{"signature": "0x294bb9ea4c2ec9e13e72956a95fa9c4f0d0c44aed42d26e1906e06fbf1978128324558973e7cc4c007b0b292fae2315090a68ab1720efd03185403f4dbb8af101c", "application": {"round": "0x8de918f0163b2021839a8d84954dd7e8e151326d", "answers": [{"type": "email", "hidden": true, "question": "Email Address", "questionId": 0, "encryptedAnswer": {"ciphertext": "gR5EcEjbWvhnAi3ZRGF1KLBUz0GNWWR5QV9y/kIsQho/rfE+FI3PUsY/48XI3xmP", "encryptedSymmetricKey": "3013510f200c276aa6abd737f5c7e3e967124d5598d447653055f171a7c33b118a0380c5455f1857c8cb5ac91de39d0b0905bc117a65db095be5565964f98405a6bcbd5f306a9fcb271152e722127594ddc55d874047cfd68a76cb6702f7c4b3b8854d6f6ecbd4239571854a87caa3825dd440d00e15a737674bb0559579f1160000000000000020c6d1f290a0e6a634b39a0146f4d082f4f52c16c6e130ffa5c700ff6e571601c77c0640e274ae1e3aa25d94643b5e12a2"}}, {"type": "link", "answer": "https://github.com/ScopeLift/umbra-protocol", "hidden": false, "question": "Project GitHub Repo (Not team page)", "questionId": 1}, {"type": "short-answer", "hidden": true, "question": "Telegram Handle", "questionId": 2, "encryptedAnswer": {"ciphertext": "83P8PSDzxDFeI/eULmD4qAd1QDuBBnMboD1Xbh6LNeU=", "encryptedSymmetricKey": "acd6d19b89559d01642390d332ad5e7bb15880f9299ddc8eb8bc5e1667110d5e514b2951c5a1211e38622ac5fca03012b8bea00b48921b88ea611c7954eab3aa271ffb8df890941644fd3232ecba07bfb6ce91a26955d4a04ffe7d5eb2765983dc8d55fd4dd6e030a7e28a88a2d782a181dc5959ab1dcbd4af2d5298a23b64160000000000000020fba07727aebbbe4062a04358415d5f24635df99170d8846f1291b9d890be67b12cf63b15bde1fae6fb05f61c22a8a4b7"}}, {"type": "link", "answer": "https://discord.com/invite/uw4y5J2p7C", "hidden": false, "question": "Link to your Public Group Chat (Discord or Telegram)", "questionId": 3}, {"type": "number", "answer": "420000", "hidden": false, "question": "Total prior funding for the project in USD", "questionId": 4}, {"type": "paragraph", "answer": "Umbra is fully grant funded public good. We have never launched a token nor received venture capital. In addition to Gitcoin, we have received grants from the Ethereum Foundation, MolochDAO, Gnosis Grants, Optimism Collective, and others.", "hidden": false, "question": "Please expand on how much funding you\u2019ve received from each funding source and when (VC, grants, token sales, etc)", "questionId": 5}, {"type": "number", "answer": "6", "hidden": false, "question": "Total team size", "questionId": 6}, {"type": "number", "answer": "36", "hidden": false, "question": "How old (in Months) is the project?", "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": "https://twitter.com/ScopeLift", "hidden": false, "question": "Profiles or socials of other main team members publicly associated with the project: ", "questionId": 9}, {"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/GG18-Eligibility-cb4a5754c56043d4b3ed34eddbac261c?pvs=4", "questionId": 10}, {"type": "paragraph", "answer": "Umbra is built on Ethereum and the smart contracts, SDK, and frontend are all fully open source under a permissive license. We are working to create a stealth address standard EIP so that stealth addresses can remain a public good.", "hidden": false, "question": "Please explain how your project meets the round-specific eligibility criteria", "questionId": 11}, {"type": "paragraph", "answer": "Since our last grants round, we have deployed on Gnosis Chain, shipped support for many new tokens, shipped significant performance optimizations when scanning for payments, and advanced the stealth address EIPs to the next stage.", "hidden": false, "question": "If you've participated in past grant rounds, please share any new updates or milestones from the prior months", "questionId": 12}, {"type": "paragraph", "answer": "We assess the success of our project based on the adoption of stealth addresses as a privacy tool. We see more users registering stealth keys, more funds flowing through the contracts, and in general more interest from the ecosystem in stealth addresses. For example, Vitalik Buterin has published several blog posts about stealth addresses in recent months. We hope to continue advancing this tool forward.", "hidden": false, "question": "How do you measure the impact of your project? Please provide examples and/or standard metrics. This might be used in future impact reports", "questionId": 13}, {"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": 14}, {"type": "multiple-choice", "answer": "Yes", "hidden": true, "question": "Would you like to opt-in to future messages from Gitcoin for updates, information, and/or interviews?", "questionId": 15}, {"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": 16}, {"type": "multiple-choice", "answer": "North America", "hidden": false, "question": "Location/Region where the project is based", "questionId": 17}], "project": {"id": "1:0x03506eD3f57892C85DB20C36846e9c808aFe9ef4:165", "title": "Umbra", "logoImg": "bafkreiem7q3g3b7knibjbskir74rdptd3rg6llsf327pcrtfaec4xoq564", "metaPtr": {"pointer": "bafkreidbewmjcvnx2pefciq7y7pyahn7nrzhk2p7aoee73d3zf5zzcxe44", "protocol": "1"}, "website": "https://app.umbra.cash", "bannerImg": "bafybeibkqio6ktgkqfvdwz3jbtcnhotwpvbxnhni4s5kouzr4jqxzl52kq", "createdAt": 1673549726599, "userGithub": "scopelift", "credentials": {"github": {"type": ["VerifiableCredential"], "proof": {"jws": "eyJhbGciOiJFZERTQSIsImNyaXQiOlsiYjY0Il0sImI2NCI6ZmFsc2V9..rAiMpDMTASMrJ4l4EjjjVHFz396D7efTLmCweQ2i7pFfK8sZ8D_yFXnXPjRAwobZ85NfRbkKdtrAKI_szfNnAg", "type": "Ed25519Signature2018", "created": "2023-08-10T21:28:37.623Z", "proofPurpose": "assertionMethod", "verificationMethod": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC#z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC"}, "issuer": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC", "@context": ["https://www.w3.org/2018/credentials/v1"], "issuanceDate": "2023-08-10T21:28:37.623Z", "expirationDate": "2023-11-08T21:28:37.623Z", "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..dVGPtG-8zyKcVFCXjZ5d8PcY7MGjuzp5KabljrWrYmcb0QDbo02glEe3UhSqFSlEkdtHGvjVHwQEXCx4R3jeAw", "type": "Ed25519Signature2018", "created": "2023-08-10T21:28:26.240Z", "proofPurpose": "assertionMethod", "verificationMethod": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC#z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC"}, "issuer": "did:key:z6MkghvGHLobLEdj1bgRLhS4LPGJAvbMA1tn2zcRyqmYU5LC", "@context": ["https://www.w3.org/2018/credentials/v1"], "issuanceDate": "2023-08-10T21:28:26.240Z", "expirationDate": "2023-11-08T21:28:26.240Z", "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 195,000 payments across all networks,  transacting $160 Million in value in the process. Nearly 70,000 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. We're hoping to build Umbra v2 as the flagship implementation built on top of this new standard.\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"}}