Web3 grants, hackathons and bounties
109 open web3 funding programs, each checked against the organizer's official page. 3 close in the next 7 days and 81 take applications on a rolling basis.
Money from blockchain foundations and protocols: ecosystem grants, hackathons with prize pools, retroactive funding and bug bounties for smart contracts.
IEEE ClimateChain Global Hackathon 2026
Online IEEE hackathon for blockchain and AI tools on climate problems. $3,000 in cash prizes, submissions October 5 to 25, 2026.
Web3 for Social Good Hackathon 2026 at SMU Singapore
Web3 for Social Good Hackathon 2026 at SMU Singapore has a USD 20,000 prize pool. Submit an idea or a prototype on DoraHacks by 25 October 2026.
TUM Blockchain & AI Hackathon 2026 in Munich
In person hackathon in Munich on 30 and 31 October 2026 for blockchain and AI builders, with €10,000 in prizes. Apply on Devfolio by 29 October.
Tari October Build Contest 2026: Spooky Secrets
The Tari Council pays 1,000,000 XTM for the best new privacy project on Ootle. Entries close at 00:00 UTC on 1 November 2026.
Tari Ootle Security Bug Hunt
The Tari Council pays up to 1,000,000 XTM for security bugs in the pinned Ootle commit. The hunt ends at 00:00 UTC on 1 November 2026.
0G Apollo Accelerator Cohort 2
0G Apollo Cohort 2 offers up to $2 million for up to 10 AI startups building on 0G. Applications close 2 November 2026.
Revert v4lend competition on Cantina
Revert Finance offers a $50,000 USDC pool for bugs in v4lend, on Cantina. The competition ends 3 November 2026.
Rocket Pool Round 42 GMC bounties
Rocket Pool is taking Round 42 bounty proposals until 7 November 2026 at 23:59 UTC. Proposers set the reward they think the work is worth.
Rocket Pool Round 42 GMC grants
Rocket Pool is taking Round 42 grant applications until 7 November 2026 at 23:59 UTC. Applicants propose their own budget and scope.
Rocket Pool Round 42 GMC retrospective awards
Rocket Pool Round 42 pays retrospective awards for completed open source work. Apply by 7 November 2026 at 23:59 UTC.
Stellar Community Fund Build Award: round SCF #46
The Stellar Community Fund Build Award gives up to $150K in XLM to teams building on Stellar. Round SCF #46 closes on November 8, 2026.
Celo Agents on Open Rails hackathon 2026
Celo pays $5,000 in prizes for agents that move money on live payment rails. Submissions close 9 November 2026.
BCH BLAZE 2026 hackathon
BCH BLAZE 2026 is an online Bitcoin Cash hackathon with a prize pool of $8,000 or more. Register by 13 November 2026.
Alliance ALL19 Accelerator
Alliance offers $400k on a SAFE to crypto and fintech founders for its ALL19 cohort. Early admission closes September 23, 2026, regular admission November 18.
Dev3pack Global Hackathon 2026: Solana university hackathon
Free three day Solana hackathon for university students, online or at local build stations, 27 to 29 November 2026. Best App Overall wins $10,000+.
OpenSats General Grant: Q4 2026 application window
OpenSats General Grants fund open source Bitcoin and nostr work for 3 to 12 months, paid in bitcoin. The Q4 window is open in October and November 2026.
Decentraland Creator Success 2026: paid game development for indie creators
Up to $4,100 in staged funding for solo developers and small teams to build social games in Decentraland. Apply for V0 by 30 November 2026.
X Layer TapeOut Accelerate 2026 hackathon
X Layer TapeOut Accelerate is an online hackathon with a 100,000 USDT prize pool for apps built with TapeOut on X Layer. Submit by December 7, 2026.
Prezenti Season 3 grants for Celo builders
Prezenti Season 3 funds Celo projects through Frontier grants of up to $15,000 for AI and agent infrastructure and Anchor grants for products with traction. Applications close 29 December 2026.
Folks Finance bug bounty on Immunefi
Folks Finance pays up to $200,000 in USDC for critical smart contract bugs, through Immunefi. The program expires on 31 December 2026.
