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    220 etherscan trabalhos encontrados, preços em USD

    Olá, preciso da criação de uma plataforma web para monitorar transações/atividades na blockchain do Ethereum. A plataforma deve informar ao usuário quando novas transações/atividades ocorrerem em determinados endereços na blockchain,...blockchain do Ethereum. A plataforma deve informar ao usuário quando novas transações/atividades ocorrerem em determinados endereços na blockchain, com informações em tempo real, conforme dinâmica a ser repassada ao desenvolvedor. É Importante que o desenvolvedor entenda e saiba ler qualquer transação/atividade ocorrida na rede Ethereum. Pode ser usado API de algum Blockchain Explorer (tal como o Etherscan), o que ofer...

    $750 (Avg Bid)
    $750 Média
    3 ofertas

    I need a good code example how I can take the latest trades from UniswapV2/Pancakeswap OR Etherscan/Bscscan. I will need to pull data from multiple contract addresses in real time, I only want pull data what I request for from database. I want any data what can be pulled from trades. I prefer to receive data in json format so I can handle it in php. I hope you understand what I'm asking for.

    $148 (Avg Bid)
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    28 ofertas

    I have a CSV file with a list of addresses, need a script that will add a column in that CSV with the ETH and Token balance value as you can see from Etherscan

    $19 (Avg Bid)
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    10 ofertas

    I need someone who can help me to build a blockchain explorer. It should have the function of contract verification and full interaction like etherscan. Please bid only if you're expert.

    $535 (Avg Bid)
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    40 ofertas

    ...mystery. I’m not trying to put anymore money into my wallet, or invest in anymore crypto at all... I just want to see if there is a way to get this amount out. Please be trustworthy and discrete, I will, let you know what coin it is upon further discussion with the right person, it would be helpful to know your way around binance smart chain, bep-20, metamask, json rules, airdrop coins, bscscan, etherscan, and cryptoswapping and withdrawal processes. Feel free to tell me any other qualifications you might have that are useful in situations like this. If you are an expert you will probably know right away if this situation has a potential resolution or not. I spoke to someone who successfully got some of his money out recently, he was just not very articulate or good with i...

    $5221 (Avg Bid)
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    22 ofertas

    I'm looking for someone to redesign my blockchain explorer (). The goal is to look as much as possible as Website is up and running, It's build with React + Typescript + a bit of Tailwind Css A github repository to the current version can be found here: Please, no automated messages.

    $1108 (Avg Bid)
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    67 ofertas
    Etherscan deploy Encerrado left

    Hi, developers. I am going to deploy blockchain explorer like etherscan using block scout. Docker and Block Scout is a must. Looking forward to hearing from you.

    $489 (Avg Bid)
    $489 Média
    22 ofertas

    Create a csv file with all Ethereum addresses that have 0.1 ETH or more out of all 200 million addresses. I don't know enough about etherscan to grasp what it takes in order to compose such a file, hence why I need the help. All I need is the file and that it is current, no scripts, queries etc (that would be a bonus). Thank you!

    $133 (Avg Bid)
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    15 ofertas

    i have an etherscan API key already and i am looking at all the api endpoints on the website but i dont see what i need Is there a way to see the newest contracts created with a MINT function? or a feed of all new contracts? please message me or give partial answer in your quote or enough info to tell me you know what im talking about. thanks in advance

    $37 (Avg Bid)
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    7 ofertas

    I'm looking for Blockchain developers who can develop a product like this The required features are: - Update the status of the food (Checked by Authority or not Checked) - Update the history and route (For example use Etherscan to know Food A went from Farmer B to Supermarket C) Building smart contract on Solana chain is preferred (Need low gas fee and fast speed)

    $15965 (Avg Bid)
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    35 ofertas
    copy trading Dapp Encerrado left

    A Master program execute trades in platform and same trade signals are broadcast to multiple client as a blockchain transaction. the Master can not access any client details and €client can not access any other details other than the trade signal. example trade signal sent from master>> 270522-01/P-ETH-1500-270522 /Sell/QTY1/Wallet address exam...broadcast to multiple client as a blockchain transaction. the Master can not access any client details and €client can not access any other details other than the trade signal. example trade signal sent from master>> 270522-01/P-ETH-1500-270522 /Sell/QTY1/Wallet address example trade ack sent from client>>270522-01/P-ETH-1500-270522 /Sell/QTY1/OK All transaction should be trackable either through etherscan o...

