Questions tagged [bridge]

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Bridge of tokens to L2?

I am developing erc20 tokens and Dapps. If we can issue tokens to ethereum and when they are moved (e.g. when we move tokens according to Dapps rules) we can use polygonZkEVM or optimism with high ...
tjtr's user avatar
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Bridging ERC-20 Tokens to SPL Tokens with Tax Features Using Wormhole or Similar Platforms

I'm exploring the possibility of bridging ERC-20 tokens to a similar contract on the Solana blockchain using Wormhole or a comparable platform. My primary concern is the retention of specific token ...
RookLifting's user avatar
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Bridging ethers without private keys

According to Optimism SDK guide we should provide the Ethereum private key to generate an account on Optimism. If we were to apply this method to an crypto exchange that its wallet service is ...
Alireza's user avatar
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100% beginner : i need to burn tokens from BSC and check that they have been burnt, with a script (js) => how to?

You need to know : i have never touched solididty / eth ! I work for a company that has a token on the BSC. We would like to bridge this token to Solana by burning the token on the BSC and airdroping ...
Effe2's user avatar
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SafeERC20: low-level call failed safeTransferFrom

I`m developing a token bridge based on the omnibridge contracts here https://github.com/omni/omnibridge https://github.com/omni/tokenbridge When calling relayTokens from my dapp Im getting JSON RPC ...
koukotsu's user avatar
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Suitable bridge projects for new EVM chain

I am working on developing a bridge between my custom EVM chain and other chains such as Ethereum and BSC. Is anyone aware of any suitable existing projects on git hub that I can base my project on? I ...
koukotsu's user avatar
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What is the correct syntax for a tuple argument?

I am trying to interact with a bridge but I am stuck at correctly inputting the argument. The bridge in question is the ETH-RSK (ROOTSTOCK) Tokenbridge. They way the bridge works is, you call the ...
amateur9494's user avatar
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Are ethereum and polygon ENS synced?

I want to buy myself an ENS domain, but i don't want to pay the gas fees on eth. I know that ENS is integrated on both blockchains but I can't find info if they are synced in any way. If I buy the ...
Josif Hamed's user avatar
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173 views

Is it possible to transfer USDC from Fantom Opera network to BEP-20 network?

I have tried couple of bridging websites like Anyswap, Spookyswap but it failed badly. My coins are stuck in Fantom network. I want to switch them to other network, any suggestion?
TNX LABS's user avatar
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How does the cross-chain protocol handle rollback cases?

When bridging assets from a source chain to a destination chain using a cross chain protocol (e.g. Circle's CCTP, li.fi's cross swap), what happens if I successfully transferFrom() and burn() (or lock(...
Harriger's user avatar
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Any publication recommendation for Bridge security?

I am looking for any publications dealing with bridge security or vulnerability. Any recommendations are welcomed :) I have a few, but I am gathering more recommendations
Wonjae Choi's user avatar
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I met difficulties: web3. Exceptions. Web3ValidationError:

When I use web3.py to write a piece of code to bridge ETH from zks to op chain, I keep getting a 'deposit' method error. I have used the API from the Across project and written the code in the web3....
黑大帅's user avatar
1 vote
1 answer
297 views

ETH pending transaction (>4 days)

I have a transaction pending on ETH which is bridging ETH to Linea Mainnet. I accidentally set my "advanced" to both Base and Priority to 10. Which now causing my transaction stuck more than ...
Brian Har's user avatar
1 vote
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68 views

Chainlink Oracle to call API

I have quite some question regarding Chainlink call API. I made an API and trying to call it from my Chainlink through smart contract. As I linked my API to bridge in Chainlink Operator UI, I try to ...
xopherwwl's user avatar
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Can I bridge if don't have any ETH?

I have a metamask wallet. I have 25.8 USDC that I want to bridge from optimism to polygon or ethereum mainet but I dont have any ETH, nor on the polygon, optimism or mainet wallet. Is this possible or ...
Juan Diego Rosas's user avatar
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As of 2023 June, what is the best method to swap USDC from Arbitrum to Polygon with the least slippage

It's June 2023, what is the most cost effective way to swap USDC from Arbitrum to Polygon?
Patoshi パトシ's user avatar
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Ethereum Bridges , Layer-2 , Sidechain ,Offchain ,Crosschain Interoperability

I'm confused with all these terms Bridges , Layer-2 , Sidechain ,Offchain ,Crosschain Interoperability .Are these the scaling solutions for Ethereum ?
Surajkumarrr's user avatar
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How to bridge ERC-20 EFI tokens to Efinity parachain address using Enjin wallet?

