pump.funCreator fees, credited to for Hugging Face repo owners

Launch a coin for any open model. The fees flow back to whoever trained it.

Point a pump.fun coin's creator fees back at the people who built a model, dataset or Space on Hugging Face. They sign in with Hugging Face and withdraw in SOL, with a public receipt for every fee.

Read the docs

Creator fee: 0.30% of every curve trade10,000 bps routedReceipt for every push

Play · about a minute

Launch a coin for a model. See who gets paid.

Launch a coin for a repo and watch each trade's creator fee flow back along the chain to the author, not to you. Then sign in as the author and withdraw.

Simulation · not real money

1Launch
2Trade
3Claim

Paused0:30 left14:00 sim Runs in your browser

1 · Pick an open repo

lumen-7b-instructModelnorthwind-labs tinyvoice-ttsModelkaito-audio sparrow-ocrSpacefieldnote-ai

Fictional repos and authors. In this demo nobody has signed in yet, so every author starts Unclaimed.

Launch. Two simulated signatures: create the coin, then fee sharing at 10,000 bps to the treasury.
Trade for 30 seconds. Every trade pays 0.30%. The vault pushes to the treasury and the ledger prints a receipt.
Claim. Switch to the author, sign in (simulated) and withdraw.

2 · Launch its coin Simulated

Hugging Face repo

hf.co/northwind-labs/lumen-7b-instructResolved

northwind-labsorganization · id 65a3f0e2…a4c8 · pinned

Unclaimed

Name

Ticker

Fees route to northwind-labstreasury · 10,000 bpsLock the split

1Create coin2Fee-sharing config

Nothing is signed and nothing leaves this page. The market that follows is simulated: 30 minutes of trading in 30 seconds.

$LUMENLumen 7B Instructfor northwind-labs/lumen-7b-instruct

Unclaimed

Not endorsed by northwind-labs. They haven't said anything about this coin.

MC 28.0 SOL · sim

Volume: 0.00 SOL
Trades: 0
Creator fees · 0.30%: 0.000000 SOL
You, the launcher: 0 SOL

Trade too if you like. Buys and sells pay the same 0.30%, and it still goes to the author.

Market closed at 14:30.

northwind-labsNot signed in

Unclaimed

Claimable0.000000000 SOLcredited to account id 65a3f0e2…a4c8

1
Sign in with Hugging FaceSimulated button. No account is contacted.
2
Add a Solana walletAny wallet the author controls.
3
Withdraw the balanceMinimum 0.005 SOL. Backprop pays the network fee.

Demo complete · simulated

0.0000 SOL flowed back to the author.

In the real thingAnyone can launch a Backprop coin for a public Hugging Face repo. pump.fun charges a 0.30% creator fee on every curve trade; fee sharing sends 10,000 bps of it to the Backprop treasury, and the ledger credits the owner's account id the exact lamports that arrived, with a numbered receipt. The launcher gets none of it and Backprop takes no cut. Until the author signs in, every page says "Not endorsed by" them.

Demo speed: 30 minutes of trading in 30 seconds. The 0.015 SOL push minimum is a demo value. No SOL, wallet or Hugging Face account was involved.

Where the fee flows back live

NL
northwind-labsUnclaimed
Claimable0.000000
Ledgercredits id 65a3…a4c8
0 receipts0.000000
Backprop treasury10,000 bps · holds until claimed
Holds0.000000
Creator vaultpushed at 0.015 SOL · demo
In vault0.000000
Every trade0.30% creator fee
Fees0.000000

Launcher (you)0 SOL · by design

Receipts 0

Receipt #000001 prints on the first push.

123 pick a repoEnter launchB buy · S sell while trading

Explore

Coins launched for open repos

Preview

$LUMENModel
lumen-7b-instruct
Pays northwind-labs
Author signed in
Claimed2.184 SOL routed
$TINYVModel
tinyvoice-tts
Pays kaito-audio
Not endorsed by kaito-audio
Unclaimed0.312 SOL waiting
$SPRWSpace
sparrow-ocr
Pays fieldnote-ai
Author signed in
Claimed0.476 SOL routed
$MORSEModel
morse-coder-14b
Pays openlattice
Not endorsed by openlattice
Unclaimed0.958 SOL waiting

$DUNEModel
dune-depth-v2
Pays saltflat-research
Author signed in
Claimed0.221 SOL routed
$CAIRNDataset
cairn-sft-120k
Pays cairnfield-data
Not endorsed by cairnfield-data
Unclaimed0.087 SOL waiting
$QUILLModel
quill-embed-small
Pays paperkite
Author signed in
Claimed0.634 SOL routed
$FERNModel
fern-vl-3b
Pays greenhouse-ml
Author signed in
Claimed0.143 SOL routed

Sample coins and handles. Explore lists real coins from the first launch, each with its author's status.

