Holdfill: hold through the lockup, fill before the deadline

Orders

Three orders, one program.Pick the one that fits your token.

SpaceX
Convert before the deadline
Swap SpaceX PreStocks into SPCXx at no worse than the gap you accept. A fallback floor covers the final weeks, and nothing converts after 12 Mar 2027.
Set a SpaceX order
Anthropic, OpenAI
Sell at your price
Name the least USDC you'll take per token. The order waits in your wallet and fills only at that price or better. Jupiter's Trigger V1 limit orders refuse these tokens.
Sell at a price
Anthropic, OpenAI
Arm for the IPO
Set your terms before the issuer names a successor token. When the event lands, the keeper activates your order and fills it at your limit.
Arm an order

How it works

One signature. Your terms. The program enforces them.

1

Approve

Pick a market, an amount, and your terms. One signature approves the order program for that amount only. Revoke anytime.

2

Wait

Your tokens stay in your wallet. A keeper checks the pool every 10 seconds and does nothing until the price meets your terms.

3

Fill

When the pool pays your minimum, the program swaps through Meteora and checks you received at least that much. Anything less reverts.

Evidence

SpaceX holders get less than their tokens convert into.By a different amount every day.

From the live SPACEX market

Live mainnet

under the SPCXx entitlement, pool quote right now: ...; under the SPCXx entitlement, pool quote right now; Reading the live pool...
trading days a 20% limit would have filled: 11 of 71; trading days a 20% limit would have filled; Daily closes since listing, first on 4 Aug
Jupiter Trigger V1 order for SPACEX: V1 test; Jupiter Trigger V1 order for SPACEX; See the live response on Evidence. V2 price orders have not been tested for this mint.

Explore the evidence →

Compared

What a holder can do today.

Where tokens wait
Holdfill demo
In your wallet until fill
Sell now
Sold immediately
Jupiter V2
In a Privy-managed vault
Meteora
In DLMM pool bins
Minimum output
Holdfill demo
Fixed floor enforced by the program
Sell now
Swap quote and slippage bound
Jupiter V2
V2 derives a floor; output can vary
Meteora
Bin price; net output for this mint unverified
SPACEX transfer fee
Holdfill demo
1% tested on cloned mainnet state
Sell now
Included in the live quote
Jupiter V2
V1 checked live on Evidence; V2 untested
Meteora
Exact pool limit-order handling unverified
Cancel or reclaim
Holdfill demo
Revoke approval and close order
Sell now
Already sold
Jupiter V2
Cancel, then withdraw from vault
Meteora
Cancel and withdraw remaining deposit
Issuer deadline
Holdfill demo
Fallback floor and hard cutoff
Sell now
Sells today
Jupiter V2
Order expiry; no issuer-specific fallback shown
Meteora
Issuer deadline handling unverified

Feature	holdfill	Sell on the pool now	Jupiter Trigger V2	Meteora DLMM limit order
Where tokens wait	In your wallet until fill	Sold immediately	In a Privy-managed vault	In DLMM pool bins
Minimum output	Fixed floor enforced by the program	Swap quote and slippage bound	V2 derives a floor; output can vary	Bin price; net output for this mint unverified
SPACEX transfer fee	1% tested on cloned mainnet state	Included in the live quote	V1 checked live on Evidence; V2 untested	Exact pool limit-order handling unverified
Cancel or reclaim	Revoke approval and close order	Already sold	Cancel, then withdraw from vault	Cancel and withdraw remaining deposit
Issuer deadline	Fallback floor and hard cutoff	Sells today	Order expiry; no issuer-specific fallback shown	Issuer deadline handling unverified

Holdfill executes on devnet replicas; its real-mint fee and minimum tests run on cloned mainnet state. The live Jupiter check covers Trigger V1 only. Jupiter V2 custody, output, and expiry come from its current docs. Meteora bin deposits and cancellation come from its SDK examples. An SPACEX limit order on the exact Meteora pool has not been executed here.

Proof

Checked on chain, twice.

Tested against cloned mainnet state.Proven again on devnet.

checks passed on cloned mainnet state: 7 of 7; checks passed on cloned mainnet state; real SPACEX mint, real Meteora pool, real 1% fee
order program deployed on devnet: A6Uh...aSGV; order program deployed on devnet; same binary as the fork run
devnet transactions on Explorer: 5; devnet transactions on Explorer; 2 of them rejected on purpose, to prove the limits hold

Verify the proof →

Built on

Built on Solana, with the tools PreStocks holders already use.

Set your terms once.Holdfill fills them or waits.

PreStocks provide economic exposure, not ownership rights, and secondary-market liquidity is not guaranteed. They are unavailable in the U.S. and to U.S. persons. Issuer terms.

Hold through the lockup.Fill before the deadline.