01How it works
Contribute USDG during the seven-day window. Receive BRIM that releases over the following month.
- Send USDG during the seven-day window.
Any amount, any day, from any address. No cap, and no minimum raise for the event to proceed. Top up on later days if you like; each deposit keeps the terms of its own day.
- Get BRIM at 2.5 USDG each.
250 USDG buys 100 base BRIM. Earlier days add up to 3% more. A Juice allowance, earned with Ripe governance points, or a whitelist allowance adds 10% or 5% on the USDG it covers.
- The USDG fills the vessel.
70% becomes the reserve that backs every BRIM, 20% seeds the BRIM/USDG pool and 10% funds the operations desk. Each BRIM starts with 1 USDG of backing. The reserve opens in USDG and is planned to migrate into a basket of tokenized stocks.
- Brim opens and your BRIM starts releasing.
Nothing unlocks during the window. From launch, your tokens release linearly over 24 to 30 days, depending on your contribution day. Claim as they unlock, or later; nothing expires.
- Hold, stake, trade or redeem.
Released BRIM can sit in your wallet, go into staking for revenue-backed rewards through the Waterfall, trade in the pool, or be redeemed through the Tap for a proportional slice of the reserve. The finite Well only tops up the remaining gap toward the staking reward target, within its draw limits.
- A wallet on Robinhood Chain. The First Fill happens there.
- USDG on Robinhood Chain. USDG (Global Dollar) is a U.S. dollar-backed stablecoin issued by Paxos. USDG only, not USDC.
- Juice, if you want the 10% bonus. Ripe governance points, earned on Ripe now; the First Fill freezes a snapshot of them. See current Ripe standings.
- Nothing to send yet. The date and the 500 whitelist addresses will be announced on @Brim_HQ.
02What you pay and what you get
2.5 USDG per BRIM, before bonuses. Earlier days and eligibility add BRIM, never a higher price.
The standard quote is 2.5 USDG per BRIM. Every contribution earns its day’s early bonus on top, allowances or not. A Juice or whitelist allowance adds a further bonus on the USDG it covers. Bonuses add without compounding; they lower what you effectively pay per BRIM, and the quote never changes.
Why 2.5 USDG for a BRIM backed by 1 USDG
So before bonuses, 100 USDG of book stands behind your contribution: 40% of what you paid, before redemption fees. The rest seeds the pool, funds operations and stocks the finite Well. The Well only tops up gaps left by Waterfall rewards toward the target, within its draw limits. Your own early and eligibility bonuses come out of that 75 too. Redeem all 103 BRIM at book 1 after the 2% Tap fee and you would get about 100.94 USDG back; section 05 has the example and the two ways out.
The 20% funds the USDG side of a full-range BRIM/USDG pool; it is not 20% of BRIM supply. Pool and Mill assets do not count as reserve backing. Expenses come from the Mill’s 10%, so a small raise means a small reserve, pool and desk budget.
Where the initial BRIM goes
Shares of initial BRIM supply in a maximum-bonus illustration: all contributions on day one, with full Juice and whitelist bonus use.
- Contributors
- 61.71%Base BRIM + all contribution bonuses
- The Well
- 21.86%Inventory for staking rewards
- Liquidity pool (LP)
- 11.43%BRIM paired with the pool’s USDG
- Weekly Ripe rewards
- 5%Twelve months of weekly Ripe rewards
Fewer contribution bonuses leave more BRIM in the Well. Its share is about 21.86%–26.43% across contribution timing and bonus use at the assumed reserve valuation.
After launch, new BRIM is minted through Dutch auctions. Under the current dials, each starts at 5× the then-current book value and falls toward 1.10× until it sells out; governance sets the actual terms. The First Fill is the one fixed-price fill and the only one with early bonuses. A later auction can clear at a lower multiple if bidders wait, and book itself moves once the reserve holds stocks, so the First Fill is a fixed price, not a promise of the lowest price.
03Extra BRIM
Two bonuses, each capped by an allowance. Contributions are not.
There is no cap on how much you contribute. What is capped is how much of it can earn each eligibility bonus: that amount is your allowance. USDG beyond it still buys BRIM at the standard quote, with the day’s early bonus.
Whitelist bonus5% extra BRIM
500addresses on the list, and no more
Only 500 addresses will be whitelisted. USDG within your allowance earns 5% more; the 500 share a pool of up to 20% of the total raise, by weight.
