Paragraph

Paragraph

2025 Paragraph Technologies Inc

Popular Trending Privacy Terms Home

Search...Ctrl+K

N00b21337

N00b21337

Subscribe

Search...Ctrl+K

N00b21337

Subscribe

2025 Paragraph Technologies Inc

Popular Trending Privacy Terms Home

Previous
1
2
7
Next

Previous
1
2
7
Next

Subscribe

Subscribe

Currently Uniswap UI is broken for Sepolia and testnets so to use it locally or on some IPFS/Swarm solution you need to go to older version and make a build.git clone https://github.com/Uniswap/interface cd interface git fetch --all --tags git checkout tags/web/5.19.3 mkdir apps/web/src/utils/__generated__ # https://github.com/Uniswap/interface/issues/7631 # create .env.defaults file under project root. # https://github.com/Uniswap/interface/issues/7678 cat <<EOL > .env.defaults ALC...

Currently Uniswap UI is broken for Sepolia and testnets so to use it locally or on some IPFS/Swarm solution you need to go to older version and make a build.git clone https://github.com/Uniswap/interface cd interface git fetch --all --tags git checkout tags/web/5.19.3 mkdir apps/web/src/utils/__generated__ # https://github.com/Uniswap/interface/issues/7631 # create .env.defaults file under project root. # https://github.com/Uniswap/interface/issues/7678 cat <<EOL > .env.defaults ALC...

Most popular by N00b21337

Clear browser storage when developing

Example of implementation of EIP 4906 metadata updates

How to get Uniswap V3 liquidity pool address for whitelisting?

Transaction Bytecode vs Deployed Bytecode, differences and how to read them

Uniswap V3 initializing pools, adding liquidity and tools for calculations - Swiss knife post

Find a revert reason of transaction with ethers.js

Most popular by N00b21337

Clear browser storage when developing

Example of implementation of EIP 4906 metadata updates

How to get Uniswap V3 liquidity pool address for whitelisting?

Transaction Bytecode vs Deployed Bytecode, differences and how to read them

Uniswap V3 initializing pools, adding liquidity and tools for calculations - Swiss knife post

Find a revert reason of transaction with ethers.js

N00b21337

R4Nd0m k0lLEC7I0N 0F U5EFul PHindiN92 0N mY j0URney PhR0m n00b 2 1337. rAmBL1N92 aBoUt 5Ol1d17y, rE4C7, nf7, dEfi, WE83

N00b21337

R4Nd0m k0lLEC7I0N 0F U5EFul PHindiN92 0N mY j0URney PhR0m n00b 2 1337. rAmBL1N92 aBoUt 5Ol1d17y, rE4C7, nf7, dEfi, WE83

Query Ethereum Mempool Or any other EVM chain

Make a cURL request to the transaction pool/mempool of your node:curl --data '{"method":"txpool_content","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST https://go.getblock.io/58cfd1cf72204a4d9c25c6c81dea36b8 and you will get output with huge list of into scrolling by your eyes. To get some exact info, for example if some trx hash is in mempool use grep likecurl --data '{"method":"txpool_content","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: applicati...

Query Ethereum Mempool Or any other EVM chain

Make a cURL request to the transaction pool/mempool of your node:curl --data '{"method":"txpool_content","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST https://go.getblock.io/58cfd1cf72204a4d9c25c6c81dea36b8 and you will get output with huge list of into scrolling by your eyes. To get some exact info, for example if some trx hash is in mempool use grep likecurl --data '{"method":"txpool_content","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: applicati...

Post cover image

IPFS and Filecoin - how are they integrated

I was doing a deep dive to understand what is happening with IPFS and Filecoin and how Filecoin uses IPFS in reality.Saas and PinataThe usual method to use IPFS is to upload files data on some centralized service like PInata, where you pay some $240 a year for the lowest plan to store some 20k files at this point. What they actually do for you is provide IPFS pinning service as in they are running IPFS nodes and pinning your data while you provide payments. A similar service to Pinata is Ligh...

Post cover image

IPFS and Filecoin - how are they integrated

I was doing a deep dive to understand what is happening with IPFS and Filecoin and how Filecoin uses IPFS in reality.Saas and PinataThe usual method to use IPFS is to upload files data on some centralized service like PInata, where you pay some $240 a year for the lowest plan to store some 20k files at this point. What they actually do for you is provide IPFS pinning service as in they are running IPFS nodes and pinning your data while you provide payments. A similar service to Pinata is Ligh...

Hardhat TS/JS - network does not support ENS

I was getting this error on a custom cluster with the geth nodeError: network does not support ENS (operation="getResolver", network="unknown", code=UNSUPPORTED_OPERATION, version=providers/5.7.2) Although the code worked locally somehow ethers js was looking for an ENS remotely. You must convert the address passed from wherever you have it. Official docs ethers.io getAddress. conversion - ethers.utils.getAddress( address ) converts the string address to the address required for the smart con...