I have been holding some EFI tokens in my Ethereum wallet and would like to transfer them to my Efinity parachain address. I am using the Enjin wallet on my Android device and was wondering if there ...
stefannebesnak's user avatar
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113 views

How to transfer coins between L1 and L2 via web3.js or ethers.js?

How to do it? Programmatically. Does it always require a bridge? Or can it be done in other way too? I haven't found any difinitive answer to this anywhere.
Nondi's user avatar
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1 answer
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How does one create and send TXs on L2 - Arbitrum and others?

In ethers.js or web3.js How does one create and send TXs on L2 - Arbitrum and others? Is the algorithm absolutely identical to the one on L1, or not? How does one transfer ETH between L1 and L2?
Kyell's user avatar
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how to estimate the gas price while performing bridge using Axelar network?

I am using the Axelar network to transfer tokens from chain A to chain B I am using the function callContractWithToken in the Axelar network I need to figure out the gas fee which I should send to the ...
Badrik Patel's user avatar
2 votes
1 answer
169 views

Have any a16z-backed protocols ever been hacked?

This year, we saw the hack by exploit of a Binance bridge and a Ronin bridge due to weak code written by the protocol creators. a16z Crypto is the most influential DeFi protocol investor in web3, ...
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How to write a bridge [duplicate]

I'm thinking about writing an bridge between 2 blockchain, one of them is EVM and the another one is not. How i can do that?? i think i need a lot of liquidity in 2 side of bridge and when user ...
Alireza's user avatar
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289 views

How do layer-2 bridges and protocols earn revenue?

Everytime I've used a bridge like Polygon and Aztec, all they charge are gas fee transactions to make the transfers and lock-up conversions between layer 1 and layer 2. Bridges therefore are nothing ...
user610620's user avatar
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Is the code for the Polygon bridge open-source somewhere?

Does Github store the Solidity code for the Polygon bridge? I can't find the official bridge code anywhere.
user610620's user avatar
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3 answers
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Why would an upgradeable smart contract or bridge not be preferred?

A hackathon shows preference towards a bridge smart contract that is not upgradeable. Why would developers view this as an advantage when building a protocol or dapp? Wouldn't it sound better to say ...
user610620's user avatar
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EVM Bridge Claim Error: 32000

I am working on EVM bridge from between a foreign and local chain. Depositing tokens to the bridge contract works so fine, but claiming the token on the native chain returns error: Gas estimation ...
PerfDev.'s user avatar
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"execution reverted: ERC20: call failed"

I try to call the swap function in X bridge but it is not working mysteriously. so contract X (which is the bridge) is calling a handler inside internally and the transfer method is happening there. I ...
Helia Marami's user avatar
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1 answer
179 views

is solana benifiting with solana virtual machine

What is the meaning for a blockchain of not having evm or vm compatibility? What benefits solana will get of now having svm?
maztt's user avatar
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Are fully decentralized, trustless bridges possible between two separate blockchains?

I have done some research but I couldn't find a conclusive answer for this. I want to build a bridge between two Ethereum test nets as a proof of concept and initially thought it would be possible to ...
dhsdshdhk's user avatar
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Can I make a bridge without liquidity?

I started developing what it meant to be a bridge to learn and settle down my Solidity knowledge. I thought it could be done by one person and from what I understood I just needed smart contracts to ...
Javier Guzmán's user avatar
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Can you make one transaction on mainnet that initiates a transaction on a layer 2?

I was going through some grants/RFPs and I noticed an interesting request. They are looking for a solution that allows a user to make a single transaction on mainnet to deposit funds into a protocol ...
soyboy's user avatar
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1 answer
157 views

How to get balance from a chain different than the one currently connected?

I am building a small bridge in order to learn about web3 and I would like to show the balance from the destination chain/network. For example, if I want to pass Ethereum from Ethereum mainnet to ...
Javier Guzmán's user avatar
1 vote
0 answers
39 views

Will dynamic metadata persist for bridged assets transfered between Ethereum and Polygon?

Im exploring how I can use polygon for my existing eth nft 721 contracts. From what I can gather once Eth contract is mapped to polygon you can then bridge your assets over. This seems simple. I know ...
Potion's user avatar
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4 votes
1 answer
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Polygon mainnet has two official ERC20 Link token contract. Which one DEXs use when on polygon mainnet

I was going through the top erc20 token by marketcap on polygonscan. There I have found these two LINK tokens: https://polygonscan.com/token/0x53e0bca35ec356bd5dddfebbd1fc0fd03fabad39 ~ from polygon ...
Rishabh Raghwendra's user avatar
2 votes
1 answer
175 views

What does it mean to "send a contract calldata"?