Stellar Development Foundation Academic Research Grants: December 31, 2026 deadline
Stellar Development Foundation grants up to $150,000 for academic blockchain research. Proposals for this round are due 31 December 2026.
Decentralize AI Hackathon by HackerNoon
A $51,750+ prize pool and $35,000 in compute credits for developers building open AI infrastructure. The second round of entries ends on February 27, 2027.
Aero bug bounty on Sherlock: up to 500,000 USD
Dromos Labs pays up to 500,000 USD on Sherlock for critical bugs in Aero, its multichain liquidity protocol. Live since 21 October 2026.
Arbitrum Dune Analyst Credits for public dashboards
The Arbitrum Foundation gives selected analysts 2,500 Dune credits a month to build and maintain public dashboards on the Arbitrum ecosystem.
Arbitrum Stablecoin Growth Program: 2M ARB pool for USDG protocols
The Arbitrum Foundation offers incentives and a 2M ARB pool to stablecoin protocols that move to USDG. First 10 teams at $10M USDG get 200K ARB each.
Ethereum Bug Bounty Program 2026: up to $1,000,000, Glamsterdam in scope
The Ethereum Foundation pays up to $1,000,000 for critical bugs in Ethereum specs, clients and compilers. Glamsterdam is now in scope. No end date.
Paxos Labs bug bounty on Immunefi: up to $500,000
Paxos Labs pays up to $500,000 in USDG for smart contract bugs in Transit and PAXGy. The bounty went live on Immunefi on 20 October 2026.
1inch Aqua bug bounty on Immunefi: up to $100,000
1inch pays up to $100,000 in USDC for bugs in Aqua, its new protocol for custom liquidity positions, and in the Swap VM contracts. The bounty runs on Immunefi.
Starknet Web and Smart Contracts bug bounty on HackenProof: up to $250,000
Starknet pays up to $250,000 for critical bugs in the StarkGate bridge contracts and website. The bounty runs on HackenProof with no end date.
Kamino bug bounty on Sherlock: up to 1,000,000 USDC
Kamino pays up to 1,000,000 USDC on Sherlock for bugs in its Solana lending, liquidity and vault programs. Live since 16 October 2026.
Brink grant program for Bitcoin protocol developers
Brink awards year long grants to established Bitcoin protocol developers anywhere in the world to work full time on open source Bitcoin projects. Applications are open all year.
ERC-4337 Account Abstraction bug bounty: up to $250,000
The Ethereum Foundation pays up to $250,000 for critical bugs in the ERC-4337 account abstraction contracts and protocol. The bounty runs on HackenProof.
Inverse Finance bug bounty on Sherlock
Inverse Finance pays up to 100,000 USD in DOLA on Sherlock for critical bugs in its FiRM lending and DOLA contracts. Live since 12 October 2026.
IOTA bug bounty on Sherlock
IOTA pays up to 25,000 USDC on Sherlock for critical bugs in its core network. Live since 14 October 2026.
Rujira bug bounty on Sherlock
Rujira pays up to 25,000 USDC on Sherlock for critical bugs in its THORChain app layer contracts. Live since 29 September 2026.
SP1 bug bounty on Immunefi
SP1 pays up to $100,000 in USDC for critical bugs in its zero knowledge virtual machine. Open on Immunefi.
XRPL AI & Fintech Hackathon NYC 2026
In person XRP Ledger hackathon in New York on 24 and 25 October 2026 for AI agent payments and onchain lending, with $40,000+ in prizes.
Chainlink bug bounty on Immunefi: up to $3,000,000
Chainlink Labs pays up to $3,000,000 on Immunefi for critical bugs in Chainlink smart contracts, and up to $100,000 for critical web app bugs. Rolling.
Compound Finance bug bounty on Immunefi
Compound Finance pays up to $1,000,000 for critical smart contract bugs, through Immunefi. Rewards are paid in COMP.
deBridge bug bounty on Immunefi
deBridge pays a flat $200,000 for critical smart contract bugs, through Immunefi. Open on a rolling basis.
Enzyme Onyx bug bounty on Immunefi
Enzyme Onyx pays up to $200,000 in USDC for critical smart contract bugs, through Immunefi. Open on a rolling basis.
