.

Psychology (2)

  • David Bennett argues that constant retirement warnings push investors into frequent portfolio switches, creating tax liabilities with each sale. He says investors once rebalanced annually but now move among Treasuries, AI stocks, and other assets as economic narratives shift.
  • David Bennett recounts a Wells Fargo teller arguing that taxes make homes and food possible. He uses the exchange as an example of how ordinary people may credit taxation for goods and services the teller did not specifically connect to government provision.

Markets (1)

  • The market snapshot showed energy and metals mostly lower, while sugar and lean hogs rose. US crude remained above $100 per barrel, silver fell more than 2%, and major US equity indexes were mostly down.

BTC Markets (2)

  • Bitcoin traded near $81,000 as network hashrate held above one zettahash per second. David Bennett noted low on-chain fees and described network security as rising.
  • Strategy shareholders approved daily dividend accrual for four preferred stocks, although payments remain scheduled for business days and rates remain unchanged. The company says more frequent accrual could improve liquidity; David Bennett calls the structure an unnecessary yield product.

History (1)

  • David Bennett accepts a listener’s correction that the 1948 King David Hotel bombing should be attributed to Zionist militants, not Israelis as a whole. He argues that a country, its citizens, and its government should be treated as separate categories.

Society (1)

  • David Bennett traces pink-and-blue baby clothing to department-store marketing rather than an old custom. He says children commonly wore white for practical washing, then retailers promoted gendered colors and later reversed which color was assigned to each sex.

Binance Hack Unpacked, Human-Like AI Voices, What’s Holding Back Bitcoin Payments • Oct 30

  • Google is building a self-custody crypto product, a move the hosts linked to years of blockchain work inside Google Cloud and possible demand from financial institutions. The product’s global page listed secp256k1 support, and the hosts saw Google’s brand and security capabilities as potential advantages.
Also discussed on this episode: (14)

Sports (1)

  • Memphis basketball’s early season has centered on Ty Jerome, who averaged over 30 points through his first three games, and rookie Cam Boozer, whose triple-double made him the second-youngest player to record one. The hosts also discussed Iowa State’s strong preseason rating and Memphis’s NIL funding strain.

Models (2)

  • Block’s Dessa speech model stood out for natural pauses, emotion, and human-like imperfections, while requiring little training and running on a MacBook. The hosts said its intelligence and strongest use cases remain unclear, especially compared with the frontier-level model behind ChatGPT Live.
  • Human-like AI voices could help therapists or virtual companions build trust, and Tolan’s cartoon alien companion illustrates that approach. One host warned that presenting AI as human could deepen emotional dependence and repeat the harms of attention-grabbing social feeds; another argued people may prefer more natural interfaces.

Privacy (1)

  • Local models and private orchestration could keep sensitive records on a user’s device while routing less-sensitive work to hosted frontier models. Maple AI can send sub-agent tasks to frontier models or receive private tasks from another orchestrator, and a local model can remove personal information before documents leave the device.

Open Source (1)

  • Local and open models already help with software development and cybersecurity, but hosted models retain an economic advantage through subsidized compute. The hosts argued that mesh inference could turn idle personal hardware into a revenue source; they cited Signal’s growth as an example of funding a privacy-focused alternative with proceeds from a major platform sale.

Custody (1)

  • A roughly $6 billion Binance theft exposed security risks across exchanges and hardware-wallet supply chains. The hosts discussed suspected North Korean involvement, reports of compromised Ledger and Trezor devices through a reseller, and Keystone destroying tampered units; they emphasized that Binance’s cold-storage funds were reportedly untouched.

Stablecoins (1)

  • The attackers reportedly deposited stolen stablecoins into an Aave contract, borrowed ether against them, then moved the ether beyond the stablecoins’ freeze controls. The hosts said EIP-7702 amplified losses, and argued the incident shows that DeFi labels do not guarantee self-custody or censorship resistance.

BTC Markets (1)

  • Binance’s balance sheet appeared capable of absorbing the theft if its reported reserves were accurate, and the hosts saw little evidence that the hack drove Bitcoin’s decline. They warned that exchange and wallet risk remains distinct from Bitcoin’s core protocol, and estimated AI-driven cyber risk could take one or two years to settle.

Payments (2)

  • Bitcoin payments remain scarce despite major improvements in developer and user experience over the past seven years. The hosts said stablecoins already satisfy many payment needs, while Bitcoin’s volatility, dollar-based pricing habits, and capital-gains tax on ordinary purchases create friction that technical upgrades alone will not remove.
  • Square’s Bitcoin option still fails too often at merchants, and the hosts said few businesses advertise a meaningful discount to attract Bitcoin buyers. One host argued Cash App should promote its 5% Bitcoin cashback offer; another questioned whether tap-to-pay convenience and merchant preferences make that incentive enough to change habits.

Lightning (1)

  • Bitcoin payment adoption has a small but growing niche in internet gambling, where some operators cannot use card processors and Lightning offers instant settlement without chargebacks. The hosts said this activity has increased recently, but remains small beside stablecoin use and does not yet answer why gray-market industries broadly avoid crypto.

Agents (1)

  • AI agents could create demand for Bitcoin-native services if they need to pay without human accounts. The hosts pointed to Lexi, a Lightning wallet running in a trusted execution environment, and argued that Bitcoin-only naming could offer a clearer reason to pay than trying to retrofit ordinary consumer purchases.