The list and its weights are fixed onchain and published before deposits open. Watch @Brim_HQ.
Juice bonus10% extra BRIM
0.1%of all Ripe points to qualify
Addresses holding at least 0.1% of all accumulated Ripe governance points (Juice) at the frozen First Fill snapshot earn 10% more on USDG within their allowance. Juice allowances together cover up to 40% of the total raise.
Points are earned on Ripe now; see current Ripe standings.
The same 250 USDG, three examples
All three are day-one contributions, released over about 24 days from launch, with the named allowance covering the full 250 USDG. Bonuses add without compounding; they lower what you pay per BRIM, and the quote stays 2.5 USDG. The same USDG cannot earn both bonuses; Juice applies first, then whitelist to the remainder.
Who can earn an extra bonus
Bonus capacity is a slice of the final accepted raise, split into three pools. The Juice snapshot is taken once and frozen at the First Fill; every address above the 0.1% minimum qualifies for both Juice pools. Everyone can contribute any amount; the pools only decide who earns extra BRIM on it.
Your Juice allowance is your share of the overall pool plus your share of the recent pool; both parts earn the same 10%, not 20%. Your whitelist allowance is your weight’s share of its pool, earning 5%. At least 40% of the raise receives no eligibility bonus, and more when allowances go unused. Because every pool is a share of the final total, allowances are estimates until the window closes, and a growing raise cannot shrink them. Worked examples and the fine print, or estimate your BRIM.
04When you get it
Nothing during the window. From launch, a linear release over 24 to 30 days.
The move into stocks runs on its own track.Governance-approved purchases may begin before opening; the reserve keeps migrating into the stock basket alongside the live protocol.
Durations are approximate calendar days, measured in blocks. The release (the Decanter) begins when launch completes, not when you contribute and not automatically when the window closes. Day-one contributions finish after about 24 days, day-seven after about 30; “24 days” means fully released by then, with portions available throughout, not locked until day 24. First Fill has no separate cliff: allocations accrue linearly from launch and can be claimed as they accrue, with nothing unlocked up front.
Claim tokens as they unlock, or later. Nothing is lost by waiting; once the release finishes, the full amount is available. Released tokens can go to your wallet or straight into staking (the Basin). Unreleased tokens cannot be redeemed, even with the Tap open.
Days are consecutive 24-hour periods from opening, not calendar dates. Each deposit keeps its own day’s bonus and duration; a small day-one deposit does not secure day-one terms for later top-ups.
Top-ups across different contribution days
All deposits from your address share its final Juice and whitelist allowances. Those final bonus tokens are divided proportionally by the USDG contributed on each day and follow the respective day’s release schedule. Each day keeps its own early bonus. An early deposit does not accelerate the whole address’s bonus.
Two-deposit example. You contribute 250 USDG on day one and 250 on day seven, with final Juice allowance of 250 USDG and no whitelist allowance. You receive 200 base BRIM, 10 Juice-bonus BRIM and 3 early-bonus BRIM. The 10 Juice-bonus tokens split equally: 108 BRIM over 24 days and 105 BRIM over 30 days, both from launch, for 213 BRIM in total.
The calculator illustrates one standalone contribution; it does not reconcile multiple deposit days or renew your allowances.
05After it opens
Every BRIM opens with 1 USDG of backing, on its way to a basket of tokenized stocks. Redeem it, trade it, or stake it.
Book value is reserve value divided by total BRIM supply. The 1-USDG starting book is a starting point, not a dollar peg: as the reserve moves into tokenized stocks, book value moves with their prices, up or down. Market price can differ from both book and the quote; liquidity funding neither fixes it nor guarantees the pool can absorb released tokens.
Two ways out
Redeem through the Tap. The Tap exchanges available BRIM for a proportional slice of whatever the reserve holds at the time, paid in kind, less the redemption fee. Early on that is mostly USDG; as the basket builds, it is an increasing share of tokenized stocks. This is not a refund, and not a claim on any particular future basket. The fee is 2% in the current contracts, paying 98% of book before token rounding; governance can change it, and it is separate from pool tolls.
Trade in the pool. The BRIM/USDG pool is funded at launch. Trading in Brim’s pool incurs tolls in both directions; the papers’ published launch configuration is 5% to sell and 3% to buy, subject to governance changes. Public liquidity provision is planned but not built. Only released, available BRIM can be sold or redeemed.