Analytics

Creator fees routed

$0.00

All time · 0.000000000 SOL · 0 receipts

Coins launched: 0
Authors credited: 0
Withdrawn: 0 SOL

Launch

Two signatures

Preview

1Repo

2Coin

3Sign

Hugging Face repo

hf.co/northwind-labs/lumen-7b-instructResolved

northwind-labsorganization · id 65a3f0e2…a4c8 · pinned

Claimed

Name

Lumen 7B Instruct

Ticker

LUMEN

Image

Generated card

Replace with your own

First buy (optional)

0.50 SOL

Fees route to northwind-labstreasury · 10,000 bpsLock the split

Sign 1: create + buy · Sign 2: fee-sharing configLaunch coin

Connect a wallet to launch a coin

Payouts

Receipts, newest first

How receipts work

No receipts yet.

Receipt #000001 is written when the first coin's fees are pushed.

Each receipt carries the push tx, the credited account id and SOL/USD at that moment.

Docs

The short version

Read the docs

Getting paid

Every trade pays a creator fee. Backprop pushes it to the treasury and credits the repo owner the exact amount that arrived, with a numbered receipt.

Launching

Paste a hf.co link. The owner is pinned by account id, then you sign twice: create (plus an optional first buy) and the fee-sharing config.

Eligibility

Public models, datasets and Spaces. Private and gated repos are refused, and so are repos whose authors opted out.

Claiming

Authors sign in with Hugging Face, add any Solana wallet and withdraw the balance. Minimum 0.005 SOL; Backprop pays the network fee.

Why Backprop

Open models get forked, quantized and memed within hours. Backprop sends the fees back to the people who trained them.

One release, day oneExample

northwind-labs/lumen-7b-instructt+0Original weights, trained by the author
sample-quants/lumen-7b-instruct-GGUF+2hQuantized
tinkerbay/lumen-7b-instruct-AWQ+5hQuantized again
sidequest-ft/lumen-7b-roleplay+1dFine-tuned
$LUMEN+1dA coin. On Backprop, its creator fees flow back to northwind-labs, at the root.

Docs · How fees move

From a trade back to the author, in five steps

Every step is either an onchain transaction or a public ledger entry. Nothing in between is a promise.

01
Trade
Someone buys or sells the coin. pump.fun charges a creator fee on every trade: 0.30% on the bonding curve.
buy 2.000 SOL → fee 0.006 SOL
02
Creator fee
The fee accrues in the coin's creator vault. The fee program splits it by the coin's sharing config.
vault +0.006000000 SOL
03
Treasury
Once the vault clears the minimum, the Backprop crank calls distribute. 10,000 bps goes to the treasury.
distribute → treasury 100%
04
Ledger
The ledger credits the owner's account id the exact lamports that arrived, and writes a receipt with the tx and SOL/USD at that moment.
credit 65a3…a4c8 · #000001
05
Author
The owner signs in with Hugging Face and withdraws the whole balance to any Solana wallet.
withdraw ≥ 0.005 SOL

Values in the chips are an example: one 2 SOL buy on the bonding curve.

Fee math

fees = volume × creator fee rate

On the bonding curve: 0.30% of every trade
After graduation (PumpSwap): 0.30% stepping down to 0.05%
Share routed to the author: 10,000 bps
Backprop's cut: none

Example

A coin trades 250 SOL on the curve. 250 × 0.30% = 0.75 SOL is credited to the repo owner.

Routed fees come from trading, not donations. Nobody is asked to give anything; traders already pay the creator fee.

BackpropSample

RECEIPT #000001

Push · creator fees credited

Coin: $LUMEN
Repo: northwind-labs/lumen-7b-instruct
Credited to: northwind-labs (org)
Account id: 65a3f0e2…a4c8

Amount: 0.750000000 SOL
SOL/USD at push: $212.40
Value: $159.30

Push tx: 4Kq9…xR2w
Slot: 449,688,037
Time: 2026-09-23 14:02:11 UTC

Sample receipt · not a real push

Docs · Verify it yourself

Verify it yourself

You don't have to trust this website. Every Backprop route is a pump.fun fee-sharing config you can read on chain, and every credit points at a transaction.

