Changelog
Every transaction behind these lines is in the deployment log .
Liquid veBTC, Nov 12, 2026
A second product, open to anyone: Liquid veBTC. BTC or a veBTC lock comes in as fveBTC, a token that earns Mezo’s gauge fees and redeems within four weeks. MEZO or a veMEZO lock comes in as fveMEZO, one permanent lock that boosts every Feasy veBTC lock and takes a share of what they earn.
| What happened | Transactions |
|---|---|
Deployed, fveBTC 0x8576C2ea77dbae1D6897d4D5834B1ae247e9032F and fveMEZO 0xaE45e8B6f79Ed678dC3986EbA0871eF85cc8D385 | 0xfcd0…8b78 |
| A veBTC lock someone held merged in for fveBTC | 0x5f7e…451c |
| A veMEZO lock someone held merged in for fveMEZO | 0x0699…1903 |
| fveMEZO’s veMEZO boosted the ladder | 0x37b3…e961 |
In the app, a Lock page at feasy.org/lock locks BTC or MEZO, brings in the locks a wallet already holds, redeems, and shows the ladder week by week with each lock’s boost and what pays the exit line.
v8, Nov 10, 2026
The live vault, 0x5e78…9Ed2 on Mezo testnet. It has borrowed since Nov 11.
New
| Change | What it does |
|---|---|
| Spread guard | No new debt while sMUSD pays less than the loan costs, measured from sMUSD’s yield index |
| Recovery Mode unwind | Repays to Mezo’s minimum loan during Recovery Mode, then closes the loan once Mezo allows |
| Performance fee | 10% of profit above the previous high, capped at 20%. A rise waits 30 days |
| Savings sleeve | Holds the sMUSD and stakes a share of it in Mezo’s sMUSD gauge for MEZO |
| Booster | A permanent veMEZO lock that boosts the vault’s veBTC through Mezo’s BoostVoter |
| veBTC sleeve | Checkpoints veBTC before it collects, so a lock’s rebate is never missed |
Proven on Mezo’s testnet contracts
| What happened | Transactions |
|---|---|
| The spread guard refused a loan while sMUSD had under a day of history | 0xb196…d592 |
| The first v8 loan opened, 2,179 MUSD, once the spread was measured | 0x1697…0b9a |
| Four ended veBTC locks of Feasy’s test vaults paid out their fees and rebates and were withdrawn | 0xf85c…e047, 0x59da…c58e |
| The guardian unwound v7’s live loan, and its holders moved to v8 | 0xf504…938b |
| The first roll locked two veBTC rungs, and 100 MEZO became veMEZO boosting both | 0x93ad…7faa, 0xcfcf…bae6 |
| The keeper moved to the GitHub Action | 0xafd2…1d17 |
| Ownership moved to the 24-hour timelock | 0xab63…ae4a |
In the app
- The pool page shows the Mezo loop: whether the vault is borrowing, the loan and savings rates, the stake in the gauge, the MEZO earned, the veMEZO and each lock’s boost.
- A depositors tile, and MEZO income in the pool’s activity.
- An empty wallet gets a step to Mezo’s testnet faucet.
- The pitch deck at feasy.org/pitch .
Earlier versions
| Version | What it added |
|---|---|
| v7 | The veBTC sleeve, a four-week ladder of locks voting for the sMUSD gauge |
| v6 | The 7-day profit unlock, the guardian and the withdrawal queue |
| v5 | Fixes for three cases where Mezo refuses an operation, found on staging |
Contracts lists the retired vaults and where their holders went.