metadata: {"signature": "0x8bd00a8652dd7adbb010c610b48f94103145d0bf0147c535b158034203c4f7e45ba2b441d261a4ddf09368598cae7c584246b7ca996caf1bd832b3a443291b661b", "application": {"round": "0xda3b55a9bcf58bb2d9f673836beab3ae47ca9184", "answers": [{"type": "email", "hidden": true, "question": "Email Address", "questionId": 0, "encryptedAnswer": {"ciphertext": "rBhi5lz27XQiz85IFAtr9Jm4cjnsfjKH/dNhcXVhVaBqPvnLMgpcEs19eLdJZy+9", "encryptedSymmetricKey": "81b8373838b5e8b1ef41ec495427d86cbda4713b98232e9a6c24878033f95be15926993feced59388ada486f9bdcb10a1da137c863e82121e77e11b3a8c2f08264d9a60a64a23d1378e5dc6707a239649445de49ea1741d8a1ae58f9b70245a68006fd410f92596682bca19493ee4e87cdb79863c282d489701f05d4b02e20dc0000000000000020600b764a4b62f9fea9ad103cb3ee1d166282249c3d9fc1dda0f28a058528bc9abf1bc9d5862ae232f0a4565414b85195"}}, {"type": "short-answer", "hidden": true, "question": "Telegram Handle We Can Use To Contact You(you can answer N/A)", "questionId": 1, "encryptedAnswer": {"ciphertext": "77nLjAq90TGSkoNZ951rfjJsg+24PPXfxYpPBQWfwjQ=", "encryptedSymmetricKey": "9fb1756e604e0c0daa71d3293351e35fca22f2772ab0397fe633fd609c697dd59cd33099562e78077d29484eca250d0073404885ff29dcb7d303c729b089fc6b4f5d8586d9b7fdc39bb437665610dd362fc7ebc6138d32718e9e72d173ac9ca920b9ac589add3d3c9a9adc96d2eea9de48d5b8353f23b6823a505449a35cda0b0000000000000020ed28caa1da7b370e1bb61b67b413334258d3492a0fcae3a1e1664f26bfaa9bb39b1cd97fed44cfe4e8af15679f7e4781"}}, {"type": "link", "answer": "https://github.com/ScopeLift/umbra-protocol", "hidden": false, "question": "Project GitHub Repo (Not Team Page): ", "questionId": 2}, {"type": "number", "answer": "6", "hidden": false, "question": "Total Team Size", "questionId": 3}, {"type": "paragraph", "answer": "N/A", "hidden": false, "question": "List the Github Handles and Wallet Addresses of Each Team Member (e.g. owocki - 0x123, kbw  - 0x456):", "questionId": 4}, {"type": "paragraph", "answer": "https://twitter.com/BenDiFrancesco\nhttps://twitter.com/wildmolasses\nhttps://twitter.com/garyghayrat\nhttps://twitter.com/keatingDev\nhttps://twitter.com/johnferas", "hidden": true, "question": "Social profiles (Twitter, Farcaster, Lens, etc.) of other main team members publicly associated with the project (N/A for solo founders): ", "questionId": 5}, {"type": "link", "answer": "https://discord.com/invite/uw4y5J2p7C", "hidden": false, "question": "Link to your Public Group Chat (e.g. Discord or Telegram)", "questionId": 6}, {"type": "paragraph", "answer": "Since the last grants round, we've made tons of progress on our efforts to standardize stealth address interopability on the EVM. In particular, we are working on two ERCs to do this. We completed audits of those ERC contracts and deployed them to testnets. We built an open source SDK for interacting with the stealth address standard. And we've advanced both to the point of near-finalization, with the first being in \"Last Call\" status, and other being \"In-Review\".\n\nhttps://eips.ethereum.org/EIPS/eip-5564\nhttps://eips.ethereum.org/EIPS/eip-6538\n\nDuring this time, we also shipped various features and performance improvements to the Umbra app, including decentralized hosting and support for the Base network. We've also begun initial architecture work for Umbra v2.", "hidden": false, "question": "If you've participated in past grant rounds, please share any new updates or milestones from the prior months (N/A if you haven\u2019t participated previously). ", "questionId": 7}, {"type": "address", "hidden": true, "question": "If you participated in past grant rounds using a different project payout wallet address, please share it here:", "questionId": 8}, {"type": "paragraph", "answer": "This Dune Dashboard summarizes the key metrics of the protocol across all networks it is deployed, and in aggregate.