# Multisig transaction from Java to Javascript Hi there, I have a client A that uses the JavaSDK to produce a multisig address composed by the account A and B and a signed transaction. The transaction is signed by A only. A wants to send the transaction to the backend B, so B can sign it and send to the blockchain. A sends to B this JSON: ```json {“... ``` --- # Save multisignature transaction on Postgresql Thank you for your help. At the end I read the insede of the files and store it in json format. --- # Sign a transaction file Hi everyone, how can I sign a multisignature transaction with a function in javascript? I want to sign the transaction and send it to the network. Is possible in javascript to open the .txn file and sign it? Thank you. --- # Read the blockchain Thanks aojjazz, the only problem is that I can’t use PureStake because they put a limit of 1 request at second. So my question is, in which way I can connect to a node and use the Indexer if I don’t have the Indexer installed on my device (computer, phone, tablet, …)? --- I would like to know the number of transactions that a particular address have made during a specific amount of time. In which way I can take this data with the Indexer? Is mandatory to have the database on my computer? Is possible for a mobile phone to see this data on my website without having the Inst...? --- # Access-Control-Allow-Origin problem Hi Tim, I hope that you can help me. I receive this error on the browser console: --- Hi everyone, I’m having a problem when I try to read from the blockchain. Sometimes I get this error: header CORS Access-Control-Allow-Origin is missing. This happen when I read from the blockchain with the PureStake credentials. But the strange think is that this problem don’t show up every time, b... --- The problem is that I want create a site not just for me, but for everyone. And for this goal I can’t install Indexer on every PC that want to read my site. --- I would like to show statistics through graphs that I create with recharts. --- Thanks Pablo, I have only one question. In which way I can use Indexer with my site? --- Hi everyone, I’m trying to read from the blockchain. I’m using the Purestake API to connect to the blockchain and read data from it. But I can’t execute more than one call for second with Purestake, and this is a problem for me because with the new Indexer 2 I can’t read all the data that i want but... --- # Blockchain and JavaScript Hi everyone, I’m trying to locate a transaction on the Algorand Blockchain with a script in JavaScript. When i run it from terminal i receive the transaction, but when i run it inside an .php file i have this error: require ReferenceError: require is not defined. The require is this: require(‘algos... --- # Install Python SDK in XAMPP Resolved. I need to execute the command sudo pip3 install py-algorand-sdk. I just execute pip3 install py-algorand-sdk. --- I already install Algorand Python SDK on my computer. When I run .py file from terminal it’s all ok. But when I run the same .py file in xampp I get a blank page. And I think that’s because xampp can’t find the package/module, where I need to install (again) to run the .py file in xampp like in term... --- Hi everyone, is possible to install Python SDK in XAMPP? I make this question because when I use “from algosdk import algod” or other similar imports I receive a blank page. So if someone know how use this import with XAMPP i appreciate very much. Thanks. --- # How to locating a transaction with my website I use PureStake API to locate a transaction. When i run the script i just see a white page, instead from terminal works perfect. --- I am using xampp and i want run a script in python to locate transaction on blockchain. When i run the .py file from my terminal is all ok, but when i use inside my website i can’t have an output, maybe because i need to install Python SDK in xampp? Thank you. --- # Locating a transaction Thank you very much. --- Is possible to locate a transaction using the Docker sandbox? Or i need to run a node? Thank you. --- # Is possible to compile a smart contract (teal program) using docker sandbox? Or i need to run a node? Thank you very much. --- I need to compile a teal program to understand how the smart contract world works. I try to compile with goal clerk compile command, but when i do it i receive an error: there isn’t. Thank you.