Whitepaper
How HoodPacks works: the loop, the token, the odds, and the set.
01 — Overview
HoodPacks is a closed-loop card pack economy on Robinhood Chain. Collectors spend $HPACK to open packs, pull cards across five rarities, and trade what they pull for $HPACK, USDC, or directly with other collectors.
There is no lottery and no draw. A pack is a purchase with a known card count and published odds, settled on-chain the moment you open it. Cards mint straight to your wallet. Nothing is held in custody, and nothing needs our permission to move.
02 — The Hood Loop
$HPACK enters through pack opens, cards mint to the collector, and value returns through the trade market. A share of every trade fee burns, which keeps the loop deflationary instead of extractive.
- Open — Pay the pack price in $HPACK. The open is one transaction; the pull resolves in the same block.
- Collect — Cards land in your vault as transferable tokens. Common through Legendary, every pull is yours to hold.
- Trade — Sell into $HPACK, USDC, or swap direct with another collector. 2.5% fee, partially burned.
03 — Token: $HPACK
$HPACK is the only currency in the economy. Every pack opened burns a share of the spend, so circulating supply contracts as the collector base grows. There is no emission schedule and no staking sink propping up the price.
04 — Pack Tiers
Five packs ship in three tiers. Higher tiers carry more cards per open and shorter odds to the top of the curve, against a smaller print run.
05 — Rarity & Odds
Five rarities across the set. Odds below are per card slot, not per pack, and are published in the contract before a set goes live.
06 — Provably Fair Pulls
Every open resolves against an on-chain randomness source. The odds table is written into the pack contract at deploy and cannot be edited afterward, so a pull you dispute can be replayed from public data.
- Odds are immutable per set. Changing them requires deploying a new set.
- Every open emits an event with the pack id, the seed, and the resulting card ids.
- No pre-reveal. Nobody, including the team, knows the contents of a pack before it is opened.
07 — Trade Market
Cards are transferable from the moment they mint. The in-app market is a convenience, not a gate: any wallet can move a card anywhere without touching HoodPacks.
08 — Set 1: Sherwood
The opening set is 24 cards drawn from the Robin Hood ballads — the Gest, the Child ballads, and the later literature. Card art is in production.
09 — Roadmap
10 — Risks
HoodPacks is a collectible product, not an investment. Card values are set by whoever is willing to buy them, and that can be nobody. $HPACK can go to zero. Smart contracts can hold bugs regardless of review. Only spend what you are willing to lose entirely.