Protocol (1)

  • A self-sovereign Bitcoin naming system could serve agents and people who want to avoid registrar accounts, but its scale remains unresolved. One host estimated millions of names could be issued each year using under 5% of block space, while verification and storage for eight billion names remain unsolved.

Media (1)

  • Reddit’s reliance on selling user data to AI labs could weaken its direct-visit model as language models absorb more online content. The hosts connected that shift to the dead-internet concern: people may increasingly access information through a few AI interfaces instead of visiting individual sites.

Google Wants to Custody Banks' Bitcoin. Brazil Shows Why You Hold Your Own | Rabbit Hole Recap 426 • Oct 29

  • Google previewed an MPC custody service for financial institutions, with key shares held in separate hardware enclaves; the hosts see it as Fireblocks competition but stress that Google’s coordination layer differs from native Bitcoin multisig and FROST.
Also discussed on this episode: (23)

BTC Markets (5)

  • The host argues Bitcoin benefits when central banks devalue fiat currencies, while the current market remains range-bound around $79,000 to $81,500.
  • The host reported Bitcoin at $81,370, a $1.64 trillion market cap, and 1,293 transactions in Clark’s mempool; mempool.space showed 57,846 unconfirmed transactions.
  • Jason Calacanis predicts Bitcoin will never set another all-time high and says investors should favor AI; the host counters that Bitcoin is money and can coexist with AI investments.
  • The hosts cite sharp declines in Brazilian assets after Lula’s victory and argue that Bitcoin self-custody can protect savings from currency and political risk; they also warn Brazil’s PIX and planned Drex enable more state oversight.
  • The host says Bitcoin-backed loan rates are falling as lending capital grows, and argues that rates below home-equity credit would make Bitcoin more attractive collateral because lenders can liquidate it continuously.

Inflation (1)

  • The host says Trump’s stated willingness to tolerate high inflation strengthens Bitcoin’s monetary case, while AI-driven productivity does not remove the need to store wealth in hard money.

Startups (1)

  • The hosts disagree on Anthropic’s prospects: one expects AI firms to face a shakeout, while the other says its S-1 looked stronger than feared and argues missing Q3 figures reflect filing deadlines.

AI Infrastructure (1)

  • Paul Kedrosky’s bear case is that projected AI infrastructure spending needs enormous revenue to earn an adequate return; he also argues frontier labs must assess how many customers need frontier-level models.

Safety (3)

  • The hosts flag Anthropic’s concentrated control as a governance concern: its team retains majority ownership, while a five-person trust appoints the board despite the company’s stated risk of catastrophic harm.
  • The host says scammers recruit teenagers through Roblox and Discord to call victims and steal Bitcoin, sometimes with Russian involvement; the host urges people not to answer unknown callers.
  • Coinbase tested five leading models with 16 agents against Bitcoin Core code and found two minor issues; the hosts say AI-assisted review supports faster patching, while warning developers not to surrender independent judgment.

Elections (2)

  • Brazil’s election drew allegations of irregularities: the host says voting hours were extended in Lula-favorable districts and Flavio Bolsonaro faced pressure to remain in Brazil, while acknowledging the reports were unconfirmed.
  • The host treats Senator Alex Padilla’s call to investigate Elon Musk without citing a specific crime as a warning sign of political targeting, and says socialist proposals in New York will face budget and implementation limits.

Models (1)

  • Lula promised sovereign Brazilian AI powered by domestic renewable energy; the host questions whether Brazil can create the economic conditions to deliver it and warns that state-controlled AI could shape permitted information.

Israel (1)

  • Israel’s election produced no clear governing majority, leaving coalition negotiations ahead; the host notes a record showing for Arab parties and says both likely governing blocs oppose a two-state solution and take a hard line on Iran.

Protocol (2)

  • Bitcoin Core disclosed two denial-of-service vulnerabilities involving unbounded memory growth; both were patched, and the hosts urged node operators to update while describing the flaws as medium severity.
  • Layer 2 Labs delayed its eCash fork-related release after Bitcoin Core’s vulnerability fixes and told node and pool operators to update before the fork point; the hosts support testing drivechains but dispute their proposed economics and trust assumptions.

Privacy (1)

  • The hosts discussed PISA, a regtest prototype combining PayJoin with cross-input signature aggregation to make transaction ownership harder to infer; PayJoin, Lightning, and ecash already offer privacy tools, while PISA would require a soft fork for mainnet.

Coding (1)

  • A GitHub deletion removed private forks of a startup’s repository after Anthropic acquired the original owner; the startup recovered its code from an employee’s laptop, exposing the risk of relying on a hosted repository alone.

Markets (1)

  • The hosts connect institutional custody and tokenization efforts to always-on markets: ICE invested in Trade.xyz, a Hyperliquid-based derivatives venue, while Stan Druckenmiller’s first tweet promoted Hyperliquid.

Regulation (1)

  • The host says Fairshake remains active in election spending and Senator Bill Hagerty continues to push market-structure legislation; the host also notes a Thai court ruling that Bitcoin can be owned, transferred, and stolen as property.

Social Media (1)

  • The hosts warn that algorithm-driven posts about grid shutdowns and election emergencies can amplify panic; one host recalls New York blackouts becoming dangerous after the first day, while acknowledging the city has handled outages before.

Media (1)

  • The hosts briefly discussed Kanye West’s apology op-ed and uncertainty about which venues will book his tour; they also recalled seeing Daft Punk and speculated that the group could reunite for a lucrative tour.