Gnosis Chain bug bounty on Immunefi: up to $2,000,000
Gnosis pays up to $2,000,000 on Immunefi for critical bugs in the bridges between Ethereum and Gnosis Chain. Rolling, updated October 2026.
Stargate bug bounty on Immunefi: up to $10,000,000
Stargate pays up to $10,000,000 on Immunefi for critical bugs in its cross chain bridge contracts. Rolling, live since September 2024.
LayerZero bug bounty on Immunefi: up to $15,000,000
LayerZero pays up to $15,000,000 on Immunefi for critical bugs in its cross chain smart contracts. Live since May 2023, updated October 2026.
Midas bug bounty on Sherlock: up to 500,000 USDC
Midas pays up to 500,000 USDC on Sherlock for bugs in its Ethereum and Solana contracts and web app. Live since August 21, 2026, with no end date.
OnRe bug bounty on Immunefi: up to $100,000
OnRe pays up to $100,000 in USDC on Immunefi for critical bugs in its Solana program. Live since May 2026 with no end date.
Silo Finance bug bounty on Immunefi
Silo Finance pays up to $100,000 in USDC for critical smart contract bugs, through Immunefi. Open on a rolling basis.
Solana Scholars research internships for PhD students
Solana Scholars funds 3 month research internships for PhD students, working with Solana engineers on consensus, networking, cryptography and economics. Applications are open all year.
Twyne bug bounty on Immunefi
Twyne pays up to $50,000 in USDC for critical smart contract bugs, through Immunefi. Open on a rolling basis.
Maelstrom Bitcoin Grant Program
Maelstrom pays Bitcoin developers 12 month grants of $50,000 to $150,000 in BTC, USDC or USDT. Applications are open at any time.
Exactly bug bounty on Immunefi
Exactly pays up to $25,000 in USDC for critical smart contract bugs, through Immunefi. Open on a rolling basis.
HackMeridian 2026: Stellar hackathon in Lisbon
HackMeridian is a two day Stellar hackathon in Lisbon on 25 and 26 October 2026, with up to $30,000 in XLM in prizes.
Horizen bug bounty on Immunefi
Horizen pays up to $10,000 in USDC for bugs in its ZEN staking contracts and staking web app, through Immunefi. Open on a rolling basis.
Solana Mobile Security Grants
Solana Mobile pays grants in SKR for security research on the Solana Mobile ecosystem. Applications are open at any time through an online form.
XOXNO bug bounty on Immunefi
XOXNO pays up to $20,000 in USDC for critical bugs in its Stellar lending contracts, through Immunefi. Open on a rolling basis.
GMTrade bug bounty on Immunefi
GMTrade pays up to $100,000 in USDC for critical bugs in its Solana smart contracts, through Immunefi. Open on a rolling basis.
Intuition bug bounty on Immunefi
Intuition pays up to $100,000 in USDC for critical bugs in its knowledge graph smart contracts, through Immunefi. Open on a rolling basis.
Team1 Mini Grants for Avalanche builders
Team1 Mini Grants give up to $10,000 to developers and community builders working on Avalanche. Applications are open on a rolling basis.
Golem Network bug bounty on Sherlock: up to 10,000 USDC
Golem Network pays up to 10,000 USDC on Sherlock for bugs in three public repositories. The program has been live since 1 October 2026.
Proximity Prize: Ethereum Foundation research rewards for SNARK soundness proofs
The Ethereum Foundation Proximity Prize rewards solvers who raise machine checked security bounds for hash based SNARKs. Proofs are checked in Lean.
Beldex Grants Program
Beldex offers a $1 million grant pool for developers and teams building privacy tools on its network. There is no fixed deadline.
Starknet Propulsion Program
The Starknet Propulsion Program covers up to $1 million in user fees for apps on Starknet. Applications are reviewed each month.
TheDAO Security Fund ETHSecurity Initiatives Round Two 2026
TheDAO Security Fund pays for Ethereum security work, with initiatives of $20,000 to $600,000. Round Two opened September 15, 2026 and ends in January 2027.