\n\nhttps://dune.com/intake/umbra-protocol\n\nAs shown, the protocol has transferred hundreds of millions of asset value, sent by nearly 100K unique addresses to some 75K registrants.", "hidden": false, "question": "Where should we look to see the impact of your project? Please provide links to public websites and/or the latest values for key metrics you track privately. This might be used in future impact reports", "questionId": 9}, {"type": "paragraph", "answer": "600,000", "hidden": false, "question": "Total Prior Funding for the project in USD", "questionId": 10}, {"type": "checkbox", "answer": ["Grants"], "hidden": false, "question": "Which of the following funding sources do you have? Check all that apply", "questionId": 11}, {"type": "number", "answer": "48", "hidden": false, "question": "How old (in Months) is the project?  ", "questionId": 12}, {"type": "multiple-choice", "answer": "North America", "hidden": false, "question": "Location/Region where the project is based ", "questionId": 13}, {"type": "multiple-choice", "answer": "Yes", "hidden": true, "question": "Have you read and confirmed your grant abides by the Program General Eligibility Policy? ", "questionId": 14}, {"type": "short-answer", "answer": "No", "hidden": true, "question": "Are you applying for any other OSS rounds in GG20? (Reminder: you can only be accepted into one) ", "questionId": 15}, {"type": "paragraph", "answer": "A lack of privacy tools is, arguably, one of the biggest weak spots of the Ethereum ecosystem. Stealth Addresses provide a key tool in the privacy toolbox, and we have lead the way in advancing them in the ecosystem. Umbra is the most widely used stealth address implementation on the EVM, and (as far as we know) in all of crypto.", "hidden": false, "question": "How does your project significantly contribute to the Ethereum network\u2019s infrastructure, addressing foundational needs and innovative solutions to current challenges?", "questionId": 16}, {"type": "paragraph", "answer": "Umbra is a privacy tool, and our work to create a stealth address standard are expressly aimed enabling interopability amongst dapps, protocols, and wallets that use this technology.", "hidden": false, "question": "How does your project promise to elevate the Ethereum ecosystem, particularly in enhancing privacy, interoperability, and/or user experience?", "questionId": 17}, {"type": "paragraph", "hidden": false, "question": "Anything else you'd like to share about your project, previous work, or other project affiliations? Anything you'd like to add that may help in determining project eligibility?", "questionId": 18}, {"type": "multiple-choice", "answer": "No", "hidden": true, "question": "Would you like to opt-in to future messages from Gitcoin for updates, information, and/or interviews? ", "questionId": 19}, {"type": "multiple-choice", "answer": "No", "hidden": true, "question": "Would you like to opt-in to us sharing your information with select third-parties for investment opportunities? ", "questionId": 20}], "project": {"id": "0xd046794292aa91ab772ee8c2c37f86e822d43cd8e129d4faa49ba93349a1d3fb", "title": "Umbra", "logoImg": "bafkreiem7q3g3b7knibjbskir74rdptd3rg6llsf327pcrtfaec4xoq564", "metaPtr": {"pointer": "bafkreidx4twdhdl5ahkjyten2en4ynvltf3qxjoqdg4u4rtrzw3uybyvdq", "protocol": "undefined"}, "website": "https://app.umbra.cash", "bannerImg": "bafybeibkqio6ktgkqfvdwz3jbtcnhotwpvbxnhni4s5kouzr4jqxzl52kq", "createdAt": 1673549726599, "userGithub": "scopelift", "credentials": {"github": {"type": ["VerifiableCredential"], "proof": {"jws": "eyJhbGciOiJFZERTQSIsImNyaXQiOlsiYjY0Il0sImI2NCI6ZmFsc2V9..VqtaEATTYNApiGZZLtrwzYFa-Vv-dWuTnhdCeMnBiPEzpDvwtRgsIYpiV_Br3xlyGo7uMcyPO0w2c_JBHYVnCg", "type": "Ed25519Signature2018", "created": "2024-04-17T20:59:29.351Z", "proofPurpose": "assertionMethod", "verificationMethod": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC#z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC"}, "issuer": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC", "@context": ["https://www.w3.org/2018/credentials/v1"], "issuanceDate": "2024-04-17T20:59:29.350Z", "expirationDate": "2024-07-16T20:59:29.350Z", "credentialSubject": {"id": "did:pkh:eip155:1:0x8f5906963Ae276E1631EFA8Ff1a9CaE6499EC5E3", "hash": "v0.0.0:jAyRQrkWla8O5iFE5WPlhEHRXSJ8VnpoPk4FoJxnrLc=", "@context": [{"hash": "https://schema.org/Text", "provider": "https://schema.org/Text"}], "provider": "ClearTextGithubOrg#ScopeLift#1479802"}}, "twitter": {"type": ["VerifiableCredential"], "proof": {"jws": "eyJhbGciOiJFZERTQSIsImNyaXQiOlsiYjY0Il0sImI2NCI6ZmFsc2V9..UYcaEN_RWSq-pXDd7wDIWtEzjvlOhhsw2