A day-one public contribution of 250 USDG receives 103 BRIM, including its early bonus. After the full 24-day release, assuming book remains 1 USDG per BRIM, a reserve still entirely in USDG and the 2% fee, those tokens redeem for 100.94 USDG (103 × 0.98), before token rounding. Actual redemption uses book and fees at the time.
Starting backing ratios and initial supply
| Contribution | Starting backing per USDG |
|---|---|
| Public | 40% |
| Full whitelist allowance | 42% |
| Full Juice allowance | 44% |
Bonuses also redeem. A 250-USDG day-one contribution fully within a Juice allowance receives 113 BRIM. Under the public redemption example’s same full-release, unchanged-book, all-USDG and 2%-fee assumptions, those tokens redeem for 110.74 USDG (113 × 0.98), before token rounding. This still does not return the original 250 USDG.
These are approximate book-value ratios, not refunds or immediately available proceeds. Early bonuses increase them. Redemption requires released, available tokens and uses book and fees at the time; dollar recoverability and day-one liquidity are not promised.
Initial supply includes unreleased tokens and every allocation. Allocated BRIM is not itself a reserve asset. Supply follows the measured value of actual USDG and any stock holdings at settlement. Balances, valuation and allocation fit still need reconciliation. The 70% funding budget is not a promise of constant market value after conversions or price movements.
What the reserve holds
The plan is a reserve made mostly of tokenized stocks. Turning a basket of tokenized stocks into BRIM is what Brim is for. The First Fill raises USDG, so the reserve opens mostly or entirely in USDG and migrates into stocks from there. Governance may approve some stock purchases before opening; the opening mix is unannounced, and buying stocks is not required to open. Launch follows completed settlement and opening checks.
Each stock enters the basket by governance approval, under rules set and published before use, with the custody policy for any pre-launch purchase defined before spending. The pace and method of the migration are not yet fixed. Once the reserve holds stocks, book value moves with their market prices, up or down; USDG carries its own issuer risk. Expect the mix to keep changing over the life of the protocol.
Staking and the Well
Staking earns revenue-backed BRIM rewards through the Waterfall; the Well covers only the remaining gap toward the reward target, within its draw limits. The Well is a finite inventory of BRIM set aside at launch, roughly 22–26% of initial supply. It is what remains after contributors’ BRIM, bonuses, liquidity and weekly rewards, so fewer bonuses claimed means a larger Well. Revenue-backed rewards are minted into the staking pool, not into the Well; no protocol path can mint the Well a refill. Well payouts move existing BRIM to stakers; they do not mint supply or change book value by themselves. What you receive depends on how much is staked, by whom, and for how long; your contribution does not reserve a fixed share. Stake your BRIM as it releases to take part.
A full-Well scenario: what staking could change, and its assumptions
Staking can lower your effective cost per BRIM held. The illustration below hands the entire initial Well to First Fill contributors in proportion to their stake, which is an endpoint, not a schedule.
A day-one public contribution of 250 USDG starts with 103 BRIM. If First Fill contributors stake proportionally and receive the entire initial Well, that contribution represents about 139.48 BRIM, or 1.79 USDG contributed per BRIM held.
The quote stays 2.5 USDG per BRIM. Initial public backing is 40% before bonuses and redemption fees. The 1.79 figure applies only to this complete-Well illustration.
Assumes full allowance use, all contributions on day one with matching 24-day releases, unchanged one-USDG book and idealized complete initial-Well distribution before dust. Excludes competing stake, weekly reward principal, other issuance or revenue, later Well additions, fees and exits. Actual participation and timing change your share; receiving the entire Well is not guaranteed.
Well allocation and the effective-cost table
With reserve value equal to 70% of contributions, the initial Well is about 21.86%–23.57% of supply at full Juice and whitelist use, depending on timing. Across all use and timing combinations, it is about 21.86%–26.43%. It is not a fixed percentage; actual reserve valuation also matters.
| Contribution | Initial BRIM | BRIM after Well | USDG per BRIM held |
|---|---|---|---|
| Public | 103 | 139.4792 | 1.7924 |
| Full whitelist | 108 | 146.2500 | 1.7094 |
| Full Juice | 113 | 153.0208 | 1.6338 |
The modeled contributor-cohort average is about 1.71× unchanged starting book; individual results differ by bonus eligibility. For scale, at 10 million USDG contributed, contributors start with 4,320,000 BRIM and the Well holds 1,530,000. Receiving it all would leave contributors with 5,850,000 BRIM. This is underlying BRIM held through staking shares, not an additional contribution bonus.