Backprop route specification
Fee program	`pfeeUxB6jkeY1Hxd7CsFCAjcbHA9rWtchMGdZ6VojVZ` pump.fun fee sharing. Holds each coin's sharing config and splits its creator fee.
Pump program	`6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P` The bonding curve every coin trades on before graduation.
Instructions	`createFeeSharingConfig` then `updateFeeShares` One shareholder: the Backprop treasury at 10,000 bps (100%).
Treasury	Published at launch One address for every Backprop coin. It receives every push and pays every withdrawal.
Set by	The launcher's wallet, in the second signature of the launch. With Lock the split on (the default), the same transaction revokes the split admin, so the route can never change.
Config address	`PDA(["sharing-config", mint], fee program)` Derive it from the mint. No Backprop API involved.
How the owner is named	In the coin description: repo path and the owner's Hugging Face account id, pinned on IPFS with the metadata. The ledger credits the account id, not the username, so renames don't matter.
After graduation	The creator fee keeps coming from the PumpSwap pool. It steps down from 0.30% to 0.05% as market cap grows. The same config routes it; nothing changes for the author.
If the split changes	Route unverified Shown in red on the coin page when the config stops naming the treasury at 10,000 bps. The coin leaves Explore.

Check a coin in four steps

Open the coin on pump.fun. Creator fee sharing lists one shareholder: the Backprop treasury at 10,000 bps.
Derive the config from the mint (below) and read it in any explorer. Same shareholder, same bps.
Open the metadata. The description names the repo and the owner's account id.
Pick any receipt. Its tx moves SOL from the coin's vault to the treasury, and the credit matches to the lamport.

derive-config.ts@solana/web3.js

// Find a coin's fee-sharing config. No Backprop API.
import { PublicKey } from "@solana/web3.js";

const FEE_PROGRAM = new PublicKey(
  "pfeeUxB6jkeY1Hxd7CsFCAjcbHA9rWtchMGdZ6VojVZ"
);
const mint = new PublicKey(COIN_MINT);

const [config] = PublicKey.findProgramAddressSync(
  [Buffer.from("sharing-config"), mint.toBuffer()],
  FEE_PROGRAM
);
// Expect one shareholder: the Backprop treasury, 10,000 bps.

Backprop is custodial between push and claim

Credited fees sit in the treasury until the owner withdraws. The treasury address, every receipt and every withdrawal are public, so anyone can reconcile the ledger: the treasury balance must cover every unclaimed credit.

Leaderboard

Top models and authors

Ranked by SOL routed, never by market cap. Both boards are empty until the first push, and they say so.

Top models

by SOL routed · All time

#	Coin / repo	Author	Routed
1			— SOL
2			— SOL
3			— SOL
4			— SOL
5			— SOL

No coins yet.

A coin shows up here after its first push lands in the treasury.

Top authors

by SOL credited · All time

#	Coins	Credited
1	—	— SOL
2	—	— SOL
3	—	— SOL
4	—	— SOL
5	—	— SOL

No authors credited yet.

An author appears once a receipt names their account id, claimed or not.

Authors

Nobody speaks for the author

Anyone can launch a coin for a public repo. That doesn't make the author part of it, and every coin card and author page says exactly where they stand.

Unclaimed: Fees are waiting and the author hasn't said anything. The coin carries the line "Not endorsed by <owner>" wherever it appears.
Claimed: The author signed in with Hugging Face and collects the fees. It says they're being paid, not that they vouch for the coin.
Opted out: One click after signing in. New launches for their repos are blocked; balances already credited stay claimable.

Routed fees come from trading, not donations.

Traders already pay pump.fun's creator fee on every trade. On a Backprop coin, that fee goes to the repo owner instead of the launcher.

northwind-labs Claimed

Organization · id 65a3f0e2…a4c8

Sample

Credited: 2.184 SOL
Withdrawn: 0.900 SOL
Claimable: 1.284 SOL

Coins for this author's repos

$LUMEN lumen-7b-instruct

Route verified2.184 SOL

kaito-audio Unclaimed

User · id 64d9b3a1…17bf

Sample

Credited: 0.312 SOL
Withdrawn: 0.000 SOL
Claimable: 0.312 SOL

Coins for this author's repos

$TINYV tinyvoice-tts

Route verified0.312 SOL

Claim

Authors withdraw in SOL

No setup before the first fee and no forms. The Hugging Face account that owns the repo is the claim.

1
Sign in with Hugging Face
Backprop matches your account id against the ledger. For an organization, any org admin can claim.
2
Add a Solana wallet
Any wallet you control. You can change it before each withdrawal.
3
Withdraw the whole balance
Minimum 0.005 SOL. Backprop pays the network fee, and the withdrawal gets its own numbered receipt.

Rather not? Opt out after signing in. New launches for your repos are blocked, and whatever was already credited stays yours to claim.

Author payouts

Preview

northwind-labsSigned in with Hugging Face · org admin

Claimed

Claimable1.284000000 SOL≈ $272.72 at $212.40

Payout wallet: Add a Solana wallet
Network fee: paid by Backprop
Minimum: 0.005 SOL

Withdraw 1.284 SOL

Receipts

#000231Push$LUMEN · 23 Sep 14:02+0.1843
#000198Push$LUMEN · 22 Sep 21:40+0.2210
#000144Withdrawto wallet · 19 Sep 10:12−0.9000
#000121Push$LUMEN · 18 Sep 08:55+0.3021

Connect a wallet, then sign in with Hugging Face to claim

The token

$BACKPROP

Launched on pump.fun. 1,000,000,000 supply. No presale.

