Whitepaper · v1.0 · Robinhood Chain
Abstract. PayDirt Miners is a fee-funded mining game on Robinhood Chain. A fixed set of 4,949 pixel miners, each carrying its own on-chain wallet, work timed shifts. The fees the game collects accumulate into a pot that periodically buys real-world-asset tokens — gold, silver and oil — and distributes them to active miners by weight. A permanent career system, a fixed-price NFT/token exchange, interest-free collateral loans, and a pool-capped gamble round out the loop. The game mints no reward currency of its own: rewards are bought with fees, and the game token $PAYDIRT is fixed-supply and only ever burned. This paper describes the mechanics, the reward engine, the token sinks, the launch, and the security posture.
The collection is 4,949 miners. Each is drawn deterministically from its token id, so its art and traits are fixed at mint and reproducible by anyone from the same on-chain metadata. Professions are assigned at mint and split 2,206 gold / 1,643 silver / 1,100 oil.
Every miner owns an ERC-6551 token-bound account — a smart-contract wallet controlled by whoever holds the NFT. This is where the miner's earned commodity is held. Because control follows ownership, the stash transfers with the NFT on a sale, an Assay deposit, or a loan. Art and metadata are pinned to IPFS and referenced by an immutable base URI once the collection is finalized.
Two flows run in opposite directions. ETH fees flow into the Motherlode and come back out as commodity rewards; $PAYDIRT flows into the game's sinks and is burned. The first pays miners; the second keeps the token scarce.
Miners gain weight by working shifts (five tiers, weight 100–300). Fees collect in the Motherlode. When the pot clears 0.025 ETH, anyone may call strike(). A strike:
0.1 ETH; 0.5% is paid to the caller as a keeper bounty;Miners vote to steer the asset. Crucially, the winning asset is latched at the first strike of a batch and the vote epoch only advances when the batch fully drains. This means one miner cannot loop vote → strike → re-vote in a single transaction to capture a batch or farm progression XP — a batch is one decision, made once. A batch drains over at most ten strikes, then a new one forms. Earned commodity is delivered to a miner's stash by a permissionless harvest().
Rewards are inherently reflexive: a fixed pot splits across all active weight, so the per-miner payout falls as the crowd grows. There is no fixed rate and no promised return.
$PAYDIRT is the game currency, launched separately on the Pons launchpad with a fixed supply. No game contract can mint it. It is spent — and largely burned — across shift fees, promotions, and the Mine Shaft. The Assay Office mints and burns it one-for-one against NFTs held in inventory, so its supply effect nets to zero. Loans move existing principal and add none. The result is steady deflationary pressure that offsets the commodity flowing out through strikes.
Miners accumulate permanent XP for first-time shift milestones, votes, and harvests. Promotion through six ranks requires both an XP threshold and a $PAYDIRT payment; each rank unlocks a heavier shift. XP is bound to the NFT and survives every transfer, so a miner's career is part of its identity, not a wallet's balance.
The Assay Office exchanges a miner for exactly 20,000 $PAYDIRT, backed one-for-one by the NFT it takes into inventory; the reverse burns the same amount plus a fee to pull the next miner from a first-in-first-out queue. Grubstake Loans lend 12,500 $PAYDIRT against a miner with no interest — repayment is exactly the principal. The only cost is a small upfront ETH fee that sets the term and feeds the Motherlode; a defaulted loan is liquidated into the Assay so the pool is always recapitalized.
The Mine Shaft is a $PAYDIRT sink shaped as a gamble. A player pays to descend for a chance at a payout drawn from a prize pool that the treasury seeds and losing runs replenish. The payout is capped at the live pool, so the treasury can never lose more than it seeds, and the odds are the operator's to set. Randomness uses a commit-reveal on a future block, so a player cannot pick a winning moment.
$PAYDIRT launches first on Pons; the game contracts deploy afterward against the token's address. The collection mints closed, rewards start disabled, borrowing starts paused, and every value-moving gate opens only by deliberate operator action after post-deploy verification. Gold, silver and oil rewards are enabled per-asset as real inventory is funded — practically silver and oil first, given how little GLD exists on-chain today.
The contracts are immutable and hold no owner path to drain user funds. Reward liabilities, escrows, the loan pool and the Assay reserve are protocol-owned and cannot be swept; only genuinely stray transfers are recoverable, through bounded rescue functions. Ownership transfers to the operator are two-step, minting and the reward engine ship paused, and metadata and pricing are frozen only after the CID is verified to resolve. The reward adapter is a transparent custodial inventory bridge, not a trustless DEX; it can never mint the issuer tokens.
PayDirt Miners is a game, not an investment, and carries no promise of profit or yield. Rewards depend on real fee flow and serviceable inventory, dilute as more miners participate, and can be zero. $PAYDIRT and the miners can lose all value. The gold, silver and oil tokens are Robinhood asset tokens representing fund-share exposure — not physical metal or barrels — and their behavior is outside the game's control. This project is independent and unaffiliated with Robinhood. This document describes software in development; parameters and mechanics may change before launch.