metadata: {"signature": "0xd725db51c08e96e0ea6fcb70586406517f5046aa4265175dbee518a8fee09e815f4a3d44b749f7e9cf039cdd8eda0e39ff74257ba90a3665e0fececc6d88e6cb1b", "application": {"round": "0x12bb5bbbfe596dbc489d209299b8302c3300fa40", "answers": [{"type": "email", "hidden": true, "question": "Email Address", "questionId": 0, "encryptedAnswer": {"ciphertext": "FeAdeF/K8va/CEVVhS2ok94S3ugv2+WbjBmDkKjapv5p05Iaea7q7xnVkpJrpg8E", "encryptedSymmetricKey": "5232f8f9cc126847ce634be97d55c1097f3ab6957105ff896e3d2c05cb85a38d10abfd218ecf068c8792016fecbb5d02a3fb89ae9b0a21987e44be1ac46a17ee1558f4c3383a7734397552ad88295b7ad3dec2b9b160537f719d40ce137230ab8b520f2faacf93abe565cc9c7393154c0b7138be3f364a95a775f155ce68cadb0000000000000020b494bd979499f62fd201d29441a99e1b316a6b53dfbf84e9b258bbe2f1c5662cf19ded5a13968930e14400a286db71ac"}}, {"type": "short-answer", "answer": "Umbra is a public goods project that has been funded by grants only. In addition to Gitcoin, we've received funding from the EF, MolochDAO, and others.", "hidden": false, "question": "Previous project funding sources (VC, grants, token sales, etc)", "questionId": 1}, {"type": "number", "answer": "400000", "hidden": false, "question": "Total prior funding for project in USD", "questionId": 2}, {"type": "number", "answer": "6", "hidden": false, "question": "Total team size", "questionId": 3}, {"type": "number", "answer": "36", "hidden": false, "question": "How old is the project? (Months)", "questionId": 4}, {"type": "address", "hidden": true, "question": "If you participated in past grant rounds using a different project payout wallet address, please share it here:", "questionId": 5, "encryptedAnswer": {"ciphertext": "J4K+DkRWpESh5Kzfu4nNjV93qMCvcL53QsDAIU64mRU=", "encryptedSymmetricKey": "c71f8e0b6dcbd2ca22eb70feec461f518cf81ff8da77487d99b7bd7b00e1f55e0d9e67b5b76dfd3b6b66fb689d65950d72e9f8fc1f31afdc4153b212e9020691d51c25daa6c21d618ba8cb0219b8213dbe18f3a0516dfb82ce55785e19b9d78222947a91ae70949d694a3f978c3ca8e94b92871fd281c1993b5c1433aaaa7d6f0000000000000020faacb1a951247462977d3bde3cc09b512f3dcb65ee8966c966d16a4cf63975944248c5bbd229fcc89ecd85d4864f68a9"}}, {"type": "paragraph", "answer": "Umbra is stewarded by [ScopeLift](https://twitter.com/ScopeLift), a development team building in the Ethereum Ecosystem.\n\n\n[Ben DiFrancesco](https://twitter.com/BenDiFrancesco)\n[Matt Solomon](https://twitter.com/msolomon44)\n[Ed Mazurek](https://twitter.com/wildmolasses)\n[John Feras](https://twitter.com/johnferas)\n[David Laprade](https://twitter.com/david_laprade)\n[Gary Ghayrat](https://twitter.com/garyghayrat)\n", "hidden": false, "question": "Profiles or socials of other main team members publicly associated with project", "questionId": 6}, {"type": "multiple-choice", "answer": "Yes", "hidden": true, "question": "Have you read and confirmed your grant abides by the Program General Eligibility Policy? https://gitcoin.notion.site/Gitcoin-Grants-Beta-Round-Eligibility-b7fca9fd3c26450b89ded11caaa6497f", "questionId": 7}, {"type": "paragraph", "answer": "Umbra's smart contracts, SDK, and frontend are fully open source and developed under a permissive license. We build in the open. The repository can be seen here: https://github.com/ScopeLift/umbra-protocol", "hidden": true, "question": "How does your project fit into the OSS round eligibility criteria? ", "questionId": 8}, {"type": "paragraph", "answer": "We are working with other researchers to finalize a an [EIP](https://eips.ethereum.org/EIPS/eip-6538) that will standardize Stealth Addresses in the Ethereum ecosystem.