$BACKPROP's own creator fees are routed with pump.fun fee sharing to the Backprop operations wallet, published at launch and shown on the coin page. They pay for the crank, RPC, withdrawal network fees and hosting. That is the whole business model, which is why Backprop takes no cut of routed fees.

Spotlight vote (planned). Each week, wallets holding 100,000 $BACKPROP or more pick one claimed repo for the Home spotlight. One wallet, one vote.
No share of author fees. Fees routed to authors are theirs. Holders don't get a cut, and neither does Backprop.

Buy on pump.fun DexScreener

Ticker: $BACKPROP
Supply: 1,000,000,000
Presale: None
Launched on: pump.fun, Solana
Creator fees: pump.fun fee sharing → ops wallet
Ops wallet: Published at launch
Contract

The ops wallet and the fee-sharing config are both visible on the pump.fun coin page. If they ever differ from what's listed here, trust the chain.

Roadmap

What ships, in order

Now01
Token and site
- $BACKPROP launched on pump.fun
- This site, the fee-flow docs and the verification guide
- Treasury and ops wallet addresses published at launch
Next02
Backprop v1
- Launch form: repo resolution, account-id pinning, generated card, optional first buy
- Fee-sharing config at 10,000 bps, split lock on by default
- Crank, ledger and a numbered receipt for every push
- Hugging Face sign-in, withdrawals, org admin claims, one-click opt-out
- Public ledger export and a reconciliation page
Later03
Author tools
- Dataset splits: route part of a model coin's fees to the datasets named in its model card (up to 10 recipients)
- A "Claimed on Backprop" badge authors can add to a model card
- $BACKPROP spotlight vote

FAQ

Questions people ask first

Short answers. The long ones are in Verify it yourself.

Does the author need to know?

No, and the site never pretends they do. Fees are credited to the repo owner's account id from the first push, whether or not they ever sign in. Until they do, the coin is marked Unclaimed and every page for it says "Not endorsed by <owner>". Once signed in, the author can claim, or opt out in one click.

What if the repo is renamed or moved?

Nothing changes. At launch the repo is resolved to the owner's permanent Hugging Face account id, and that id is what the ledger credits. Usernames, org names and repo paths can change; the id doesn't. If a repo is transferred to a new owner, coins launched before the transfer keep crediting the owner at launch.

What about organizations?

Org-owned repos credit the organization. Any admin of the org can sign in with Hugging Face and withdraw the org's balance to a wallet they add. Each withdrawal receipt shows which admin made it.

Who holds the SOL?

The Backprop treasury, between the push and the claim. That is custody, and we say so plainly. The treasury address is published at launch, and every receipt and withdrawal is public, so anyone can check that the treasury holds at least the sum of unclaimed credits.

Can anyone launch a coin for any repo?

Anyone with a Solana wallet can launch for any public model, dataset or Space, unless the owner has opted out. More than one coin can point at the same repo; every one of them credits the same owner and shows the same Claimed or Unclaimed status.

Private or gated repos?

Refused. The resolver only accepts repos it can read without signing in. Private repos and gated repos (where the author asks people to accept terms first) can't be launched, so nobody launches a coin for something an author keeps behind a gate.

Can the launcher change the split?

Not with Lock the split on, which is the default: the launch transaction revokes the split admin, so the route can never change. If a launcher turns the lock off and later edits the split, the coin page shows the route as unverified in red and the coin leaves Explore. Fees that stop reaching the treasury are never credited, because nothing arrives to credit.

What does $BACKPROP do?

It pays for Backprop. Its own creator fees fund the crank, RPC, withdrawal network fees and hosting, which is why Backprop takes no cut of routed fees. Holders will vote each week on the Home spotlight, one claimed repo at a time. Holding $BACKPROP gives no share of author fees; those belong to authors.

Launch a coin for any open model. The fees flow back to whoever trained it.

Launch a coin for a model. See who gets paid.

Market closed at 14:30.

0.0000 SOL flowed back to the author.

Explore

Analytics

Launch

Payouts

Docs

Getting paid

Launching

Eligibility

Claiming

From a trade back to the author, in five steps

Trade

Creator fee

Treasury

Ledger

Author

Verify it yourself

Check a coin in four steps

Backprop is custodial between push and claim

Top models and authors

Top models

Top authors

Nobody speaks for the author

Authors withdraw in SOL

Sign in with Hugging Face

Add a Solana wallet

Withdraw the whole balance

Author payouts

$BACKPROP

What ships, in order

Token and site

Backprop v1

Author tools

Questions people ask first