Second Mezzamine loan goes active.
A new Mezzamine mining-loan program raised and deployed 5.00 BTC to its borrower and moved into active repayment, while net Solver yield held near its trailing anchor at 9.02% BTC APY.
The week in numbers.
Each week's settlement volume and the yield it earned.
Solver performance.
Both settlement volume and trade count came in lower week over week (-27.4% and -29.7%), a normalization after the prior week's record rather than a shift in the protocol's cadence. Flow stayed concentrated on the Bitcoin-to-Ethereum leg — BTC → WBTC held the largest single share of settled volume — with Base carrying most of the balance and Arbitrum a thinner slice.
The week itself generated 10.39 bps of settlement yield, which annualizes to 5.56% BTC APY, easing modestly from the prior week. A single week annualizes off a small base, so the trailing four-week anchor of 9.02% BTC APY is the more reliable read — and the return sits squarely within its recent range.
Where volume settled, by chain and route.
| Route · chain | Vol. ₿ | Trades | Share | WoW |
|---|---|---|---|---|
| BTC → WBTCBitcoin → Ethereum | 16.0023 | 27 | 45.1% | −9.8% ▼ |
| BTC → cbBTCBitcoin → Base | 10.8159 | 45 | 30.5% | −11.4% ▼ |
| BTC → WBTCBitcoin → Arbitrum | 3.5384 | 9 | 9.9% | −39.6% ▼ |
| BTC → cbBTCBitcoin → Ethereum | 3.4331 | 8 | 9.6% | −39.3% ▼ |
| cbBTC → BTCBase → Bitcoin | 0.6677 | 16 | 1.8% | +0.3% ▲ |
| Week total | 35.4334 | 123 |
The record to date.
The Solver protocol has settled 160.31 ₿ across 622 trades in the 11 weeks since inception on April 1, 2026 — net-positive in 11 of them.
The latest month against every month before it.
| Month | Vol. ₿ | Trades | BTC APY | MoM |
|---|---|---|---|---|
| April 2026 | 10.09 | 94 | 17.6% | — |
| May 2026 | 66.02 | 230 | 11.7% | +554.6% ▲ |
| Since inception | 160.31 | 622 | 10.0% |
Credit programs.
Mezzamine Mining Loan I received a repayment of 0.0983 BTC on June 12. Mezzamine Mining Loan I distributed 0.0983 BTC on June 14.
Mezzamine Mining Loan II recorded a transfer of 0.50 BTC on June 12. Mezzamine Mining Loan II received a fundraise contribution of 5.00 BTC on June 12. Mezzamine Mining Loan II deployed 5.00 BTC on June 12.
Mezzamine Mining Loan II completed its fundraise and deployed the full 5.00 BTC to its borrower this week, moving the program from fundraising into its active, repaying phase. Mezzamine Mining Loan I continued to perform, recording a repayment and passing a distribution through to investors; it now stands at 15% repaid. Both programs are BTC-denominated — investors deposit and are repaid in native Bitcoin.
About.
About this report. The Bitcoin Solver provides settlement liquidity for cross-chain Bitcoin flow, earning a spread on each completed settlement. Every figure here is a realized, BTC-denominated result, net of fees — not a quoted or projected rate. Because a single week is a small sample, the trailing four-week and since-inception figures are the more reliable guide to expected performance. This edition was published retrospectively at the launch of the Weekly Report; all figures are computed as of the week shown.
About the Bitcoin Solver. The Solver is one of Maestro Institutional's curated BTC yield vaults — a permissioned, compliant strategy that earns by meeting cross-chain Bitcoin demand, taking deposits and paying distributions in native BTC. Qualified investors can review the terms and live performance on the vault page.
About Maestro. Maestro is building the financial rails for the Bitcoin economy: a vertically integrated stack across data, liquidity, and credit that puts idle Bitcoin to work financing real-world activity. Our mission is to accelerate the world's transition to a financial system backed by energy and anchored by Bitcoin. More on what we're building →