    $63 (Avg Bid)
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    3 ofertas

    Hi my name is Rhonda and I need help with things like verifying my crypto contract on etherscan so I can revoke them and get my money out.

    $527 (Avg Bid)
    $527 Média
    9 ofertas

    ...Cybersecurity is the most important element and must be built with that in mind from the ground up. Switch from proof of stake to proof of time. HashCore algorithm for ASIC-resistant (Maybe not necessary as miner support is debatable) Replace the Scrypt protocol with Prism protocol ErgoScript for smart contracts. Increase the block size by ten times Also needed a Blockchain scanner that is similar to Etherscan Block Explorer Decentralized Peer Matching Unique Genesis Block Unique Merkel Root Unique Magic Number UPnP Support Ipv6 support Payment gateway that process bank or credit transactions into crypto currency. Plugin for websites to process such transactions Transaction fees will be associated to crypto in development. The prism algorithm requires high-level (PHD) ...

    $17724 (Avg Bid)
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    30 ofertas

    I want to build a website like : Write "I am an Etherscan API expert" top of you bid text.

    $20 - $70
    $20 - $70
    0 ofertas
    Etherscan Encerrado left

    Hello, can you help me to verify and publish my Etherscan

    $147 (Avg Bid)
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    4 ofertas

    I need a a telegram bot, that will send notifications when there is incoming transaction to contract on etherscan. And also picture of money flow for each address (neo4j or api from bitquery that's all fine) Noted. I have a list of contract already, no need to add/ del wallet from user

    $278 (Avg Bid)
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    6 ofertas

    My problem is as following. I attended a group titled of Binance BSC smart contract project. We can send three times ETH to a smart contract address, and to get BNB back, every...with BNB RECOVER. So it can be activated. I thought it is just a lie. And I really want this money back to my TRUST WALLET. I can pay 0.1ETH to you, if you can help to get it back for me. Below is the information.: TRUST WALLET address: 0xD93b49D288858376428665F4C947dA5771d40251 Smart contract address: 0x0Fe161eB79c73BA6B7C5347362C0e8aB29c7cDbA Block namea: 14485528 You can check all in ETHERSCAN website. I need to know how much you will charge? My budget is 500U My lost fund is around 1550U If the cost is over fund, then tell me...

    $537 (Avg Bid)
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    4 ofertas
    Opensea trading tool Encerrado left

    I am looking for a senior web application developer of at least 5 years fullstack and experience with Blockchain, and NFTs for at least 1 year with portfolio on NFT API, Truffle, Ganche, familiar Etherscan block explorer. Requirements Scrape Opensea/Etherscan new NFT ERC721/1155 collections, volume and listings daily/hourly/10 mins and insert to NoSQL/Realtime Firebase DB Must be able to optimised code for fast CRUD. Preferably Expert in Python or Nodejs/Express Mongodb/Firebase and CRON Experience with frontend charts and Trading Bots will be considered for next project iteration. Type ‘I can code blockchain’ in bid message. Thank you

    $250 - $750
    Secreto ADC
    $250 - $750
    15 ofertas
    Data Entry Encerrado left

    I have a spreadsheet which needs approx 1500 bits numbers taken from 3 different sites, coingecko, etherscan and Twitter, approx 125 lines of data with upto12 fields that need populated, 3 of those fields need hyperlinked to the specific site. From the attached file, i need all the fields in yellow completed. Column A - where there is not an active hyperlink, go to and enter the 3/4 digit letters into search, then using Ctrl+K add Hyperlink, as shown on other examples Column C ,D,E,F,G all data (where applicable) taken from coingecko verbatim and entered into the spreadsheet (see coingecko screenshot) Column H is the number of likes shown at the top of the page next to the star on coingecko Column L,M,N details can be obtained (where applicable) from clicking on the dropdown

    $123 (Avg Bid)
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    25 ofertas

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    Destacado Secreto Concurso Top ADC

    Creation of new cryptocurrency. Cybersecurity is the most important element and must be built with that in mind from the ground up. Switch from proof of stake to proof of time. replace the Scrypt protocol with Prism protocol HashCore algorithm for ASIC-resistant, as well as the ErgoScript for smart contracts. increase the block size by ten times Also needed a Blockchain scanner that is similar to Etherscan Block Explorer Decentralized Peer Matching Unique Genesis Block Unique Merkel Root Unique Magic Number UPnP Support Ipv6 support

    $17900 (Avg Bid)
    $17900 Média
    17 ofertas

    We have to create something similar to @EtherDROPS5_bot for the first step we need: 1) add/edit/delete coins 2) receive swaps 3) add/edit/delete wallets 4) add/edit/delete pools

    $31 / hr (Avg Bid)
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    12 ofertas
    Parsehub Template Encerrado left

    Looking for someone who is able to create a parsehub template that is able to parse etherscan transactions.

