# Guide for Gitcoin Grants Round 15 By [ahjdwgg](https://paragraph.com/@ahjdwgg) · 2022-09-24 --- Introduction ------------ [Gitcoin](https://gitcoin.co/) is a community where public goods developers can earn funding in Web3 while creating open-source, decentralized applications. [Gitcoin Grants Round 15 (GR15)](https://gitcoin.co/blog/grants-round-15-kicks-off/) - the biggest public-goods funding event in Web3 is kicking off from **September 7** to **September 22**. You can donate to different projects on the Gitcoin website. Over $2.8 million in total matching funds have already been committed across the Main Round, four Cause Rounds & 13 Ecosystem Rounds. Getting Started --------------- ### 1 - Create an Account and Sign In If you have never donated and don't have a Github account, please visit [https://github.com](https://github.com/) to create one. Go to [https://gitcoin.co](https://gitcoin.co/) and sign in with your Github account. ### 2 - Maximize Your Trust Bonus Before we start donating, you should maximize your trust bonus. You can complete several verifications to increase your trust bonus up to 150%. > What is Trust Bonus? > > In Grants Rounds (GRs), your donation can match extra funds from the **Matching Pool**. The amount your donation matches will depend on your trust bonus. > > For example, if a $1 contribution can match an extra $200 from the pool, the project will receive $201 in total from your $1 contribution! You can do the verification on [Gitcoin Passport](https://passport.gitcoin.co/) and submit the results on your [Gitcoin Profile](https://gitcoin.co/profile/trust). ![Verification methods](https://storage.googleapis.com/papyrus_images/2fa774e100e08a50c436ad7562a03c07200d627c4aff3882be3c0902ba81520c.png) Verification methods Verification methods ### 3 - Start Contribute _Well done!_ Now you can start to contribute to your favorite projects. Explore them on Let's have an example. Once you find a grant you are interested in, you can click the **Add to Cart** button on the right side of the page to add the grant to your cart. ![](https://storage.googleapis.com/papyrus_images/3d5233b7ebf8cc7c4aed54bcf4f89aae67c4a218c4555adf5616cf4e8bb4ba45.png) And you can enter the checkout by the cart button at the right top corner of the website. You can choose your desired amount and currency to contribute in the **Amount/Currency** section. ![](https://storage.googleapis.com/papyrus_images/81386d7504d6a93a1a45756a18b8cfc7e698d9a63792096ed5df0264fb5c805f.png) **Your Total Contribution** is an estimation of how much the project will receive from your contribution. You only need to pay the **Matching Pool Contribution + Grant Contributions**. ![](https://storage.googleapis.com/papyrus_images/4c19effdeb284d44b6ed61bf8a582592057ae22fb80abf76863b512e8ee2e823.png) Therefore, you can choose the network to check out. We recommend **zkSync (1.0) or Polygon** for lower gas costs. And you should be successful in contributing! ![](https://storage.googleapis.com/papyrus_images/efe0b3c155cc064b7dc9d01942caf00a69705724830677867cf5943ddd6ead16.png) **_Congrats!_** FAQs ---- ### When will the GR15 end? GR15 will end on September 22. ### I got the transaction underpriced error. It’s usually because you submit your transaction with an underpriced gas price. Please try the suggested gas price, or you can manually put a higher gas price. [Learn more about this error](https://metamask.zendesk.com/hc/en-us/articles/4402538041869-Error-ethjs-query-while-formatting-outputs-from-RPC-transaction-underpriced-error-#:~:text=Error:%20%5Bethjs-query%5D%20while%20formatting%20outputs%20from%20RPC%20\(transaction%20underpriced%20error\)). ### How to find my transaction link? You can find them on historical transactions in your wallet. You can also find them on the corresponding block explorer. ([Etherscan](https://etherscan.io/), [Polygonscan](https://polygonscan.com/) or [zkScan](https://zkscan.io/)) ### Can I contribute to multiple projects at once? Yes, you can add multiple projects to your cart and checkout them at once. ### What payment methods I can use? Ethereum, Polygon, and zkSync (1.0) are currently supported as payment methods by Gitcoin. You can choose one suits you. ### Can I increase my donation? You can donate to the same project more than once if you would like to. ### Why does my contribution match $0? Your match will be higher when you have a higher trust bonus score. However, it’s usually because the project has reached the maximum matching if it shows $0. ### How to get a GR15 supporter role? We have a GR15 supporter Discord role for all donors that contributed to the SyncSwap grant. You can join our Discord and submit the link to your donation transaction in the #gr15 channel. ### Can I donate to SyncSwap? Yes, SyncSwap is attending the GR15 and donations are welcomed! About SyncSwap -------------- SyncSwap is a seamless decentralized exchange (DEX) on zkSync 2.0 by MatterLabs. SyncSwap brings easy-to-use and low-cost DeFi to everyone with complete Ethereum security powered by zero-knowledge technology. Join the Journey ---------------- SyncSwap is a community-driven project, and the community's voice means a lot. Join our vibrant and rapidly growing community today to explore the zkVerse and shape the future of SyncSwap together. Thanks ------ This guide is based on [Mainnet Guide Gitcoin Grants Round 14](https://medium.com/@CalendarDefi/mainnet-guide-gitcoin-grants-round-14-2673e7236cd9) from [DefiCalendar](https://medium.com/@CalendarDefi). --- *Originally published on [ahjdwgg](https://paragraph.com/@ahjdwgg/guide-for-gitcoin-grants-round-15)*