Boost: Health Rate & veYMT

Yamato offers two type of boosts.

The veYMT boost multiplier will be implemented in v1.5.

The health rate boost multiplier will be applied from v1 launch, with retroactive YMT allocation (one year of linear vesting) at v1.5 launch.

Each boost multiplier can be up to 2.5x, for a total boost of max 6.25x.

veYMT boost multiplier

Following formula is used to calcurate score then veYMT boost multiplier is assigned per table.

$$\rm{ score = \frac{USERveYMT}{TOTALveYMT} / \frac{USERCJPYminted}{TOTALCJPYminted} * 2.5 }$$

$$veYMTboostmultiplier = \left\{ \begin{array}{ll} 2.5 & (\mathrm{score} \gt 2.5) \\ \mathrm{score} & (1 \leq \mathrm{score} \leq 2.5) \\ 1 & (\mathrm{score} \lt 1) \\ \end{array} \right .$$

Boost multiplier: veYMT share & CJPY share

Health Rate boost multiplier

The boost is applied by keeping the Yamato Pledge health rate high.

The relationship between the health rate and the multiplier is shown in the table below.

Health Rate(%)	multiplier
Less than 130	0
130~	1
150~	1.5
200~	2
250~	2.5

Total boost multiplier

veYMT boost multiplier（1～2.5）* Health Rate boost multiplier（0～2.5） 　→　0 , 1～6.25

User Debt amount x Total boost multiplier → Distribution score → Accrued per block

User distribution score / Total distribution score → User reward share

User reward share × YMT reward per block → User reward

YMT reward per block = User Reward Distribution Ratio (by CJPY, CUSD, CEUR, etc.) * Annual Reward Distribution Speed / Number of Blocks per Year (2,628,000 blocks)

User Reward Calculation

veYMT boost score (1 to 2.5) × Collateral Ratio boost score (0 to 2.5) → Total boost score (0 or 1 to 6.25) Borrowing amount × Total boost score → Distribution score → Accumulated per block

Your distribution score / Total distribution score → Allocation rate

Allocation rate × YMT per block → User reward

YMT per block is calculated as: (User reward distribution ratio for each asset type — e.g., CJPY, CUSD, CEUR, etc.) × Annual distribution speed per block / Number of blocks per year (2,628,000 blocks)

Checkpoints and Update Triggers A checkpoint is the timing when the distribution score — calculated as: Borrowing amount × veYMT boost × Collateral Ratio boost — is updated and recorded. Checkpoints and distribution scores are updated when the following actions occur:

1. CJPY borrowing or repayment

2. Collateral deposit or withdrawal

3. Redemption or repayment ※ For redemption or repayment, only the Pledge being redeemed or repaid will have its distribution score and checkpoint updated. ※ The account that executes the redemption or repayment transaction will not have its score updated.

User Reward Distribution Methods by Period The first YMT allocation accumulates distribution scores on a weekly basis starting from May 26, 2025, and the total allocation for that 9-week period will be executed on July 25, 2025. Assuming all Pledges have the same score, up to a 10× difference in allocation may occur, so it is recommended to acquire a checkpoint as early as possible. From the second YMT allocation onward, distribution scores are checked every Thursday at 9:00 a.m. (JST), and the allocation for that week is finalized. Rewards can be claimed immediately. \

• 1st YMT allocation: July 25, 2025 (exceptionally on a Friday)

• 2nd YMT allocation: July 31, 2025 (Thursday, 9:00 a.m.)

• 3rd YMT allocation: August 7, 2025 (Thursday, 9:00 a.m.)

• Weekly allocations continue every Thursday at 9:00 a.m. thereafter