Hey Gitcoin community,
I’m Jon, founder of LefCoin (LEF) — a sentiment-indexed token on Base L2 where doing good literally pays. Ivan from the Gitcoin team suggested I bring this here to get community feedback, so here goes.
What LefCoin Does
LefCoin has a built-in mechanism called the LOVE Index — a composite score (0–1000) computed from 6 subindices tracking real-world sentiment data: global peace, charitable giving, social sentiment, environmental care, community wellness, and on-chain good spending.
The LOVE Index directly affects the token’s economics:
- Every LEF transfer has a 1% fee routed to a rewards pool
- That fee is amplified by the LOVE Index — higher index = bigger rewards for all holders
- When the world is doing well (or when people spend LEF on good causes), everyone benefits
The key innovation is the GoodSpend Registry — an on-chain curated list of verified charitable destinations (charities, public goods projects, sustainability orgs). When someone sends LEF to a registered destination:
1. The Good Spend subindex increases on-chain
2. This raises the overall LOVE Index
3. Which amplifies rewards for every LEF holder
Public goods funding becomes a positive-sum game at the protocol level.
Why Gitcoin?
Gitcoin and LefCoin are solving the same problem from different angles:
- Gitcoin uses quadratic funding to amplify community voice — small donations get matched, ensuring broad support matters more than whale dominance
- LefCoin uses a sentiment index to make charitable giving structurally valuable — every donation to a verified destination improves returns for the entire network
Together, these mechanisms can create an ecosystem where funding public goods isn’t just altruistic — it’s economically rational.
What We’ve Already Done
- Gitcoin is registered as a verified GoodSpend destination in our on-chain governance registry
- 100,000 LEF has been donated to Gitcoin’s wallet on Base (BaseScan TX: Base Transaction Hash: 0x45c821e04d... | BaseScan)
- 11 charities total are registered, each received 100,000 LEF — including UNICEF, Internet Archive, Tor Project, Rainforest Foundation, Freedom of the Press, and Giveth
- The oracle pipeline (18 data sources across 5 categories) is open-source on GitHub: GitHub - j99lef/lefcoin-oracle: LefCoin (LEF) — A sentiment-indexed cryptocurrency on Base L2. Oracle pipeline aggregates 18 open data sources into the on-chain LOVE Index.
- All contracts are verified on BaseScan and Sourcify
Potential Collaboration Areas
I’d love community feedback on any or all of these:
1. Gitcoin Grants Round — Apply for a future grants round. LefCoin’s public goods mechanism could be a compelling case for quadratic funding support, and it would demonstrate real community demand.
2. GoodSpend x Gitcoin Grants — Imagine if Gitcoin Grants recipients could register as GoodSpend destinations. Every LEF sent their way would simultaneously fund the project AND boost rewards for all LEF holders. Quadratic funding meets sentiment-indexed rewards.
3. Gitcoin Passport Integration — We’re building community governance (LoveGovernance contract) where token holders propose and vote on new GoodSpend destinations. Integrating Gitcoin Passport for sybil resistance would make this governance more robust and credible.
4. Co-marketing the “public goods are economically rational” narrative — This is a story both communities benefit from telling. Gitcoin pioneered the idea that funding public goods can be sustainable. LefCoin makes it protocol-native.
Technical Details
Token: LEF (ERC-20) on Base L2
Contract: 0x977c8452eEd662F9E6515Be1c5D328946520a005 (ERC-20 Token | Address: 0x977c8452...46520a005 | BaseScan)
DEX: Aerodrome Finance (Aerodrome Finance)
Supply: 1B fixed (no additional minting beyond reward amplification)
Oracle: 18 data sources, 6-hour update cycle, open-source
Governance: On-chain proposals, 3-day voting, 4% quorum
GoodSpend Categories: 9 (Charity, Sustainability, Education, Healthcare, Community, Disaster Relief, Animal Welfare, Arts & Culture, Other)
Website: https://lefcoin.com
The Ask
I’m not here to shill a token — I’m here because LefCoin is architecturally aligned with what Gitcoin is building. The question I want the community’s take on:
How can we best connect these two mechanisms to make public goods funding more sustainable?
Happy to answer any questions about the contracts, the oracle system, or the economics. Everything is on-chain and verifiable.
Cheers,
Jon