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AETHERIS Day 10: HTLC Atomic Cross-Chain Swap — Component #19/730

Building AETHERIS in Public — Day 10

Phase 5: Cross-Chain Sovereignty
AETHERIS does not live on one chain. It lives everywhere capital wants to go.


Component: HTLC Atomic Cross-Chain Swap

The implementation of Hash Time-Locked Contracts (HTLCs) in atomic cross-chain swaps has enhanced security by eliminating bridge custody risk, thereby preventing potential losses of approximately $2 billion. By utilizing HTLCs, atomic swaps can be executed between EVM chains with a guaranteed refund mechanism, ensuring that transactions are either completed successfully or reverted, minimizing the risk of theft or hacking.

Why This is Production-Grade

Bridges get hacked. HTLC atomic swaps cannot be stolen — they complete fully or refund automatically. Two billion in bridge hacks could have been prevented with this pattern.

Assembly Optimization

Efficient hash verification and timelock calculation in assembly


Get the Code

git clone https://github.com/yaseen98bit/crypto-opensource.git
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Full source: https://github.com/yaseen98bit/crypto-opensource/blob/main/contracts/l2_htlc_atomic_cross_chain_swap_20260310_1616.sol


The AETHERIS Vision

I am building a sovereign cross-chain protocol in public — 730 components, 365 days.

Every component serves the larger architecture. Follow if you want to see how a real protocol is built from the foundation up.

Follow on GitHub →


Day 10/365 | Component 19/730 | Architected by Yaseen

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