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FORUM

DEX crosschain

Created on 29th June 2025

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F

FORUM

DEX crosschain

The problem FORUM solves

The Problems FORUM Solves—and How It Makes Your Life Easier & Safer

1. Fragmented Liquidity Across Chains

  • Pain Point: Liquidity is siloed on each blockchain, so users chase rates manually across multiple bridges and DEXes.
  • FORUM Fix: One unified order-routing engine taps pools on Solana, Ethereum, Avalanche, BNB, Polygon, etc., finding the best price in a single trade. No more hopping between apps.

2. Complex Multi-Chain UX

  • Pain Point: Switching wallets, networks, bridges, and token standards for each new chain—confusing and error-prone.
  • FORUM Fix: Single interface + CCIP under the hood. Connect your wallet once, choose source & destination chains, and trade—no manual bridging, no extra approvals.

3. Bridge-Related Security Risks

  • Pain Point: Many bridges are custodial or rely on a small set of validators—big targets for hacks and rug pulls.
  • FORUM Fix: Leverages Chainlink CCIP’s trust-minimized, fraud-proof messaging network. Funds are locked on the source chain, relayed by permissionless CCIP nodes, and minted on the target—no single point of failure.

4. Slippage & Latency

  • Pain Point: Manually stitching multiple transactions inflates gas fees and slippage, especially when moving assets across chains.
  • FORUM Fix: Atomic cross-chain swaps and multi-hop routing in one CCIP message. You get end-to-end settlement in one ticket, reducing both slippage and overall gas costs.

5. Gas-Token Fragmentation

  • Pain Point: Need to hold native gas tokens (ETH, BNB, AVAX, MATIC…) on each chain to transact.
  • FORUM Fix: Pay gas in any asset you’re moving. FORUM auto-swaps a small fee portion into the destination chain’s native token just in time for settlement.

Key B2B & DAO Infrastructure Use Cases

Use CaseProblemFORUM SolutionRevenue Model
Cross-Chain PayrollDAOs & companies struggle to pay employees across different chainsSchedule salaries in one dashboard—CCIP routes payments to each employee’s preferred chain & wallet.SaaS subscriptions + transaction fees
Cross-Chain InvoicingB2B customers demand to pay in their favorite blockchain/tokensIssue invoices denominated in any asset; FORUM collects and disburses across chains automatically.Payment processing fees + SaaS fees
Multi-Chain Treasury OpsFragmented treasury management, complex fund allocation across chainsConsolidate treasury movements via FORUM: rebalancing, vesting, and yield-harvesting anywhere.Consulting + premium features
DAO Governance BridgeVoting tokens locked to one chain can’t count elsewhereFORUM bridges governance tokens trustlessly so a DAO can snapshot & tally votes across multiple networksIntegration fees + governance tokens

How You Benefit

  • One-Click Cross-Chain Trades
    Eliminate manual bridging, approvals, and network toggles.

  • Built-In Security
    Chainlink CCIP’s off-chain relayer mesh with on-chain fraud-proofs keeps your funds safe.

  • Cost & Time Savings
    Atomic routing slashes gas overhead and reduces trade execution time.

  • Scalable B2B Tools
    Payroll & invoicing modules plug into any corporate or DAO workflow—no bespoke bridge development needed.

  • Full Transparency & Analytics
    Real-time dashboards show you volumes, fees, and latency metrics across every chain.


Kickstart your FORUM integration today—ditch the siloed bridges, consolidate your liquidity, and bring enterprise-grade cross-chain payments to your users or team.

Challenges I ran into

Here are a few of the stickiest bugs and hurdles we hit while building FORUM, and exactly how we untangled them:


1. Out-of-Order Relayer Messages

The Bug:
Our CCIP relayer network occasionally delivered messages in the wrong order—so a “mint LP token” call would land before the corresponding “lock assets” event. Trades silently failed, leaving user funds in limbo.

How We Solved It:

  • Added a monotonically increasing sequenceId to every CCIP payload.
  • On the FORUM DEX contract, we reject any message whose sequenceId ≤ last processed.
  • Built an idempotent dispatcher pattern so replayed or delayed messages simply revert without side-effects.

2. Cross-Chain Gas & Fee Abstractions

The Hurdle:
Users wanted to pay Ethereum gas fees using SOL or BNB tokens when bridging in. Naively swapping on-chain caused high slippage and occasional out-of-gas errors.

How We Overcame It:

  • Introduced a “fee escrow” module: users pre-deposit a small amount of native gas token on each destination chain.
  • Built an internal DEX router (via Chainlink Functions) to auto-rebalance gas pools off-peak, minimizing slippage.
  • Fallback: if gas pool dips too low, we pull from a communal “FORUM treasury” to top it up, then auto-reimburse.

3. Token-Standard & Decimal Mismatches

The Bug:
We bridged an SPL token (6 decimals) into an ERC-20 (18 decimals) but forgot to adjust the conversion factor—users saw 0.000001 USDC or 1,000,000 USDC.

How We Fixed It:

  • Created a unified AssetAdapter library that:
    1. Reads on-chain decimals() (or config map for non-EVM).
    2. Normalizes all amounts to a 10⁸-precision intermediate before final mint/burn.
  • Wrote exhaustive unit tests across every supported chain’s testnet token to catch regressions.

4. Solana ↔ EVM Address Canonicalization

The Hurdle:
Solana’s Base58 addresses and EVM’s hex addresses don’t map one-to-one. Our first attempt simply hex-decoded the Solana key, which collided for some vanity addresses.

How We Overcame It:

  • Deployed a tiny on-chain AddressRegistry on each chain that stores a Solana→EVM mapping.
  • In the “lock” step on Solana, we require users to register their EVM address. That mapping gets bundled in the CCIP payload.
  • The destination contract verifies the mapping via a Merkle-proof against the on-chain registry before minting.

5. Front-End Wallet & Chain-Switch UX

The Bug:
Switching nets (e.g. from Phantom to MetaMask) mid-workflow dropped our React state. Users would click “bridge” twice, end up with duplicate orders or stuck in “awaiting signature.”

How We Fixed It:

  • Introduced a global ConnectionManager component that:
    1. Detects provider changes.
    2. Gracefully tears down and re-initializes CCIP listeners.
    3. Persists pending order metadata in localStorage so workflows can resume after a wallet swap.
  • Added a “Confirm network” modal before any cross-chain action, so users know exactly which wallet & chain they’re transacting on.

Each of these refinements took us from an intermittent, hard-to-debug “ghost” behavior to a rock-solid, production-ready DEX experience. If you want code snippets or a deep dive into our testing harness, just let me know!

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