Pactum
The OTC desk for pump.fun bags

Move the bag.
Not the chart.

Sell a big bag straight to a buyer, away from the chart. One Solana transaction that both of you sign: the tokens go one way, the SOL the other, and it all happens or nothing does. Nobody holds anyone's money, not even us.

Sell a block →Open the board
  • No desk fee
  • 1 transaction, 2 signatures
  • 0 custody
Deals settled0
Volume0 SOL
Open offers0
Last 24 h0 deals
The problem

A big sell on the chart is a crash you cause yourself.

A pump.fun coin trades on a curve or a pool with a few dozen SOL in it. Sell a few percent of the supply into it and the price falls in one trade, your own fill gets worse with every token, and everyone watching the chart sees it. On Pactum the bag goes to one buyer at one agreed price, and the chart never sees the trade.

Sold on Pactum at
Sold on the chart10.81 SOL

before trading fees, and the price falls 23.8% in that one trade, in front of everyone.

Sold on Pactum, 10% under11.14 SOL

with no desk fee, and the chart moves 0%: the deal never touches the pool.

Example pool holding 85 SOL and 206M tokens. On the desk the same numbers are read live from each coin's real curve or pool.

One transaction

Every line, or none of them.

The desk builds one transaction with exactly these instructions. Your browser checks each one against the signed terms before your wallet opens. If any line would fail, the network drops the whole thing.

  1. 01Compute budgetthe limit and a capped priority feenetwork
  2. 02Buyer's token accountcreated only if missing, paid by the buyerbuyer
  3. 03TokenstransferChecked, seller to buyer, through the coin's own token programseller
  4. 04SOLbuyer to seller: the full price, with no desk feebuyer
  5. 05Memopactum:v1, so the deal can be found on chaindesk
  6. ✓Signed by bothbuyer first, then seller, over the very same bytes
How a deal moves

From a signed offer to settled, in four states.

  1. Listed

    The maker signs the terms as a message. Nothing moves.

  2. Requested

    A taker signs the transaction the desk built, after the browser checked every line.

  3. Approved

    The maker signs the same bytes with one click. The desk sends it.

  4. Settled

    Confirmed on chain. Tokens one way, SOL the other, in the same instant.

The approval window is about a minute. The transaction carries a fresh blockhash, so the network itself kills it if the maker does not approve in time. No durable nonce, no key on our server, no stale signature anyone can sit on. Why

Built against the obvious tricks

The attack list, answered in code.

01Lookalike coins

Deal and coin pages show the full mint and its fingerprint. Coins are pasted by mint, never picked by name.

02The price moving

The maker sets a max chart move. At approval the desk reads the chart live and refuses past it.

03Double fills

One request per offer, a nonce per listing, and a lock until the old blockhash is dead.

04Empty bags

Balances are checked at listing, at fill and at approval, and every transaction is simulated first.

05Tampering

Your browser decodes the transaction and checks every instruction before Phantom opens.

06Wash deals

No filling your own offer, only deals the desk settled on the tape, and round trips left out of all volume.

07A bad desk

It holds no keys. It cannot move anything, change the terms, or slip in an instruction.

08Risky mints

Transfer fees, transfer hooks, permanent delegates and unknown extensions are refused.

On the board now

Open offers

All offers
No open offers right now.The first sell block on the desk could be yours. Post one.
Read back from the chain

The tape

Every deal
No deals settled yet.Every deal the desk settles lands here, read back from the chain and checked line by line.
$PACTUM is coming

Hold $PACTUM, deal sharper.

  • 10 minfirst look at offers of 10 SOL and up
  • Alertson your phone for the coins you follow
About $PACTUM

Too big for the chart?
Take it to the desk.

Sell a block →How it works