    $138 (Avg Bid)
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    8 ofertas

    I want to create a telegram channel from API or etherscan API for new contract release but with extra feature (Looking for possible telegram group and functional website based from the token name) and then integrate it with telegram.. So what i need is : 1. Token detail (From etherscan or token fomo API) • Name and Symbol • Contract Address • Contract etherscan Link • Dextool etherscan Link 2. Possible Telegram Group (with Link) • Using token name or symbol as a based • Using possible word after the token name/symbol like Erc Eth Official Portal Coin Token • 2 week creation date 3. Possible Funct...

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    6 ofertas

    [sorry generic cover letters will be flagged/discarded] Please include in your proposal details of the NFT/wallet experience that makes you the right group to develop this. Please describe your thoughts on which architecture(s) you would build this with...a wallet / to the list (type a name) - View wallet list - remove the wallet from the list - validate / update wallet connection the tool should start with connections to the most popular 5 meta mask, coin base, and allow connections to public address (etherscan?) !Gallery view. - thumbnail view - show all / one limit to select only one wallet - click to view lightbox detail popup with next/prev - show full blockchain detail/transaction detail of the NFT - detail should include a link to the public verification URL if avail (...

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    26 ofertas

    Hi, I want to capture data from immutascan which is the blockchain explorer for immutable x. The person who does this project should have a strong understanding of how the data can be used to answer some questions so an understanding of data analysis is essential. Immutascan is similar to etherscan but with less functionality. Specifically I want all the data that has been generated for one project on the chain and the associated wallets. This is the specific project Questions I want answered from this data include thing like. Which are the largest wallets that contain items from this project What % of newly minted items go to wallets with no other items in them. How many new transactions are happening per

    $16 / hr (Avg Bid)
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    16 ofertas
    Project for Viktor A Encerrado left

    NFT create a system where it is able to mint directly from the etherscan contracts. It will also have a license so nobody can copy and set period to the systm.

    $30 - $30 / hr
    $30 - $30 / hr
    0 ofertas
    BLAZAR TOKEN Encerrado left

    ...Token Will be called BLAZAR TOKEN and will be Deflationary token with a 3% Burn Rate, with 50% of that being removed permanently from the supply and the other 50% redistributed to token holders who hold BLAZAR in the BLAZAR approved wallet. It will also trade under the named BLAZAR I want our tokens image uploaded online as Well. The Logo and Information for Blazar Token will be entered into Etherscan, Coinmarketcap, and Coin Gecko. Currently we have an ERC20 token called BLAZR that we have made 317 transactions to 207 unique Token Holders. We will need each of these to be airdropped the new token in exact increments since BLAZR was simply acting as ”placeholder” token to ensure them and us as to how many tokens they will be receiving of the new BLAZAR. We have 100...

    $6250 (Avg Bid)
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    7 ofertas

    Using and API provider like Etherscan I would extract data about NFT collections, for example, all the transfers for a specific collection (ex. Cryptokitties) and record them into my database. All the transfers must have below data: - from - to - hash - gas spent - value exchanged - tokenIDs Preferred programming language is PHP.

    PHP
    $160 (Avg Bid)
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    11 ofertas

    -write smart contract --it will support opensea standards / listing --reserved to owner for giveaways --all the standard contract finction included on etherscan -develop web page --allows people to mint nfts --details related to nft project suchas introduction, roadmap, about, team, social icons etc -assist with contract deployment to live net -availability during the presale and launch to ensure the process goes smoothly -A Complete project demonstration will be given including presale, public sale, nft reveal on testnets before deployment to live net.

    $250 - $750
    Secreto ADC
    $250 - $750
    27 ofertas

    I am looking for someone to help us extract a list of all the users from the major NFT platforms based on specific criteria. Will provide more details once contract is awarded.

