Rebuild Money

Fixing the infrastructure of global finance

Financial infrastructure was built for a different era. Cross-border payments take days. 2 billion people are unbanked. Small businesses can't access capital. Crypto promised a revolution but mostly delivered speculation. We're looking for practical solutions that make money work better for everyone.

What we're looking for:

  • Payments infrastructure that actually works globally
  • Access to capital for underserved businesses
  • Financial tools for the unbanked and underbanked
  • Real utility from blockchain, not speculation

Problems in Rebuild Money

18 problems

Featured sourced problems

Democratize Financial Advice

·3w ago·@ycombinator

Wealthy families pay 1% of assets for financial advisors. Everyone else gets generic tips and conflicted recommendations. AI can deliver personalized, unbiased financial guidance at near-zero cost—budgeting, investing, tax planning, and more. Build the advisor for the 90%.

82
53
32

Save Us Money

·6w ago·@conviction

Price monitoring and deal negotiation is fragmented across platforms. Build web agents that aggregate demand, track savings, negotiate deals, and execute purchases on behalf of consumers.

44
21
23

Knock My SOX Off

·6w ago·@conviction

Sarbanes-Oxley compliance costs millions annually with manual reporting and testing. Build agents that automate internal control verification, user access auditing, and policy adherence checking.

42
20
22

Stablecoin Financial Services

·4d ago·@ycombinator

Stablecoins sit in the regulatory sweet spot between DeFi chaos and TradFi bureaucracy. Build the financial services layer—yield accounts, cross-border payments, tokenized assets—on this compliant crypto infrastructure.

19
11
11

AI-Native Hedge Funds

·2d ago·@ycombinator

The hedge funds of the future won't bolt AI onto existing strategies—they'll use AI agents to discover entirely new ones. Build the fund where AI analyzes filings, synthesizes research, and executes trades autonomously.

13
7
9

Build Ethereum Layer 2 Scaling Solutions

·55w ago·@ARK Invest

Ethereum L2 daily transactions surpassed mainnet for the first time in 2024. Rollups and sidechains reduced fees by 90%+. Build the scalability layer.

13
6
9

Build Stablecoin Payment Infrastructure

·55w ago·@ARK Invest

Stablecoin transaction value hit $15.6T in 2024, exceeding Visa ($13.1T) and Mastercard ($7.8T). Active wallets reached 23M. Build the payment rails of the future.

11
5
8

Create Financial Transparency Tools for B2B Transactions

·60w ago·@Pathlight Ventures

Build platforms that bring transparency and trust to B2B financial transactions—pricing, payments, credit.

12
5
7

Build Infrastructure for Institutional Bitcoin Adoption

·55w ago·@ARK Invest

Spot Bitcoin ETFs received $4B inflows on launch day (highest for any ETF ever). Bitcoin's realized market cap grew 86% in 2024. Build the rails for institutional crypto.

9
4
7

Community submissions

AI-Native Hedge Funds

·2d ago·@Y Combinator

The hedge funds of the future won't bolt AI onto existing strategies—they'll use AI agents to discover entirely new ones. Build the fund where AI analyzes filings, synthesizes research, and executes trades autonomously.

13
7
9

Stablecoin Financial Services

·4d ago·@Y Combinator

Stablecoins sit in the regulatory sweet spot between DeFi chaos and TradFi bureaucracy. Build the financial services layer—yield accounts, cross-border payments, tokenized assets—on this compliant crypto infrastructure.

19
11
11

Democratize Financial Advice

·3w ago·@Y Combinator

Wealthy families pay 1% of assets for financial advisors. Everyone else gets generic tips and conflicted recommendations. AI can deliver personalized, unbiased financial guidance at near-zero cost—budgeting, investing, tax planning, and more. Build the advisor for the 90%.

82
53
32

Knock My SOX Off

·6w ago·@Conviction

Sarbanes-Oxley compliance costs millions annually with manual reporting and testing. Build agents that automate internal control verification, user access auditing, and policy adherence checking.

42
20
22

Save Us Money

·6w ago·@Conviction

Price monitoring and deal negotiation is fragmented across platforms. Build web agents that aggregate demand, track savings, negotiate deals, and execute purchases on behalf of consumers.

44
21
23

Build Infrastructure for Institutional Bitcoin Adoption

·55w ago·@ARK Invest

Spot Bitcoin ETFs received $4B inflows on launch day (highest for any ETF ever). Bitcoin's realized market cap grew 86% in 2024. Build the rails for institutional crypto.

9
4
7

Build Stablecoin Payment Infrastructure

·55w ago·@ARK Invest

Stablecoin transaction value hit $15.6T in 2024, exceeding Visa ($13.1T) and Mastercard ($7.8T). Active wallets reached 23M. Build the payment rails of the future.

11
5
8

Build Ethereum Layer 2 Scaling Solutions

·55w ago·@ARK Invest

Ethereum L2 daily transactions surpassed mainnet for the first time in 2024. Rollups and sidechains reduced fees by 90%+. Build the scalability layer.

13
6
9

Create Financial Transparency Tools for B2B Transactions

·60w ago·@Pathlight Ventures

Build platforms that bring transparency and trust to B2B financial transactions—pricing, payments, credit.

12
5
7

Explore Other Categories

Moonshots

The problems that define the next century

Some problems are so large that solving them changes everything. Fusion energy. Brain-computer interfaces. Reversing aging. These aren't incremental improvements—they're civilizational shifts. We're looking for the technical breakthroughs and bold bets that seem impossible until they're inevitable.

Niche Markets

Small markets that desperately need a champion

The best businesses often start in markets that look too small. Vertical SaaS for dry cleaners. Tools for independent truckers. Software for yacht brokers. These niches are ignored by big companies but represent real pain for real people. Dominate a niche, then expand.

Future of Work

Reinventing how 4 billion people spend their days

Work is being rebuilt from scratch. Remote collaboration. AI-augmented productivity. The death of the 9-to-5. The rise of the portfolio career. The companies that define how we work in 2035 are being built now. We're looking for the tools, platforms, and systems that will shape the next era of human productivity.

Creator Economy

Powering the next generation of independent creators

50 million people now consider themselves creators. Most make less than $500/year. The infrastructure is broken—discovery is algorithmic roulette, monetization favors platforms over people, and burnout is the norm. We need better tools for creators to build sustainable businesses around their work.

Longevity

Adding decades to the human healthspan

The science of aging is accelerating. Senolytics. Gene therapy. Epigenetic reprogramming. For the first time, extending healthy human lifespan is a serious engineering challenge, not science fiction. The companies solving these problems won't just build billion-dollar businesses—they'll change what it means to be human.

Climate Tech

The decade that decides everything

We have 10 years to fundamentally transform energy, transportation, agriculture, and manufacturing. This isn't about incremental efficiency—it's about reinventing trillion-dollar industries. The climate transition will create more wealth than the internet. The problems are urgent, massive, and solvable.