Ledger LandISSUE #75 of 90

bridges · lock-mint · burn-mint · liquidity pools

BlockyVSDouble-Spend Dan

Blocky saysBridges move assets between chains via lock-mint, burn-mint, or liquidity-pool models.

Chains can't natively see each other, so bridges connect them. Lock-and-mint: lock the asset on chain A, mint a wrapped version on chain B. Burn-and-mint: burn on A, mint on B. Liquidity-pool bridges swap from a pool on each side. Each holds or controls real value during transit, which is exactly why bridges are the most-attacked part of crypto.

Power-ups you unlock

Lock-mint, burn-mint, or liquidity-pool models
Wrapped assets represent the locked original
Bridges hold/control value in transit
The most-attacked surface in crypto

Double-Spend Dan attacks — common mistakes

Assuming bridged (wrapped) assets are risk-free
Trusting a bridge without understanding its model
Bridging large sums through unaudited bridges

Boss battleDescribe the lock-and-mint flow across two chains.

Example code

<!doctype html><html><head><meta charset="utf-8"></head>
<body style="background:#06040d;color:#e6e0ff;font-family:monospace;padding:20px"><pre>lock 1 ETH on chain A → mint 1 wETH on chain B
burn wETH on B → unlock ETH on A</pre></body></html>

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