While reading this blog about Connext.Network, I encountered with the following sentence: Connext is an interoperability protocol that allows users to send fast, fully non-custodial transfers or ...
Stav Alfi's user avatar
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How can i retrieve the list of ERC20 tokens bridged to other evm chains?

Is there is a way (preferably not relying on an external API) to retrieve a list of tokens bridged to L2 or other EVM chains corresponding to a token on the Ethereum mainnet. I thought of parsing ...
David Van Isacker's user avatar
1 vote
1 answer
149 views

how long takes to pass erc20 token to another chain in stargate

How long takes to pass erc20 token to another chain in stargate on mainnet. example: 1 usdt from bsc to fantom(how long takes to start transaction on destination chain?)
0xbeny's user avatar
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1 answer
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How exactly does minting of token in bridges work?

I know what bridges are and the problem they solve. The only problem now is I am trying to wrap my head around how they actually do what they do. I found an answer similar to this question here, where ...
Finlay Weber's user avatar
1 vote
1 answer
225 views

Native token Bridge to swap another native token

I have a smart contract on the BSC network that I want to accept other tokens like AVAX, MATIC, ETH, and other EVM compatible tokens. How would one go about letting a user use AVAX but at the end it ...
Scott Deutsch's user avatar
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1 answer
68 views

Sending message/instruction from a governance system on Arbitrum to mint tokens on mainnet using Gnosis Zodiac Bridge

I am working with a DAO that has their governance/voting system on Arbitrum, and their Gnosis Safe treasury wallet on mainnet. The Gnosis Safe on mainnet contains minting keys to mint their native ...
Yuval's user avatar
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1 vote
0 answers
293 views

How long it takes for a smart contract to be mapped by Polygon Token Mapper?

So, I've created my smart contracts (ERC-1155 with transparent upgradable proxy) both for ethereum and polygon, deployed and verified. Then I use the mapper tool of Polygon for mapping(?). I've been ...
MehmedB's user avatar
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1 answer
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How can a token have the same contract address on ERC20 and BEP20

I'm getting into a bit of web3 dev, and I'm having trouble getting a handle on how contracts can be interchangeable between networks. Some tokens create a 'wrapped' version, that is tethered in price ...
silencedogood's user avatar
1 vote
0 answers
74 views

Multichain token: Claim erc20 on L2 requiring balance of erc721 on Mainnet

So, I'm working on an NFT project on mainnet and we want it to have its own currency on L2 so its actually a frictionless currency. We are looking into Arbitrum and Polygon. I've noticed that first ...
Lucas Vinzon's user avatar
2 votes
1 answer
72 views

How can I determine if a bridge site is legit?

I have seen online tutorials recommend Hop and Polygon bridges for transferring ETH from Polygon network to mainnet. Recently I came across the relatively new Umbria Narni bridge which claims much ...
qwr's user avatar
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1 vote
1 answer
243 views

How to deploy ERC-20 token on Aurora and bridge it to Ethereum Mainnet?

Can I deploy ERC-20 token on Aurora and bridge it to ETH Mainnet ERC-20 contract? We plan to launch our token as Aurora native ERC-20, but we’ll need to bridge it to Ethereum and NEAR Protocol. Would ...
Masha's user avatar
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1 answer
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Is it possible to upgrade the NFTs to Ethereum Mainnet using Aurora’s Rainbow Bridge? [closed]

For instance, we want to build our Marketplace on the NEAR chain. In Ethereum we can achieve this by an arbitrary Message Bridge (AMB) to relay data between two EVM-based chains. With a classic NFT ...
Masha's user avatar
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1 answer
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Is it possible to map custom smart contracts to Ethereum?

We need snapshots (Snapshots allow to lock user's balances to prevent multiple votes with same tokens https://docs.openzeppelin.com/contracts/3.x/api/token/erc20#ERC20Snapshot) in the token smart ...
Yaroslav's user avatar
2 votes
1 answer
500 views

3 questions about bridging tokens between Polygon and Ethereum

I have an ERC721 token deployed on Polygon that I want to bridge into Ethereum. I'm having a hard time figuring out how bridges and layer 2 work, so I have a few questions about this workflow. 1 - I ...
sigmaxf's user avatar
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