DAWN USD.infra Vault bug bounty
DAWN pays up to $50,000 in USDC for bugs in the USD.infra vault on Immunefi. Live since 12 July 2026.
sBTC bug bounty on Immunefi
The sBTC bug bounty on Immunefi pays up to $250,000 for bugs in the bridge. Live since 2 July 2026.
Cronos Ult app bug bounty on HackenProof: up to $20,000
Cronos pays up to $20,000 in USDC or USDT through HackenProof for security bugs in the Ult trading app and its backend API.
1inch Smart Contracts bug bounty on Immunefi
1inch pays up to $500,000 in USDC on Immunefi for bugs in its swap and limit order smart contracts. Live since June 11, 2026, rolling.
Btrust Developer Grants for Bitcoin open source
Btrust pays Bitcoin open source developers in BTC to work full time, with six month starter grants and yearly long term grants. Applications are open all year.
OpenSats RED token reimbursement for Bitcoin red teams
OpenSats RED grants pay back LLM token and compute costs for people red teaming Bitcoin open source software. Always open, with fast review.
Puffer bug bounty on Sherlock: up to 100,000 USDC
Puffer pays up to 100,000 USDC for bugs in its Ethereum contracts. The Sherlock program has been live since 17 August 2026.
CoW Grants Program (CoW DAO)
CoW DAO funds developer tools and new apps on CoW Protocol from a 500,000 xDAI budget. Proposals go on the forum at any time until January 2027.
Tenbin Bug Bounty on Cantina
Tenbin pays up to $40,000 for critical bugs in its asset token contracts, from a $100,000 budget on Cantina. Live since 11 September 2026.
Alchemix bug bounty on Immunefi: up to $150,000
Alchemix pays up to $150,000 in USDC for a critical smart contract bug through Immunefi. The program has no closing date.
XRPL Glow grants
XRPL Glow pays retroactive grants for open source work already shipped on the XRP Ledger. Wave 1 is open.
Cap bug bounty on Sherlock: up to 1,000,000 USDC
Cap runs a bug bounty on Sherlock for its core Ethereum contracts. Critical bugs pay up to 1,000,000 USDC. The program is live with no end date.
Arc bug bounty on HackerOne: up to $200,000
Circle pays up to $200,000 for critical bugs in the Arc network through a public HackerOne program that launched on September 16, 2026.
Aave V4 bug bounty on Sherlock: up to 2,500,000 USD
Aave DAO pays up to 2,500,000 USD for critical bugs in Aave V4 through Sherlock. The programme is live and takes reports at any time.
Babylon bug bounty on Sherlock: up to 500,000 USDC
Babylon Labs pays up to 500,000 USDC for critical bugs in its Bitcoin staking protocol through Sherlock. The programme went live on September 21, 2026.
Exponential Science call for project proposals: up to $15,000
Exponential Science funds research projects with up to $15,000 for six to twelve months. Proposals are taken all year on the topics of blockchain, AI and cryptography.
NUVA bug bounty on Immunefi
NUVA pays up to $40,000 on Immunefi for smart contract and web bugs. The program went live on May 18, 2026 and was last updated on September 18, 2026.
Paradex bug bounty on Sherlock: up to 500,000 USDC
Paradex runs a bug bounty on Sherlock with a maximum reward of 500,000 USDC. The programme is live and takes reports at any time.
Tenor Labs bug bounty on Sherlock: up to 200,000 USDC
Tenor Labs runs a bug bounty on Sherlock with a maximum reward of 200,000 USDC. The programme went live on September 11, 2026 and takes reports at any time.
Arbitrum Founder House Singapore 2026
Arbitrum Founder House runs in Singapore from October 23 to 25, 2026 with up to $300K USDG in prizes and grants for teams with a working product.
ETHGlobal Mumbai 2026
ETHGlobal runs a three day in person hackathon in Mumbai from November 5 to 7, 2026, with $175,000 available in prizes. Builders apply to attend.
Extra Finance bug bounty on Immunefi
Extra Finance pays up to $100,000 for a critical smart contract bug on Immunefi. The program has no closing date and was last updated on 16 September 2026.
Filecoin Foundation Open Grants
Filecoin Foundation Open Grants pay up to $50,000 for open source work that advances Filecoin. Proposals are reviewed as they arrive, with no fixed close date.
