Document GP-DOC-17: Economy

The Specimen Transfer Registry

The Exchange (internally, the Specimen Transfer Registry between Contractors) is a peer-to-peer marketplace settled entirely on-chain in USDC-SPL through the genopool_market program. Players trade with each other; the operator runs the venue, takes a royalty, and never takes a position. Specimens are game pieces: creatures bred and raced inside a contest of skill, not financial instruments.

The registry handles three asset classes, all Metaplex Core assets carrying the same enforced royalty:

1. Specimen sheets: the creatures themselves;
2. Lands: recovery parcels (see the Lands chapter). A land with specimens resting on it cannot be listed, and a listed land cannot take new resting specimens;
3. Genesis cage rights: the numbered founder rights; a spent right stays on record but can no longer be listed.

Listings

The program supports two listing kinds:

On every sale, the royalty is computed on-chain with integer floor rounding and split atomically in the same transaction:

ROYALTY_BPS      = 500        // 5 %
royalty          = floor(amount × 500 / 10 000)
seller_proceeds  = amount - royalty

Two properties are structural:

• The royalty is enforced at the asset level. Each specimen is a Metaplex Core asset carrying the Royalties plugin, so the same 5 % applies wherever the asset trades, including third-party venues such as Tensor or Magic Eden. There is no royalty-free side door.
• No operator buyback. The platform never buys or sells its own creatures: no market making, no floor support, no repurchase. Prices are set by players, period.

Nothing random is ever sold on the registry: every listing is a fully disclosed, existing specimen, inspectable in full before any payment.

The Specimen Card: the information travels with the creature

Every specimen is an NFT whose on-chain attributes are the complete record. The buyer sees exactly what the seller sees: there are no hidden IVs, no undisclosed traits, no information asymmetry to pay for.

Because the genome is public on-chain, any asset is scannable by anyone: your roster, a listing, a pasted mint address. Transparency is not a feature of our frontend; it is a property of the asset.

Free tooling: the Genetics Lab

Everything analytical is free and unlimited: total stat transparency is a design constraint, so the tools that read it cost nothing.

• Pedigree Explorer. A navigable on-chain family tree, 6 generations deep, covering any two creatures, including other players'. Kinship mode displays F(A, B) with the resulting stat malus quantified and common ancestors highlighted. Its key use is checking compatibility before buying a stud.
• Cross-Sim. An exact, free, unlimited preview of any cross: your creatures, other players', or live market listings (SIMULATE CROSS sits on every market card). Breeding is a deterministic function, so the preview shows the child's full genome locus by locus (expressed and carried), the 8 projected stats after the F malus, and the estimated IGC radar, computed by the same engine that runs races. The simulation is contractual: what you preview is what a paid cross mints. See Breeding.
• Allele Archive. A personal collection of 48 entries (12 loci × 4 alleles), discovered by owning or scanning a specimen that carries one. Each entry lists its stat effects and its live frequency in the global population: rarity in GENOPOOL is emergent and measured, never decreed.

The Freak Board

A self-updating wall of statistically rare listings, surfaced algorithmically with no operator intervention: no paid curation, no price influence, visibility only. The board promotes outliers: hexapods, webbed feet on land runners, carried recessives, extreme IGC peaks, and combinations below 1 % of the population. Each entry states its case plainly:

RARITY: hexapod + web = 0.3 % OF POPULATION

The Freak Board is the market translation of emergent rarity: because every biome favors different builds, niche morphologies have real demand windows, and the board makes that scarcity legible to buyers.

The outcross loop

The registry is not a bolt-on; it is load-bearing for the breeding game. Inbreeding depression means a closed lineage plateaus: line-breeding a champion against itself degrades the offspring. Reopening genetic diversity requires outside blood, and the loop runs through the market:

closed lineage plateaus (F climbs)
  → scan showcases / filter the registry by F-compatibility vs my roster
  → buy an outside stud
  → Cross-Sim the pair (exact preview, free)
  → pay the cross (fixed price)
  → race or resell the progeny

Every link generates a royalty or a lab fee. This friction is deliberate and declared: the anti-convergence pressure of the breeding meta lives in market economics (cooldown cadence, scarcity and liquidity of outside lineages), not in any hidden engine coefficient. The engine computes deterministic outcomes; the economy sets the friction.

Search filters

Each result card carries free SCAN and SIMULATE CROSS buttons: full inspection before any purchase, always.

What the registry sells, and what it never sells

The registry sells specimens: a genome plus a proven record. It never sells rank. A high-record specimen is desirable, but its buyer must be accredited by their own racing grade to field it at the top: eligibility is always min(account grade, creature class), and owning an asset unlocks no account tier. Combined with bracket stat caps and the fact that IGC is a pure function of the genome, buying on the registry is buying potential and provenance, never victories. The money side of every trade is plain two-currency economics: USDC in, 5 % royalty out, nothing random, nothing repurchased.