Every buy forges a Rocky.

The hook

Most tokens are passive. They move from wallet to wallet and nothing else happens. $ROCK is a Token-2022 token with a transfer hook: a small program that Solana runs automatically every time the token moves, in the same transaction, with no way to skip it.

RockHook's hook doesn't charge anything and can't touch your funds. It does one thing: it watches the token leave the Meteora bonding curve and writes down who received it. That record is what a Rocky is forged from.

Think of it as a notary sitting inside the token. Every buy on the curve gets witnessed and stamped, whether it came through the RockHook site, Jupiter or a trading terminal.

Anatomy of a buy

A buy is one Solana transaction. Inside it, three programs pass control down the line, and the hook runs last, while the transaction is still open.

If any step fails, the whole buy fails. So a buy without a ticket can't exist, and a ticket without a buy can't be written.

The ticket

The ticket is a small on-chain account owned by the hook program. Only the hook can write it, and anyone can read it. Here is what one looks like:

Because the buy number and size are written by the program at the moment of the trade, the biggest buyer, the buy that fills the curve and every tier are facts on the chain. Nobody picks winners by hand.

Forging

The Rocky itself is minted right after the trade, not inside it. That is a deliberate choice. Solana limits how deep one program can call another, and a buy routed through an aggregator like Jupiter is already several calls deep when it reaches the hook. Minting an NFT inside the hook would push those buys over the limit and make them fail.

So the hook only writes the ticket, which is cheap and always fits, and the forge turns tickets into Rockies a few seconds later. If you'd rather not wait, you can claim your Rocky from your ticket yourself. Each ticket forges exactly one Rocky, once.

Rockies are Metaplex Core NFTs, so they show up in Phantom and trade on Solana NFT marketplaces like any other collection.

Temperature

A Rocky's tier is decided by how much $ROCK the single buy that forged it received, which is exactly what the hook sees move. There is no dice roll and nothing hidden. Anyone can check a ticket and know which Rocky it produces.

Because the curve's price rises with every buy, the same SOL gets less $ROCK as the market cap climbs, so early buyers burn hotter by design. The hook also values each buy in SOL at the curve's current price, and buys under 0.1 SOL don't get a ticket, which keeps the collection free of spam.

At graduation, three Rockies go supernova. Two are facts on the chain: the one forged by the buy that fills the curve (if that last buy is under 0.1 SOL and forges nothing, the last buy that did), and the biggest buy of the wallet that bought the most on the curve in total. That wallet's Supernova is kept even if it sold before graduation. If its biggest buy is also the one that filled the curve, that Supernova passes to the runner-up, the wallet with the second biggest total, so the three always go to different buys. The third is drawn from every other Rocky still lit at graduation. When graduation is recorded, the program fixes a Solana slot 8 slots ahead, and that slot's hash, unknown until the network produces it, picks the winner. Nobody, the team included, can know or choose it in advance. Each Rocky's chance grows with the size of the buy that forged it, so splitting a buy into many small ones doesn't help. Every Rocky stays frozen until all three show as Supernovas, so nobody can buy a winner off an owner who doesn't know yet.

Burning out

The hook runs on sells too, since a sell moves $ROCK back into the curve. When a wallet sells before graduation, the hook flags that wallet's tickets as burnt out, and the forge switches those Rockies to the ash artwork. The flag is permanent: buying back later doesn't relight an old Rocky, though new buys still forge new ones.

After graduation the hook is gone, so trading can no longer burn anything out. Every Rocky still lit at graduation stays lit.

Graduation

When buys push $ROCK to a $200,000 market cap, the last buy completes the curve. Meteora moves the liquidity into a DAMM v2 pool, where it is locked forever, and removes the hook from the token as part of the migration. From that moment $ROCK is an ordinary token and the forge is closed. Right after, the hook program is locked for good: its upgrade authority is revoked, so nobody, the team included, can ever change the Rocky rules again.

Tickets written before graduation can still be claimed afterwards. What can't happen is a new ticket. The number of Rockies that will ever exist is fixed by the curve.

Stack and addresses

The hook program, the forge and the tests that run a whole launch on a local copy of Solana are open source, so anyone can read the rules and run the forge themselves: github.com/devsolusd1/rockhook.