Weekly recipients, people who buy in the pool and participants in later fills can also stake. Their timing changes reward shares. Mixed contribution days also mean different release speeds and changing relative stake; this single-day illustration does not assume fixed shares for that mixed group. Complete distribution is an idealized endpoint; taper and minimum payouts may leave inventory. This illustration does not promise principal recovery or protection from future issuance or market losses.
06Weekly Ripe rewards
A separate program for Ripe scorers. No contribution needed.
5% of initial supply funds twelve months of weekly BRIM rewards for the top Ripe Juice scores, whether or not they contribute to the First Fill. Each week’s budget is split in two: half by overall Juice score and half by Juice earned in the previous 14 days, each shared pro rata among that week’s qualifiers. Qualify with at least 0.1% of all accumulated Ripe governance points, checked with a fresh snapshot every week; see current Ripe standings. Activate each qualifying week; rewards release over 30 days, into stake. You need no BRIM holding or stake to qualify.
| Comparison | Juice bonus on a contribution | Weekly Ripe rewards |
|---|---|---|
| Requires | A USDG contribution in the window | Nothing; no contribution, no stake |
| Snapshot | Frozen once, at the First Fill | Fresh every week, for twelve months |
| What you get | 10% extra BRIM on USDG within your allowance | A pro-rata share of that week’s budget, from 5% of supply |
| Release | With your contribution, 24–30 days from launch | 30 days from activation, into stake |
How weekly rewards work
Weekly rewards are separate from the contribution bonus: a fresh snapshot every week, and no contribution or existing stake required. Their releases remain 30 days from activation, claimable only into stake.
Each week’s budget is the remaining uncommitted balance divided by the remaining scheduled weeks, including that week. Half follows overall Juice score; half follows Juice earned in the 14 days before that week’s snapshot. Each half is shared pro rata among the addresses that qualify for it. An empty half stays uncommitted; it is not awarded to the other half.
- Each qualifying weekActivate
Activate within that week’s window.
- From activationRelease over 30 days
Your activation starts a funded linear release.
- As tokens releaseClaim into stake
Weekly tokens go only into staking. Ordinary exits remain available, with no new lock.
Miss activation and you lose that week’s opportunity. Activated releases remain yours, including after month twelve. Only unactivated inventory rolls forward and, after the final window, goes to the Well.
The reward calendar derives from launch; the exact offset and end convention remain to be announced. If a week’s scores are not published in time, that window is skipped, its inventory stays available and the program is not extended. That differs from missing activation in a published window.
Once activated, later claims are not subject to the activation deadline. After delivery into stake, ordinary exits apply: the Basin allows direct redemption from stake through the Tap without the unstaking cooldown, with the Tap fee and ordinary redemption conditions.
07Try the numbers
What could your contribution receive?
250 USDG buys 100 base BRIM at the 2.5-USDG quote. Pick an amount and a day to see your early bonus, release duration and effective cost, then add an allowance if you have one.
Estimate your BRIM
Example: 250 USDG, day one, public contribution
Start with an amount and a day, or pick a preset. Add a Juice or whitelist allowance only if you want to explore a bonus. This illustrates one contribution; it is not a live quote or an exact onchain payout.
The interactive calculator requires JavaScript. The worked examples below remain available.
When a bonus covers only part of your contribution
A partial-allowance example. 250 USDG on day one, with 100 USDG Juice allowance and 50 USDG whitelist allowance.
100 base + 4 Juice + 1 whitelist + 3 early = 108 BRIM. The public portion still earns its early bonus. The 113-BRIM result does not automatically apply to your whole contribution.
Bonus allowances: worked examples and the fine print
Top Ripe Juice Scores means addresses with at least 0.1% of all accumulated Ripe governance points at the frozen First Fill snapshot, not RIPE token balances. The Ripe leaderboard shows current standing, not the frozen list. The recent pool counts points earned in the 14 days ending at the snapshot. Each pool is normalized over all qualified addresses, including those that never contribute; zero points in a pool give no share, and an empty pool supplies no capacity. Unused capacity does not enlarge anyone else’s allowance.
The 500 whitelist addresses share their pool in proportion to their positive weights; the denominator includes all 500, including noncontributors. Larger weights mean larger eligible amounts, not higher rates. Addresses and weights will be fixed onchain and published with the contract before deposits, subject to governance upgrades. Recipients and weights are unannounced; no tiers or concentration limits have been adopted.
