Zenkai
Docs
A short walkthrough of Zenkai — capsules, vault, market, and account.
Getting started
What is Zenkai
Zenkai is a collectibles platform. You open capsules that contain real graded cards we hold in vault. After each open you choose: keep (vault), sell back instantly, list on the market, or redeem for shipping later.
Outcomes are checkable. Odds update with the live pool. Balances use USDnr (shown as dollars while pegged).
Sign in
Sign in with email, social, or a wallet. We provision an embedded wallet for you — gas is sponsored, so you do not need to hold chain tokens to pull or trade.
You must be 18+ and outside OFAC-sanctioned regions.
Fund your balance
Deposit USDnr to your wallet address, or convert USDC when the deposit flow is available. Your header balance is what you spend on capsules, bids, and buys.
USDnr balance
$128.40
Shown as $1 while pegged
Withdrawals send USDnr to an address you confirm. There is no platform withdrawal fee.
Capsules
Browse & open
Open the Capsules catalog. Each card shows price and status. Tap through to detail for odds, contents, and recent pulls — then open one or more.
Published
Starter Capsule
$50.00
Floor $25 · EV ~$54 · 87 items
Odds, EV & floor
- Odds — share of remaining items in each display tier. They move as the pool changes.
- Floor — lowest reference value still in the pool (often below price).
- Pack EV — average marked reference across the pool, usually a bit above price. It is not a guarantee on your next open.
Common
38%
Uncommon
40%
Rare
20%
Epic
2%
Odds update as the pool changes. EV is a pack average, not a promise on one open.
After you open
You get a real item title while we custody the physical slab. Then pick one path on the decision desk:
- Vault — keep it in your collection.
- Sell back — take the timed buyback offer.
- List — put it on the marketplace.
Redeem / ship is available from your collection when you want the physical card.

BGS 10
SS4 Limit Breaker Vegito
Reference $21.80
Sell back
$18.53
Offer ends27:42
Sell back
For a short window after the pull (typically 30 minutes), we offer a buyback at a fixed share of the current reference value (typically 85%). Parameters can change — always trust the offer shown on screen.
Miss the window and you can still vault or list. Taking sell-back returns the item toward inventory / the pool.
Multi-pull
Open up to 5 capsules in one go. Reveals play out in sequence from the same pool without replacement. If stock runs out mid-bundle, completed opens stand and unused payment is refunded in USDnr.
Vault & collection
Vaulting
Vaulted means you own the item title and we hold the physical card. Browse your items under Collection. Status chips show vaulted, listed, auction escrow, redeeming, and similar states.
Vaulting is not shipping. The card stays secured until you redeem or sell.
Redeem & ship
Request redemption from an eligible vaulted item. We pack and ship; the item is burned when the carrier takes the parcel. Shipping is billed in USDnr (flat tiers by region / weight / value). Optional insurance is available; duties on international shipments are typically DDU (you pay import charges).
Marketplace
Browse & buy
Market lists fixed-price asks on vaulted items. Filter by set, grade, price, and more. Open a listing to buy now or make an offer. Settlement is in USDnr.

SS4 Limit Breaker Vegito
BGS 10 · Fusion World
List an item
From a vaulted item, set an ask (or start an auction). While listed or in auction escrow, conflicting actions like redeem or buyback are blocked until the listing settles or cancels.
Fees
Sellers pay a platform fee on successful sales (default 2%, configurable). Buyers pay the ask / winning bid. Capsule opens have no separate platform fee beyond the capsule price.
Auctions
How auctions work
English auctions: highest bid wins when time ends. Lots can be one item or a small bundle (all-or-nothing). Items sit in escrow for the duration. See Auctions.
Current bid
$42.00
Ends in
0:04:18
Min next bid $43.00 · 6 bids
Late bids can extend the timer (anti-snipe). Your USDnr is escrowed while you lead.
Bidding
Place a bid above the minimum increment. Your USDnr is escrowed while you lead; prior leaders are refunded when outbid. Bids near the end can extend the timer (anti-snipe, typically a few minutes). Sign-in is required to bid.
Account
Wallet
Your operational wallet is the Privy embedded address. Use it for balance, deposits, and withdrawals. You can also link external wallets for sign-in.
Deposit & withdraw
- Deposit — send USDnr to your address (QR / copy), or use the USDC conversion flow when offered.
- Withdraw — enter destination + amount and confirm. No step-up MFA for withdrawals at launch; double-check the address.
If USDnr depegs meaningfully, buys and buybacks may pause until the peg recovers.
Profile & settings
Update username, avatar, language preference, security (MFA), and saved market filters in Settings. Activity history covers pulls, sales, deposits, and more.
Fairness
Commit–reveal
Before you open, the server commits to a hidden seed. After open, that seed is mixed with your wallet entropy and a future block hash. The mix picks specific items from the published pool snapshot — not a free-form RNG.
Verify a pull
Anyone can re-run the checks on Verify with a pull ID. Capsule detail also links to the published commitment inspector.
Checks out
- ✓ Locked seed · ✓ Mix · ✓ Pick
- Pull 0192…a4f1 · 128 cards in pool at resolve
1 · The lock
Fingerprint on-chain matched the revealed secret.
3 · The pick
Rolled index 42 of 128 → Son Goku - FB01-001 (PSA 10).
Referrals
Invite friends
Share your invite link from Referrals. Collectors who join with it get a $5 capsule credit after their first paid open — not at signup. After they hit $50 net capsule volume, you each get another $5 credit. Referrals never change odds or EV.
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