01Add-on: bridge
Create a cross-chain bridge. Take your coin where people are.
Move your coin between your chain and Ethereum, BNB Chain or Cosmos. Your own validators sign every transfer on your own nodes, with transfer caps and an emergency pause switch built in.
- $999 one-time
- Caps and a pause switch
- Validators on your nodes
Bridge
example dataAurora
lock 100 AUR
Ethereum
mint 100 wAUR
- Locked on Aurora
- Your validators signing
- Minted on Ethereum
Daily cap used
02Why it matters
Do you need a bridge yet?
Often not on day one. Here is the honest test, and why it matters when the answer turns to yes.
Three questions first
- 1Is there liquidity for your coin on the other chain?Without it, a bridge moves coins between two empty markets.
- 2Do holders ask to use your coin on Ethereum, BNB Chain or Cosmos?Demand first, bridge second.
- 3Will you watch it and set sensible caps?A bridge is infrastructure you keep an eye on.
Three yeses? A bridge opens your coin to the people and markets on a bigger chain.
Reach bigger chains
Holders can use your coin on Ethereum, BNB Chain or Cosmos.
Feed your swap
Bring outside tokens in and give your pools depth.
Limits from day one
Caps and a pause switch are part of the add-on.
03How it works
How to create a cross-chain bridge you can explain in one picture.
Coins never really travel. They are locked on one side and matched on the other.
Going out: lock and mint
100 AUR is locked on your chain. Your validators sign. 100 wAUR is minted on the other chain.
Coming back: burn and unlock
100 wAUR is burned on the other chain. Your validators sign. 100 AUR is unlocked at home.
The rule that keeps it honest
Wrapped supply always equals locked supply. Only the bridge can mint or burn.
Wrapped coins (wAUR) are claims on coins locked at home. They are only as good as the lock.
If anyone could mint without a matching lock, the wrapped coin would be worth less than it says.
Your validators run on your own nodes, so you decide who signs.
04Know the field
Why bridges fail, and what limits really do.
Bridges hold a pile of locked coins, which makes them targets. The failures are well documented.
Ronin
- Date
- 2022-03-23
- Loss
- About $624M
- What failed
- Attackers controlled 5 of the 9 validator keys needed to sign. Noticed six days later.
Wormhole
- Date
- 2022-02-02
- Loss
- About $326M
- What failed
- A signature check was bypassed, so coins were minted with no lock behind them.
Nomad
- Date
- 2022-08-01
- Loss
- Over $190M
- What failed
- An upgrade made any message look valid. Hundreds of copycats followed.
All bridge hacks, 2022
- Date
- to 2022-08-02
- Loss
- About $2B
- What failed
- 13 incidents, 69 percent of all crypto stolen in 2022 up to then (Chainalysis).
Amounts are in US dollars at the time of each attack and vary with token prices.
Sources: Halborn on the Ronin hack, checked October 2026; Halborn on the Wormhole hack, checked October 2026; Halborn on the Nomad hack, checked October 2026; Chainalysis on 2022 bridge hacks, checked October 2026
What caps and a pause would and would not stop
Ronin, keys taken
Caps would have limited how much left per day. Only a pause, if someone noticed, stops it.
Wormhole, check bypassed
Caps limit the size of each bad mint. They do not fix the bug.
Nomad, bad upgrade
A pause stops the copycats once someone sees it. Test every upgrade first.
Trust models, plainly
Trusted
- Who verifies
- External verifiers: a validator set, multisig or oracle network
- Here
- Yours: your validators, on your nodes
Trustless
- Who verifies
- The connected chains verify each other
- Here
- No new trust, more engineering
Model names from ethereum.org's bridge docs.
Source: ethereum.org bridge docs, checked October 2026
05What you get
A bridge with your hands on the controls.
Three controls matter most on any bridge. All three are in the add-on.
Your controls
You decide who signs and how much moves.
Validators run on your own nodes. Caps limit what can move. The pause switch stops everything if something looks wrong.
Validators
on your own nodes
Transfer caps
industry-standard limits
Pause switch
for emergencies
Three destinations
Ethereum, BNB Chain or Cosmos.
Hosted and kept online
The bridge service stays online on its own server.
Smart-contract bases
Ethereum, BNB Chain, Cosmos and Avalanche L1 bases.
Your keys, your nodes
Validator keys live on your nodes, never with us.
Now or later
Add it when holders ask for it.
06Price
A bridge for $999, not a six-figure project.
Custom bridges are quoted as months of agency work. This one is an add-on.
Bridge
$999
one-time
Hosting after launch
One more server: $9 a month on Ethereum, BNB Chain and Avalanche L1 bases, $19 on Cosmos.
RocketRPC bridge
$999
one-time, caps and pause included
Custom bridge build
EUR 100k+
3 to 6 months, as published by Wavect
- Gas for transfers on both chains
- Liquidity on the other side
- An independent audit, if you raise caps
- Your time watching it
Wavect's quote (from about EUR 100,000) excludes the same items.
Source: Wavect on cross-chain bridge development, checked October 2026
07Clear lines
What no bridge can promise, and what is not included.
No bridge is risk-free. Saying so plainly is part of running one.
Good to know
- Caps limit how much can be lost. They do not stop an exploit.
- A pause switch only helps if someone notices. Ronin went unnoticed for six days.
- Whoever holds enough validator keys can sign. Keep your validators on separate, well-guarded nodes.
- Bitcoin-style, Tron and Solana bases have no bridge add-on.
Not included
- A security audit
- Liquidity on the destination chain
- Gas or relayer funding
- Listing the wrapped coin on a DEX or tracker
- Insurance
- Legal advice
08Works well with
Add-ons that pair with your bridge.
Bridged coins need a market, a public record and a place to live.
09Questions
Bridge questions
Real questions people ask before they connect two chains.
How do bridges work?
This one uses lock and mint. Coins are locked on your chain, your validators sign, and the same amount is minted on the other chain. The way back burns the wrapped coins and unlocks the originals.
Can you explain the process of transferring an asset from one chain to another using a bridge?
You send coins to the bridge on your chain, where they are locked. Your validators confirm the lock and sign. The bridge mints the same amount of wrapped coins to your address on the other chain.
Can you explain the difference between a cross-chain bridge and an atomic swap?
An atomic swap is a direct trade between two people on two chains, with no wrapped coins. A bridge locks coins on one chain and issues matching wrapped coins on another.
How do cross-chain bridges achieve blockchain compatibility?
They do not merge chains. Each side runs its own contract, and validators carry signed messages between them so both sides agree on what was locked and what was minted.
What is the biggest security risk in a bridge?
The keys or checks that approve a mint. The largest bridge losses came from stolen validator keys, a bypassed signature check and a bad upgrade.
Do you get bridges audited?
No audit is included. Before you raise the caps or move serious value, get an independent audit.
Who runs the bridge validators?
You do, on your own nodes. You decide who signs.
What do the transfer caps and pause switch do?
Caps limit how much can move in a window, so a mistake or exploit is smaller. The pause switch stops all transfers until you turn it back on.
Which chains can my coin bridge to?
Ethereum, BNB Chain or Cosmos, from an Ethereum, BNB Chain, Cosmos or Avalanche L1 base.
Do I need a bridge at launch?
Usually not. Add one when there is liquidity on the other side and holders asking for it. You can add it from your dashboard any time.
Open your coin to bigger chains.
A bridge with your validators, caps and a pause switch, $999 one-time.