⚒SLABTRACK · AUCTIONS
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SLABTRACK · AUCTIONS

Lower bidsrun longer.

The card auction where you pick how long the clock runs.Reserve committed on-chain before any bid. Provably fair. Anti-snipe by default.

Lock in your first bid How it plays
0 LIVE·22 AVAILABLE
You set the tempo

60% bid → 5 days. 99% bid → 24 hours. The bid % decides the clock.

Reserve before bid

SHA-256 hash + 32-byte salt anchored on Solana before anyone bids.

Anti-snipe baked in

A bid in the final 60s extends the clock. No last-second steals.

LIVE SIMULATION

Watch a Lock-In Bid play out.

Card → bid % → clock locks → reserve anchors → live → close → reveal. Switch scenarios below.

THE MATH

Your bid % sets the clock.

Bid low and you get a long window — more time for someone to outbid you, but if nobody does, you steal the card. Bid high and the clock collapses — commit and close.

60–69%
The Steal
5-day
70–79%
Patient
3-day
80–89%
Decisive
2-day
90–99%
Closing fast
24-hour
LOWER BID

Long clock = more chances for someone to outbid you. But if nobody does, the card is yours below market.

HIGHER BID

Short clock = fast commitment. You're close to comp; you're telling the market you want this and you're willing to close it now.

PROVABLY FAIR

We can't move the reserve. You can prove it.

The seller's reserve is committed via SHA-256 hash + 32-byte salt and anchored on Solana before any bid is accepted. Reveal at close. Recompute in your browser. The math is the trust.

Anchored before bid #1

The reserve commit hash is written on Solana before the auction goes live. Once the txn is in the ledger, the seller cannot raise (or lower) the floor.

Hash + salt, not the number

What's anchored is SHA-256(reserve + 32-byte random salt). The number itself is private until close. Pre-image attacks are infeasible.

Verify in one click

At close the reserve + salt are revealed. Every auction page shows the reserve, the salt, and the txn hash so you can recompute the SHA-256 yourself.

Read the full explainer

FIRST TIME BIDDING?

Two minutes. Three steps.

No password, no signup form, no “create account” wall. Drop an email, save a card, lock in a bid.

1
~30s

Email + magic link

Drop your email. We send a link. Click it. You're in. Account auto-creates. No password, ever.

2
~30s

Save a card

One-time Stripe SetupIntent. Card stays on file securely. Used for holds + payouts on every future bid.

3
1 click

Lock in a bid

Pick a card, set your bid %, submit. Stripe holds the amount until close. Outbid? Hold releases automatically.

One account works across the whole ecosystem. Logged in on Storefront or ToT? You're already logged in here.

FEES, PUBLICLY

No buyer's premium. No surprises.

Buyer pays bid + shipping. Seller pays a flat 5% plus Stripe processing. Same math, every time.

Regular seller

$500 sale
Hammer$500.00
Platform fee (5%)−$25.00
Stripe (2.9% + $0.30)−$14.80
Seller payout$460.20
Effective seller cost: 7.96%

Operator (admin)

Same $500 sale, admin bypass
Hammer$500.00
Platform feeWAIVED
Stripe (2.9% + $0.30)−$14.80
Seller payout$485.20
Effective cost: 2.96% (Stripe only)
SELLER ALL-IN COST · $500 HAMMER
SlabTrack Auctions
7.96%
MySlabs
6.46%
Whatnot
~10.5%
Fanatics Collect
~13%
eBay
13.31%
Goldin / PWCC
15-20%
Stripe is industry-standard 2.9% + $0.30 across every platform listed. Comparisons reflect publicly stated rates as of 2026-Q2.

ECOSYSTEM

Auctions is one surface of four.

Cards flow through the same inventory layer. Sell at market in Storefront, play games in ToT, run auctions here.

Storefront

Vendor shops with smart pricing and want boards.

storefront.slabtrack.io

ThisOrThat

Provably-fair flip and pull games on real cards.

thisorthat.slabtrack.io

SlabTrack

The operator console. Inventory, pricing, and grading.

slabtrack.io

Pick the clock.
Lock in the bid.

Your bid % decides the duration. The reserve is anchored. The math is the trust.

Lock in your first bid