Checking market

Signal access,
transferred carefully.

A small, guarded marketplace for user-submitted recovery credentials. Fixed-price settlement on Base, delayed seller payout, and a buyer-specific delivery envelope.

Plain-language warning: credentials are format-checked only. Account ownership, access, and transferability are not independently verified.

FIXED $5 PRICE BUYER-SCOPED ENCRYPTION ONCHAIN PAYMENT PROOF DELAYED PAYOUT FORMAT CHECKED
01

THE EXCHANGE

One price. Clear stages.

BUY01 — 04

Reserve an account

Connect a wallet, reserve one available listing, and pay exactly 5 USDC before the ten-minute timer expires.

  1. 01
    Sign inProve wallet control. No gas.
  2. 02
    ReserveOne listing held for 10 minutes.
  3. 03
    Pay on BaseOne exact native USDC transfer.
  4. 04
    Reveal & acknowledgeDelivery data is destroyed after receipt.
SELL01 — 03

Submit credentials

Credentials are encrypted immediately. An admin can see listing metadata, never credential plaintext.

02

DELIVERY DESIGN

Secrets move once.

Encrypted on arrival

Submitted credentials are encrypted with AES-GCM and a listing-specific key derived with HKDF.

Re-keyed before reveal

After finalized payment, the listing copy is re-encrypted for that buyer and order, then removed atomically.

Short delivery window

The buyer gets 24 hours to reveal and acknowledge. Acknowledgement destroys the delivery copy immediately.

Signal key boundary

The site cannot rotate Signal’s Account Entropy Pool. It states that limit anywhere rotation is discussed.

DELIVERY / ONE-TIME VIEW

Save these credentials now.

The encrypted delivery copy will be destroyed when you acknowledge receipt or the window closes.