    $146 (Avg Bid)
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    17 ofertas

    Creation of new cryptocurrency similar to doge. Cybersecurity is the most important element and must be built with that in mind from the ground up. Switch from proof of stake to proof of time. replace the Scrypt protocol with Prism protocol HashCore algorithm f...cryptocurrency similar to doge. Cybersecurity is the most important element and must be built with that in mind from the ground up. Switch from proof of stake to proof of time. replace the Scrypt protocol with Prism protocol HashCore algorithm for ASIC-resistant, as well as the ErgoScript for smart contracts. increase the block size by ten times Also needed a Blockchain scanner that is similar to Etherscan Block Explorer Decentralized Peer Matching Unique Genesis Block Unique Merkel Root Unique Magic Number UPnP Support Ip...

    $10400 (Avg Bid)
    $10400 Média
    16 ofertas

    I have a wallet that when ether is sent to it i need it to automatically transfer into another wallet. NodeJS, Web3js, and to be used Infura, Etherscan

    $165 (Avg Bid)
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    14 ofertas

    I need a a telegram bot, that will send notifications when there is incoming transaction to contract on etherscan. And I need an option to add and delete contracts to track and to set names for them

    $133 (Avg Bid)
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    3 ofertas

    Hello, We are looking for someone with experience in Solidity Smart Contracts ERC721 that can create a Full Audit of our Smart Contract. 1. Check code for Errors, Mistakes, Future Problems, Logic Issues. 2. Compile and Test Deploy on Rinkeby Successfully 3. Verify and Publish in Rinkeby Etherscan 4. Test all functions, whitelist, minting, flip state, change price, etc. Make sure everything works and it causes no logic issues 5. Create sample collection on Test OpenSea to see that minted item appears on opensea 6. SetBaseUrl test to make sure opensea is retrieving the data In summary, check that everything works well and that we will have no problems when deploying on mainnet. The Smart Contract is already READY and using OpenZeppellin so in theory it should have no issues b...

    $608 (Avg Bid)
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    36 ofertas

    Hello, I am looking for a developer to create a script to buy listings on opensea. I already have the monitor part to check the listings but I need the purchase automation part. It needs to connect to my meta mask with private key and automate the purchase on etherscan. I don't want to use opeansea's api. Script will have to be able to modify the gas price.

    $526 (Avg Bid)
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    30 ofertas

    I am creating my own NFT collection and I need an expert programmer that can cover all these things. Reply if you are interested. It will be in the ETHEREUM blockchain and everyone should be able to connect Metamask their metamask wallet to mint their NFTs. - smart contract written in the Solidity language (this is the code you see on etherscan) - website with minting capability written using Javascript - randomized generation of traits using a scripting language, typically Javascript or Python - artwork generated by layering traits on a base image - upload of metadata and artwork to IPFS (typical) or keep it on chain (only really makes sense for games) If you can cover all this fields, please contact me. Budget for the project is 2,000$.

    $2118 (Avg Bid)
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    66 ofertas

    ...ERC721 Smart Contract Create nft smart contract on eth block chain including a website with a minting link Need to speak fluent English and be able to voice call We have 3 Questions regarding your experience: 1. This job requires an experienced Blockchain Developer that has created ERC721 Smart Contracts. Have you created ERC721 Smart Contracts in the Past? If so, please provide links to EtherScan for us to review them. 2. Do you have experience integrating NFTs into a website? This job requires the creation of a website that displays the Non-Fungible Tokens that are created from the ERC721 Smart Contract you build. 3. Do you have experience integrating MetaMask into a website? 4 . Portfolio prof of previous nft / smart contracts work We do not want a NFT MARKET PLACE...

    $2558 (Avg Bid)
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    44 ofertas

    Creation of new cryptocurrency similar to doge. Cybersecurity is the most important element and must be built with that in mind from the ground up. Switch from proof of stake to proof of time. replace the Scrypt ...cryptocurrency similar to doge. Cybersecurity is the most important element and must be built with that in mind from the ground up. Switch from proof of stake to proof of time. replace the Scrypt protocol with Prism protocol HashCore algorithm for ASIC-resistant, as well as the ErgoScript for smart contracts. increase the block size by ten times Also needed a Blockchain scanner that is similar to Etherscan Windows, Mac, Linux, Android Wallet Block Explorer Decentralized Peer Matching Unique Genesis Block Unique Merkel Root Unique Magic Number UPnP Support Ipv...

    $11457 (Avg Bid)
    $11457 Média
    26 ofertas

    Hi Safi K., We issued tokens like links. However, Bytecode and ABI errors occur in etherscan. Can you modify this source code for the latest compiler version?