pbnFLIqUs4vrTlbC88b1fkMSpSXqELof73fepAsM1jQ9RsMJmnVAQ", "type": "Ed25519Signature2018", "created": "2024-04-17T21:00:23.845Z", "proofPurpose": "assertionMethod", "verificationMethod": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC#z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC"}, "issuer": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC", "@context": ["https://www.w3.org/2018/credentials/v1"], "issuanceDate": "2024-04-17T21:00:23.845Z", "expirationDate": "2024-07-16T21:00:23.845Z", "credentialSubject": {"id": "did:pkh:eip155:1:0x8f5906963Ae276E1631EFA8Ff1a9CaE6499EC5E3", "hash": "v0.0.0:e8iebnG/xkSGedA/gGGf5F1exORzhO0HZZ/4TZFEvD8=", "@context": [{"hash": "https://schema.org/Text", "provider": "https://schema.org/Text"}], "provider": "ClearTextTwitter#UmbraCash"}}}, "description": "Umbra is a protocol that lets you get paid privately on Ethereum and Layer 2 networks. \n\n## About Umbra\n\nAs a protocol, Umbra defines a simple set of standards, coupled with a singleton smart contract instance, to enable stealth addresses on Ethereum. With a stealth address, a payer can send Ether or ERC20 tokens to an address controlled by the receiver, but no one except the two parties know who that receiver is. \n\nOn chain, the transaction looks like a simple transfer to an otherwise unused address on the Ethereum network. Off chain, the sender has used a public key published by the receiver to generate the new address. By encrypting the data used to generate the address, and announcing it via the Umbra smart contract, the sender can let the receiver know they\u2019ve sent them a payment to a new stealth address. Only the receiver can generate the private key needed to withdraw the funds.\n\nBy leveraging meta-transactions, Umbra enables withdrawers to pay relayers for gas using the tokens they\u2019ve received. This avoids the need to fund stealth addresses with Ether before withdrawing.\n\n## Project Status\n\nThe Umbra MVP went live in June 2021. You can visit https://app.umbra.cash to send and receive stealth payments using Umbra.\n\nSince our launch, we've made many iterative improvements based on user feedback. These included better mobile responsiveness, a simpler key registry system, faster scanning when searching for received funds, and other UX enhancements. We've also launched Umbra on Polygon, Optimism, and Umbra, and made huge improvements to our relay system to make token withdrawals faster and cheaper.\n\nSince launch, Umbra has processed over 270,000 payments across all networks,  transacting assets valued at over $500 Million dollars in the process. Nearly 75,000 accounts have registered stealth keys to enable privacy preserving payments through Umbra. Despite this growth, Umbra remains a grant funded public good project made possible by the community.\n\n## What's Next\n\nWe are grateful to our many supporters who have enabled us to get this far. There's still lot's more work to do!\n\nWe believe there is so much more we can do to make Umbra an even more powerful privacy tool in the Ethereum ecosystem. In the year ahead, we're focused on continuing to improve Umbra through new network deployments, performance improvements, and host of small UX improvements and features.\n\nMore importantly, we've been leading a community effort to develop a [Stealth Address EIP](https://eips.ethereum.org/EIPS/eip-5564), so that Umbra can remain an open, public goods protocol. This EIP is nearly finalized, having recently entered \"last call\" status.\n\nWith the stealth address standardization effort nearing completion, we've begun early work on Umbra v2. It will be the flagship implementation built on top of this new standard, and it will include a host of new features and capabilities making it significantly more flexible and powerful than Umbra v1. We're excited to share details about our v2 architecture soon!\n\n**Umbra has never raised VC funding or launched a token.** We rely on grant funding to make this project possible. Thank you for your support of privacy technology in the Ethereum ecosystem.", "lastUpdated": 0, "projectGithub": "ScopeLift", "projectTwitter": "umbracash"}, "recipient": "0x57ea12a3a8e441f5fe7b1f3af1121097b7d3b6a8"}}