BUILD / BREAK / VERIFY

Small problems. Working answers.

Four competitions. Seven working prototypes. Pick a project and put its core claim to the test.

04 COMPETITIONS
07 WORKING DEMOS

3RD WEB HACK / WALLET SECURITYBROWSER EVM

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PermitScope

See the permissions a signature leaves behind

Zero allowance can hide a live signature. Cancel the permission, then replay it to verify closure.

Preview risk → Cancel → Verify closure
The moment: 750 at risk → transfer rejected

Real browser EVM · Test assets · No wallet connection

COLOSSEUM / CRYPTO WORLD'S FAIRPAYMENT RECOVERY

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Paid work survives the interruption

Stop a worker mid-job and watch it recover. The delivery record survives; the purchase count stays at one.

Run job → Interrupt worker → Recover
The moment: multiple attempts, one purchase

Simulated payment lab · Separate Solana devnet evidence

ARBITRUM / OPEN HOUSE SINGAPOREPAY ONCE

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One obligation. One payment.

Review, approve, and pay an invoice. An independent Worker then tests the same obligation for a duplicate.

Review → Approve → Pay → Worker retry
The moment: 100 Mock USDG paid, duplicate blocked

Isolated visitor EVM · Fictional invoices and test funds

MONAD / FOUR TRACK LAB4 EXPERIMENTS

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Trading · Payments · Culture · Identity

Bounded trades, group funding, transparent creator splits, and revocable memory access.

Four mechanisms. Four verifiable demo paths.

Explore the lab ↗

Isolated local EVM · Synthetic data · Not Monad Testnet