OPEN DIGITAL PACKS.
COLLECT RARE CARDS.
Provably-fair drops. Instant buybacks.
Real collectible value.
Provably Fair
Every pull uses committed seeds + your transaction signature for verifiable randomness.
Instant Buyback
Sell instantly or ship it home.
Live Odds & EV
See real time availability, expected value, and rarity tracking
How It Works
Select a Pack
Browse available packs and review live odds, expected value, and card rarities
Reveal Your Card
Experience provably fair randomness as your card is drawn from the pool
Sell or Ship Home
Instantly sell back for USDC or have your card shipped to you
Frequently Asked Questions
What is RareCache?
RareCache is a provably fair digital pack opening platform built on Solana. Open packs, collect rare cards, and instantly sell them back or have them shipped to your home.
How does provably fair randomness work?
Each pack uses committed server seeds combined with your transaction signature to generate verifiable randomness. You can verify the fairness of every pull using the verification page.
What payment methods do you accept?
We accept USDC on the Solana blockchain. Connect your Solana wallet (Phantom, Solflare, etc.) to get started.
How does the buyback system work?
Every card has a guaranteed buyback value. After opening a pack, you can instantly sell your card back for USDC at the listed buyback percentage or choose to have it shipped to you.
Can I get physical cards shipped to me?
Yes! After pulling a card, you can choose to have it shipped to your address instead of selling it back. Shipping options are available during the reveal process.
What is Expected Value (EV)?
Expected Value is the average value you can expect from opening a pack based on current card availability and odds. An EV above the pack price means the pack is statistically profitable.
How do I verify my pulls?
Visit the Verify page and enter your Open ID to see the server seed, client seed, and mathematical proof that your pull was fair and random.
Are there any fees?
The pack price includes all platform fees. You only pay standard Solana network transaction fees (typically less than $0.01) when sending USDC.