\n\n", "hidden": false, "question": "If you've participated in past grant rounds, please share any new updates or milestones from the prior months", "questionId": 9}, {"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 has not been covered?", "questionId": 10}, {"type": "multiple-choice", "hidden": true, "question": "Does 50% of your team reflect the diversity of the community your project serves with a particular emphasis on including women, Black, Indigenous, and People of Color (BIPoC), individuals with disabilities, and members of the LGBTQ+ community?", "questionId": 11, "encryptedAnswer": {"ciphertext": "1zMD1+K4AhL7fM+H0T4i/eAvk6L5htdNzkW1v3978k0=", "encryptedSymmetricKey": "e316f8b00fdefba280f6ef308891b20ad3e3a10eba3eb97c5b22bae9e1a0bd17226ddb11eee70d4b42978f9a1336600165a4d40860f2860095d9828c4a5df02089b72f316cf612d80e8e8f87f9f6ae30bef22181d806648f72e92803e53444ac1f0611d4c16548d2c9e52ca19e35bc2acddaf050fb98102911806247b6f9e0cf00000000000000203faaff9c94a91b8b51e50bbf163b29224c56299811b0f8dc9c7d25bcbb7f32696845327107e3a2a48a532ac163942582"}}], "project": {"id": "1:0x03506eD3f57892C85DB20C36846e9c808aFe9ef4:165", "title": "Umbra", "logoImg": "bafkreiem7q3g3b7knibjbskir74rdptd3rg6llsf327pcrtfaec4xoq564", "metaPtr": {"pointer": "bafkreicetbghxnacereve5gewnbd62zemzhcnbxeeuyq2uuokw5w4wj3vq", "protocol": "1"}, "website": "https://app.umbra.cash", "bannerImg": "bafybeibkqio6ktgkqfvdwz3jbtcnhotwpvbxnhni4s5kouzr4jqxzl52kq", "createdAt": 1673549726599, "userGithub": "apbendi", "credentials": {"github": {"type": ["VerifiableCredential"], "proof": {"jws": "eyJhbGciOiJFZERTQSIsImNyaXQiOlsiYjY0Il0sImI2NCI6ZmFsc2V9..dG7qbVJWhMuwRFVXAvj5mXdpwbR9JMsUnWkzLOECtCAqelo19wVDaWPnbWoaa6yOGJcsW1iY7EzYBugLoni5CA", "type": "Ed25519Signature2018", "created": "2023-04-14T20:28:35.198Z", "proofPurpose": "assertionMethod", "verificationMethod": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC#z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC"}, "issuer": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC", "@context": ["https://www.w3.org/2018/credentials/v1"], "issuanceDate": "2023-04-14T20:28:35.198Z", "expirationDate": "2023-07-13T20:28:35.198Z", "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..24YFL985hNzAsaUcPyQN23rFj-iLcrLCC51V8LYTdRLeC2YlEt6VqQAwzh9AprFSUwB91wvXiByI0VOEJPmmDQ", "type": "Ed25519Signature2018", "created": "2023-04-14T20:30:04.095Z", "proofPurpose": "assertionMethod", "verificationMethod": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC#z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC"}, "issuer": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC", "@context": ["https://www.w3.org/2018/credentials/v1"], "issuanceDate": "2023-04-14T20:30:04.095Z", "expirationDate": "2023-07-13T20:30:04.095Z", "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 nearly 130,000 payments across all networks,  transacting more than $93 Million in value in the process. More than 60,000 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 withdrawal integrations, new network deployments, performance improvements, and host of small UX improvements and features. We're also working with researchers to develop a [Stealth Address EIP](https://eips.ethereum.org/EIPS/eip-5564), so that Umbra can remain an open, public goods protocol.\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"}}