Hardhat TS/JS - network does not support ENS

I was getting this error on a custom cluster with the geth nodeError: network does not support ENS (operation="getResolver", network="unknown", code=UNSUPPORTED_OPERATION, version=providers/5.7.2) Although the code worked locally somehow ethers js was looking for an ENS remotely. You must convert the address passed from wherever you have it. Official docs ethers.io getAddress. conversion - ethers.utils.getAddress( address ) converts the string address to the address required for the smart con...

Post cover image

Wallet signing, eth_sign, and security

I am sure many of you had a similar experience when you were about to sign something online and you were not sure what you were signing and how secure it is. Many websites today ask you to sign a message when just logging in to dapp. Sometimes it shows you some message you are about to sign in clear format but sometimes it’s just some random hex values and you are not sure what you are signing. So I wondered how secure or insecure that is and what are we doing by signing some messages.Eth_sig...

Post cover image

Wallet signing, eth_sign, and security

I am sure many of you had a similar experience when you were about to sign something online and you were not sure what you were signing and how secure it is. Many websites today ask you to sign a message when just logging in to dapp. Sometimes it shows you some message you are about to sign in clear format but sometimes it’s just some random hex values and you are not sure what you are signing. So I wondered how secure or insecure that is and what are we doing by signing some messages.Eth_sig...

Post cover image

Thoughts on Inscriptions and their sustainability

As this topic is very familiar with what I do and I saw a lot of misinformation I have an urge to explain this a bit. Let's put this in proper context in the first place. One of the main reasons why inscriptions exist is a need to store some arbitrary data in a decentralized and immutable way, there are 3 methods to do thatDecentralized storage like IPFS, Arweave, Swarm This method was architected to be a complement to Blockchain and sufficient for that use case. It doesn't use bloc...

Post cover image

Thoughts on Inscriptions and their sustainability

As this topic is very familiar with what I do and I saw a lot of misinformation I have an urge to explain this a bit. Let's put this in proper context in the first place. One of the main reasons why inscriptions exist is a need to store some arbitrary data in a decentralized and immutable way, there are 3 methods to do thatDecentralized storage like IPFS, Arweave, Swarm This method was architected to be a complement to Blockchain and sufficient for that use case. It doesn't use bloc...

Gas cost of getting the whole struct vs getting struct single values

I wanted to know if it is worth it to make a lookup for the whole struct and parse info from it or to always get single values with getters from it to optimize. So the value of gas needed for most single lookup is around 2900 gas or less. But the value for the whole struct lookup is 9861 gas, which means that if the lookup is using less than 3 values it’s more worth it to do a single lookup for each value in a struct. This changes as the stuct is larger, if there are more values in it then it...

Gas cost of getting the whole struct vs getting struct single values

I wanted to know if it is worth it to make a lookup for the whole struct and parse info from it or to always get single values with getters from it to optimize. So the value of gas needed for most single lookup is around 2900 gas or less. But the value for the whole struct lookup is 9861 gas, which means that if the lookup is using less than 3 values it’s more worth it to do a single lookup for each value in a struct. This changes as the stuct is larger, if there are more values in it then it...

Post cover image

Uniswap V3 initializing pools, adding liquidity and tools for calculations - Swiss knife post

Warning, this post is only useful if you tried out adding liquidity both with UI and with code, read about V3 most of the info, and want to have more clearer idea of what is what. There are lots of books and posts about how to use Uniswap V3 and I will reference the best at the end of the article, yet some info and code on how to set proper values I didn’t find and had to dig out in various places. So let’s begin with some short snippets on how to get ticks and SqrtPriceX96 values depending o...

Post cover image

Uniswap V3 initializing pools, adding liquidity and tools for calculations - Swiss knife post

Warning, this post is only useful if you tried out adding liquidity both with UI and with code, read about V3 most of the info, and want to have more clearer idea of what is what. There are lots of books and posts about how to use Uniswap V3 and I will reference the best at the end of the article, yet some info and code on how to set proper values I didn’t find and had to dig out in various places. So let’s begin with some short snippets on how to get ticks and SqrtPriceX96 values depending o...

ERC20 - Difference between transfer and transferFrom

This is more a note to myself as to when is transfer used and when is transferFrom and that with transferFrom you need to have approval of token transfers and for just pure transfer its not needed.transfer function: This function allows a token holder to directly transfer their tokens to another address. It does not require any prior approval because the token holder is initiating the transfer of their own tokens. The syntax is generally like transfer(recipient, amount), where the sender is t...

