Documentation
The ERC-5D Standard
ERC-5D is the formal name for the set of four on-chain properties implemented in PAWN. Each dimension is independently meaningful and composable with the others. Together, they describe a token that behaves simultaneously as a fungible asset, a non-fungible collection, a typed identity system, and a holder-driven reward accumulator.
Background: ERC-404
ERC-404 introduced the foundational idea: a token that is simultaneously ERC-20 and ERC-721. Buying enough tokens mints an NFT to your wallet. Selling enough burns it. This gave fungible tokens an embedded non-fungible layer and made NFT collections natively liquid through AMM trading.
ERC-404 had two dimensions: fungible and non-fungible. ERC-5D extends this with two additional layers, each solving a limitation of the original model.
The four dimensions
Hybrid
PAWN is a standard ERC-20 token with 18 decimal places and a fixed supply of 2000 units, fused with an ERC-404 NFT layer. Buying mints a Pawn to your wallet; selling burns it. The collection is hard capped at exactly 2000 Pawns with no mint function. Four equal art types are assigned by deterministic round-robin. Any ERC-20 compatible wallet, exchange, or smart contract can interact with PAWN using the standard interface. The fungible layer is not modified or restricted in any way that would break standard ERC-20 behavior.
Rewards
Holding earns. A tax on trades (10% for the first 15 buys, then 3% permanently) streams back to holders as ETH, alongside a PAWN token stream from the Phalanx reserve. The reward weight vector is [0, 1, 2, 3], rotating one slot per epoch across the four types. Over any complete four-epoch cycle, every type receives each weight exactly once, for the same total. No ranks, no best type. Rewards are deterministic and fully on-chain. Holders call claim() on the Treasury within 24 hours of each epoch distribution to receive their share.
Access
Every Pawn is a credential. Ownership is the on-chain key to gated mechanics, allowlists, and protocol voting. The contract gates protocol mechanics and external allowlists by wallet-level PAWN balance. Any integrating protocol can read this credential without additional infrastructure.
Open
ERC-5D is built to extend. The reward system operates without any off-chain infrastructure. The accounting model uses MasterChef-style per-holder accumulators, making reward calculation O(1) per holder; no iteration over all holders is required at distribution time.
New utilities, staking, governance, cross-protocol hooks, and additional reward streams plug in as further dimensions over time, with no migration and no holder action required. Four is where it begins.
Relation to ERC standards
ERC-5D is a marketing and conceptual label, not an Ethereum Improvement Proposal. The underlying implementation uses the formally standardized ERC-20 and ERC-721 interfaces in full compliance. Any tool that understands ERC-20 can read PAWN balances. Any tool that understands ERC-721 can read NFT ownership and metadata. ERC-5D adds behavior on top of these standards without breaking them.