ENS bug bounty on Immunefi: up to $250,000
ENS pays security researchers up to $250,000 for critical smart contract bugs. The bounty runs on Immunefi with no closing date.
Ethena bug bounty on Immunefi: up to $3,000,000
Ethena pays up to $3,000,000 for a critical smart contract bug. The bounty runs on Immunefi and has no closing date.
Hedera bug bounty on Immunefi
Hedera pays up to $30,000 on Immunefi for bugs in its public network and services. The program was last updated 31 August 2026.
Solana Mobile Builder Grants
Solana Mobile funds mobile apps, tooling, content and research built on the Solana Mobile Stack. Applications can be sent at any time.
The Graph bug bounty on Immunefi
The Graph Foundation pays up to $50,000 on Immunefi for bugs in its indexing protocol. The program was last updated 27 August 2026.
Immunefi bug bounty program
Immunefi pays up to $50,000 for security bugs in its own smart contracts and web apps. The program is live and was last updated on September 9, 2026.
Stacks bug bounty on Immunefi
Stacks pays up to $250,000 on Immunefi for critical bugs in its Bitcoin layer and smart contracts. The program was last updated September 8, 2026.
USDT0 bug bounty on Immunefi
USDT0 pays up to $6,000,000 on Immunefi for critical bugs that break USDT redemptions. The program was last updated September 1, 2026.
Zcash Community Grants
Zcash Community Grants funds independent teams building public goods for the Zcash ecosystem. Applications are open all year and are filed as GitHub issues.
Hotcoin Web and Mobile bug bounty on HackenProof
Hotcoin pays up to $1,000 through HackenProof for security bugs in its website and its Android and iOS apps.
StackingDAO bug bounty on Immunefi
StackingDAO pays up to $100,000 on Immunefi for critical bugs in its Stacks smart contracts. No KYC and applications are open all year.
Robinhood Chain bug bounty on Cantina
Robinhood pays up to $1,000,000 on Cantina for bugs in Robinhood Chain contracts, wallet spending, and related web surfaces. Live as of September 8, 2026.
Venus Bug Bounty Program with BNB Chain
Venus and BNB Chain pay up to $100,000 for bugs in Venus contracts on BNB Chain. Reports go only through bugbounty.bnbchain.org.
Starknet bug bounty on Immunefi
StarkNet pays up to $250,000 on Immunefi for critical bugs in its layer 2 network and smart contracts. The program is open with no deadline.
Starknet Seed Grants
The Starknet Foundation gives early stage teams up to $25,000 in STRK to build applications on Starknet. Applications are rolling, with answers in about a month.
Hinkal Bug Bounty on HackenProof
Hinkal pays $5,000 to $10,000 for critical bugs in its privacy smart contracts and zero knowledge circuits. The program on HackenProof is open and rolling.
SSV Network bug bounty on Immunefi
SSV Network pays up to $250,000 for critical smart contract bugs in its distributed validator network, through a rolling program on Immunefi.
Cosmos Bug Bounty Program on Immunefi
Cosmos Labs pays up to $50,000 for critical vulnerabilities in the Cosmos Stack through Immunefi. The program is open on a rolling basis.
Lombard Finance bug bounty on Immunefi
Lombard Finance pays up to $250,000 for critical smart contract bugs through its Immunefi bounty. Open year round, terms updated September 10, 2026.
Solana Mobile Bug Bounty Program
Solana Mobile pays up to $75,000 in SKR for critical vulnerabilities in Seed Vault, the SKR onchain programs and the Seeker Genesis Token backend. Reports are accepted on a rolling basis.
Circle Developer Grants
Rolling milestone based grants in USDC from Circle for teams building payments, FX, treasury, prediction market and lending products on Arc and Circle tools.
Zcash Coinholder Directed Retroactive Grants: Q4 2026 round
The Zcash Coinholder Directed Retroactive Grants program pays for completed work on Zcash. The Q4 2026 call for proposals runs from 30 October to 13 November 2026.
Arbitrum Open House Dubai: Online Buildathon
The Arbitrum Foundation runs an online buildathon with a $30,000 prize pool. Registration opens October 31, 2026 and submissions close December 6.