ERC20 - Difference between transfer and transferFrom

This is more a note to myself as to when is transfer used and when is transferFrom and that with transferFrom you need to have approval of token transfers and for just pure transfer its not needed.transfer function: This function allows a token holder to directly transfer their tokens to another address. It does not require any prior approval because the token holder is initiating the transfer of their own tokens. The syntax is generally like transfer(recipient, amount), where the sender is t...

Post cover image

Curl-ing the blockchain with JSONRPC and creating transactions

Here are some quick snippets that help when you want to get info from Blockchain.This will query the blockchain endpoint on a given address and give a current number of transactions made by that address. Which will be nonce of the address. Remember that nonce always starts with 0curl https://go.getblock.io/58ccb1cf74404a4d9c25c6c81dea36b8 -X POST -H "Content-Type: application/json" --data '{"method":"eth_getTransactionCount","params":["0x14D580158D276bd2C3bBf02dC91276aFa19D2169", "latest"],"i...

Post cover image

Curl-ing the blockchain with JSONRPC and creating transactions

Here are some quick snippets that help when you want to get info from Blockchain.This will query the blockchain endpoint on a given address and give a current number of transactions made by that address. Which will be nonce of the address. Remember that nonce always starts with 0curl https://go.getblock.io/58ccb1cf74404a4d9c25c6c81dea36b8 -X POST -H "Content-Type: application/json" --data '{"method":"eth_getTransactionCount","params":["0x14D580158D276bd2C3bBf02dC91276aFa19D2169", "latest"],"i...

Post cover image

How to get Uniswap V3 liquidity pool address for whitelisting?

Similar to what we did for Uniswap V2 on how to find address of smart contract pool that will be generated we can do the same for V3 https://mirror.xyz/n00b21337.eth/0QkNt3NnLnnUSy4jFmWnaeRr_38Z3wlYKKf1O6URG3c Depending on what chain we are at, you can find all the addresses of Factories here https://github.com/Uniswap/sdk-core/blob/5365ae4cd021ab53b94b0879ec6ceb6ad3ebdce9/src/addresses.ts#L135 Aim for the v3CoreFactoryAddress values.**So there are a few methods to do that, one could be to us...

Post cover image

How to get Uniswap V3 liquidity pool address for whitelisting?

Similar to what we did for Uniswap V2 on how to find address of smart contract pool that will be generated we can do the same for V3 https://mirror.xyz/n00b21337.eth/0QkNt3NnLnnUSy4jFmWnaeRr_38Z3wlYKKf1O6URG3c Depending on what chain we are at, you can find all the addresses of Factories here https://github.com/Uniswap/sdk-core/blob/5365ae4cd021ab53b94b0879ec6ceb6ad3ebdce9/src/addresses.ts#L135 Aim for the v3CoreFactoryAddress values.**So there are a few methods to do that, one could be to us...

Deploying Smart Contracts with Identical Addresses Across Different Blockchains: An Insight into CREATE and CREATE2 Opcodes

Method 1: Deploying with CREATE OpcodeThe first method involves the use of the CREATE opcode. This approach, however, is non-deterministic - you cannot ascertain in advance which address the deployed smart contract will occupy. The address is derived using two main components: the address of the message sender (msg.sender) and the nonce, typically the count of transactions made. The calculation formula is:Address = bytes20(keccak256(senderAddress, nonce)) A practical example in Solidity would...

Deploying Smart Contracts with Identical Addresses Across Different Blockchains: An Insight into CREATE and CREATE2 Opcodes

Method 1: Deploying with CREATE OpcodeThe first method involves the use of the CREATE opcode. This approach, however, is non-deterministic - you cannot ascertain in advance which address the deployed smart contract will occupy. The address is derived using two main components: the address of the message sender (msg.sender) and the nonce, typically the count of transactions made. The calculation formula is:Address = bytes20(keccak256(senderAddress, nonce)) A practical example in Solidity would...

Post cover image

Gnosis safe troubleshooting

So you decided to use gnosis safe and its multisig for your smart contracts. Great decision if you moved from EOA and one private key to more secure setup. With that there are some caveats and experiences you need to prepare for. Strongly recommend that you first do some actions and signings of transactions on testnet, better yet, try to do exact same actions on testnet you plan to do on mainnet. Reason is that you might come into unexpected problems that are better experienced on testnet fir...

Post cover image

Gnosis safe troubleshooting

So you decided to use gnosis safe and its multisig for your smart contracts. Great decision if you moved from EOA and one private key to more secure setup. With that there are some caveats and experiences you need to prepare for. Strongly recommend that you first do some actions and signings of transactions on testnet, better yet, try to do exact same actions on testnet you plan to do on mainnet. Reason is that you might come into unexpected problems that are better experienced on testnet fir...

Written by

adriadrop

Written by

adriadrop