Hypothetical weights. With 10 million USDG accepted, total whitelist weight of 1,000 and your weight of 5, your allowance is 10,000 USDG. Enter 10000 as your assumed whitelist allowance in the calculator. These weights are illustrative, not announced tiers.
Using all three allowances. Suppose your allowances are 100 USDG overall, 100 recent and 100 whitelist. A 300-USDG day-one contribution uses 200 USDG of Juice allowance first, then 100 of whitelist allowance. All 300 USDG earns the 3% early bonus: 120 base + 8 Juice + 2 whitelist + 3.6 early = 133.6 BRIM.
With those same allowances, a 200-USDG contribution instead uses only Juice allowance: 80 base + 8 Juice + 2.4 early = 90.4 BRIM. The whitelist allowance remains unused; the same funds do not receive its 5% bonus too.
These limits govern bonuses, not admission. There is no cap on what an address contributes; USDG beyond its allowances is accepted with public treatment. Public treatment applies to at least 40% of contributions, and more when bonus capacity goes unused. Top-ups share your allowances and do not create new ones. During the window, allowances are estimates using the current accepted total; the closing total finalizes them, and a growing total cannot reduce an allowance.
| Contribution day | Extra BRIM from early participation | Linear release from launch |
|---|---|---|
| Day 1 | 3.0% | 24 days |
| Day 2 | 2.5% | 25 days |
| Day 3 | 2.0% | 26 days |
| Day 4 | 1.5% | 27 days |
| Day 5 | 1.0% | 28 days |
| Day 6 | 0.5% | 29 days |
| Day 7 | 0.0% | 30 days |
Every contribution gets its day’s rate; allowance bonuses add separately. Releases begin at launch, with nothing unlocked up front. Days are consecutive 24-hour periods from opening. See the day-one versus day-seven example.
Calculation reference
For a standalone contribution x in USDG, the calculator applies the Juice allowance first, then the whitelist allowance to the remainder. Each bonus uses the standard quote and is added, without compounding. Token amounts are rounded down at 18 decimals for each term; inputs use six-decimal USDG.
- Base BRIM
- x ÷ 2.5
- Juice bonus
- Juice portion ÷ 2.5 × 10%
- Whitelist bonus
- whitelist portion ÷ 2.5 × 5%
- Early bonus
- x ÷ 2.5 × that day’s rate
- Total BRIM
- base + Juice + whitelist + early
- Your Juice allowance
- 20% × final accepted USDG × your share of qualified overall points, plus 20% × final accepted USDG × your share of qualified recent points
- Your whitelist allowance
- 20% × final accepted USDG × your assigned weight ÷ total weight of all 500 whitelist addresses, including noncontributors
- Initial supply
- 2.5 × measured reserve value ÷ standard quote, with value and quote in the same unit
- Well
- initial supply − contributions and bonuses − liquidity BRIM − weekly reward inventory
- Weekly budget
- remaining uncommitted BRIM ÷ remaining scheduled weeks, including the current week
Each Juice and weighted whitelist allowance is rounded down once, in USDG units after applying the individual share. An empty points denominator gives zero capacity. Actual settlement aggregates all contributions from an address, computes early bonuses by contribution day, and splits final base and Juice/whitelist bonus tokens proportionally across deposit days for their respective release schedules. The window closes at 168 hours; each boundary starts the next day’s terms. This calculator does not reconcile a wallet’s history.
08Before you contribute
What is still to be announced, what you are trusting, and what to do now.
- Dates and cutoffs, and the official contribution addresses.
- The frozen Juice snapshot and the qualifying list.
- The 500 whitelist addresses and their weights.
- Custody, settlement and failure terms. How funds are handled if launch cannot complete has not been decided.
What you are trusting. Brim is upgradeable through its governance multisig, so participating means trusting that governance and the creators; the whitepaper’s honest limits apply here too. Contributions cannot be cancelled once submitted.
- Get USDG on Robinhood Chain. USDG only, not USDC.
- Earn Juice on Ripe if you want the 10% bonus; the snapshot freezes at the First Fill.
- Watch @Brim_HQ for the date and the whitelist.
Nothing to send yet. Official addresses will appear only on this page and on @Brim_HQ, and the team will never send you one by direct message.
This page describes the current terms of the First Fill, Brim’s genesis event; the whitepaper and the yellow paper explain the protocol behind them. Design updated .