    $20 / hr (Avg Bid)
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    1 ofertas
    NFT Project Encerrado left

    I am creating my own NFT collection and I need an expert programmer that can cover all these things. Reply if you are interested. - smart contract written in the Solidity language (this is the code you see on etherscan) - website with minting capability written using Javascript - randomized generation of traits using a scripting language, typically Javascript or Python - artwork generated by layering traits on a base image - upload of metadata and artwork to IPFS (typical) or keep it on chain (only really makes sense for games) If you can cover all this fields, please contact me. Budget for the project is 100,000$.

    $75477 (Avg Bid)
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    29 ofertas

    Minting nft in etherscan which will fractionalise real estate assets

    $3181 (Avg Bid)
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    22 ofertas

    Futures for ERC20 Ehteurum Solidity: • Updated version secure version of the code. • ERC20 Standard functions. • I will be the owner of the Contract. • Addition on Trustwallet and Metamask from desktop and android and ios devise • Start an ICO or ERC...version secure version of the code. • ERC20 Standard functions. • I will be the owner of the Contract. • Addition on Trustwallet and Metamask from desktop and android and ios devise • Start an ICO or ERC20 token selling website additional features which need to be added • Burn Token • Reserve Token • Minting • Increase / Decrease / Constant token supply in secure way • ERC20 token deployment on the Etherscan. . Test the token for the overflow checks befor...

    $148 (Avg Bid)
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    17 ofertas

    ...на хеш транзакции 2) Value.Количество ETH после обмена. Я должен сам настраивать этот параметр в боте и в любой момент иметь возможность его поменять. Он должен определять примерное количество эфириума, которое будет получаться не только напрямую Токен-ETH, но также Токен-Токен, стейблкоины Токен-usdc, токен-usdt токен-dai. Все это должно выводится в эфириуме. Примерная цена должна браться с etherscan. 3) Возможность добавить/удалить определенный токен в исключение(black list) Вся информация содержится в хеше транзакции. Например. Для разработки можно использовать api ethersan либо

    $1300 (Avg Bid)
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    11 ofertas

    I need a PHP script to send ERC20 tokens as follows: 1. Make sure receiving wallet address is valid 2. Transfer X tokens to receiving wallet 3. Get transaction confirmation ID and create link to etherscan etc 4. Should be compatible with any EVM blockchain (MainNet, BSC, Polygon, etc) 5. Must be ERROR FREE and be able to handle (error trap) any scenarios coming from blockchain, such as transactions due to "insufficient gas" or "invalid address" etc. IMPORTANT - PLEASE READ: Please DO NOT BID unless you plan to honor the price you offer, as we will NOT accept any higher prices over the agreed bid price. Renegotiating a higher price after a bid is awarded is highly unethical and will be reported.

    $62 (Avg Bid)
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    5 ofertas

    Hi, I have an erc20 and erc721 smart contract on Etherscan but one of them couldn't be verified. I think there might be some error when my dev deployed it previously so I'll need you to audit the codes asap. I'll also need you to fix my website's minting code. The minting button was based on an old smart contract and currently doesn't work with the new contract.

    $52 / hr (Avg Bid)
    $52 / hr Média
    9 ofertas

    Hi, I need someone to guide me on verifying my erc20 and erc721 smart contract on Etherscan and fix my website's minting code. The minting button was based on an old smart contract and currently doesn't work with the new contract.

    $51 / hr (Avg Bid)
    $51 / hr Média
    5 ofertas

    I need a PHP script to send ERC20 tokens as follows: 1. Make sure receiving wallet address is valid 2. Transfer X tokens to receiving wallet 3. Get transaction confirmation ID and create link to etherscan etc 4. Should be compatible with any EVM blockchain (MainNet, BSC, Polygon, etc) 5. Must be ERROR FREE and be able to trap any scenarios coming from blockchain

    $181 (Avg Bid)
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    9 ofertas
    Token Creation Encerrado left

    ...blockchain for it in the future. What is your idea and options for us? 3. Please explain us: how the price of this token will increase in time, IF we don’t sell it, and just gift it, AND if we want to sell it, how can we, and what you can do for us? 4. We need IOS and Android app, and a website. What is your position in these options? 5. Are you making a smart contract for us? 6. We want to list in Etherscan, and exchange markets like Coinmarketcap, Coingecko, binance, OR where you can list us? How much is it costs? 7. Regarding a wallet, definitely we need wallet and making a wallet for the customers, or can we use / or the customers use other wallets, like metamask? 8. How to secure our idea and the token we make to do not let others copy our idea? 9. Are you able to desi...

    $687 (Avg Bid)
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    12 ofertas