8
votes
How can you listen to all incoming transactions of a wallet address?
There are different ways.
You can do what jnprogrammer said, or you can run the graphql setup https://github.com/input-output-hk/cardano-graphql providing an entire stack of tools including the API (...
- 619
5
votes
Accepted
Is there a Python Version of Cardano Node-CLI JavaScript Library?
I know you are asking for a python library interacting with a node, but let me tell you there is a very comprehensive python library with which you don't need to run a node yourself.
You can find a ...
- 619
4
votes
Accepted
How to Get Started with Cardano Native Script
You can find fairly extensive documentation on Cardano Native Script (aka Simple Script) here.
In short, you can define a JSON object with a simple set of rules known as scripts to validate operations ...
- 431
4
votes
How to talk to Cardano blockchain using Javascript
While I have not used this API myself, the Blockfrost API has a JavaScript SDK that can do that. There is a free tier.
- 301
4
votes
How can you listen to all incoming transactions of a wallet address?
I believe this guide would help you out:
https://developers.cardano.org/docs/integrate-cardano/listening-for-payments-wallet/
- 141
3
votes
How to talk to Cardano blockchain using Javascript
Ogmios runs alongside a cardano node and provides a websocket api to sync or query the chain. Documentation is available here. If you don't want to host the node yourself, or want to get up and ...
- 31
3
votes
How can you listen to all incoming transactions of a wallet address?
What info do you wanna get specifically? If it is just the UTXO's at an address and you are running a node then the following script suffices.
#!/bin/bash
cardano-cli query utxo --mainnet --address $(...
- 1,862
3
votes
How can you listen to all incoming transactions of a wallet address?
All the above solutions can do the job, but you'll end up polling the blockchain on each one. Another solution though is using tangocrypto services. Their webhooks feature will allow you to "...
- 196
3
votes
Accepted
Blockfrost, GrapgQL or any API for cardano help, working with javascript
Using the Blockfrost SDK is pretty straight forward, as in this example:
import { BlockFrostAPI } from '../src/index';
async function run() {
const API = new BlockFrostAPI({
projectId: 'YOUR ...
- 7,269
3
votes
How can you listen to all incoming transactions of a wallet address?
How about running a Cardano node and build a script that queries the target address and produces something consumable by your API?
- 784
3
votes
Programmatically creating the policyid / scripthash in Javascript (Browser)
Finally got my head around this, thanks to this version in Python: Re-Implementing Policy Hashing in Python by @tycl.
Basically we need to
Parse the policy (JSON)
Follow the CDDL specifications to ...
- 1,463
2
votes
Accepted
cardano-serialization-lib-browser loaded as empty module in NextJS
I do not know why, but this worked for me
this._wasm = await import(
"../node_modules/@emurgo/cardano-serialization-lib-browser/cardano_serialization_lib_bg"
:s ES6 notation did not ...
- 917
2
votes
Cbor address to bech32 type address in JS or python
You can also use typhonjs used by typhonwallet. It's a Pure JS library not dependent on WASM.
Install
npm i @stricahq/typhonjs
Usage
const typhonjs = require("@stricahq/typhonjs");
const ...
- 131
2
votes
Accepted
Need client side browser Javascript example on how to make ADA payments via the Eternl wallet?
https://github.com/Hyperion-BT/PicoSwap could be the demo you are looking for.
Hosted here: https://www.hyperion-bt.org/PicoSwap/ (chrome only)
The demo contains example code for creating transactions ...
2
votes
Accepted
What is the best (and most secure) way to store private keys in an Express server?
See this post, Best setup of your air-gapped offline machine (cold environment)?.
Also consider the following https://cosd.com/frankenwallet.
- 1,862
2
votes
Accepted
How to get NFT count of wallet address
You'll probably need two steps for this.
First, fetch all assets at the stake address using this endpoint:
https://cardano-mainnet.blockfrost.io/api/v0/accounts/{stake_address}/addresses/assets
(...
- 1,463
2
votes
Api for historical USD rates?
Coingecko is what comes to my mind. Checkout https://www.coingecko.com/en/api/documentation -> /coins/{id}/history
- 619
2
votes
EDIT | Is it possible to send (transfer, request) ADA using just Javascript?
I recommend using Lucid for this:
import { Blockfrost, Lucid } from "lucid-cardano"; // NPM
const lucid = await Lucid.new(
new Blockfrost("https://cardano-preview.blockfrost.io/api/...
- 33
2
votes
Accepted
Javascript SDK for working with Plutus smart contracts
You have many options for that:
programmatically create a Plutus smart contract to mainnet
Here the only option is plu-ts; it allows you to write and compile a smart contract directly in typescript (...
- 992
1
vote
Recover a Cardano wallet offline
You can do it using cardano-cli and cardano-address (or cardano-wallet instead of cardano-address, with the same parameters) using the script here:
https://gist.github.com/cardano-apexpool/...
- 1,245
1
vote
Recover a Cardano wallet offline
@enzo to generate offline addresses from mnemonic, you can use cardano-addresses https://github.com/input-output-hk/cardano-addresses
- 11
1
vote
Recover a Cardano wallet offline
My preference is to use a javascript library for this.
For example, use https://github.com/StricaHQ/bip32ed25519 to generate/convert the seed phrase to a private/public key.
Then use a javascript/...
- 297
1
vote
Accepted
Unexpected error coming from Helios library during connection to preview TestNet verification?
The issue is related to picoswap code base not being updated to use the latest Helios version (currently v0.11.2) correctly. It was working on a prior Helios version around v0.9.x but picoswap is not ...
- 297
1
vote
Create transaction serialization-lib > version 10
You can check the changelog here for some examples and explanations: https://github.com/Emurgo/cardano-serialization-lib/releases/tag/10.0.0
A rough example could look something like this:
function ...
- 1,463
1
vote
Cbor address to bech32 type address in JS or python
First install the npm module:
npm i @emurgo/cardano-serialization-lib-browser
Then you need a wasm loader module
class wasm {
async load() {
if (this._wasm) return;
/**
* @private
...
- 474
1
vote
Javascript assetName Decoding
cardano-serialization-lib does pretty much everything for building and reading transactions and interacting with the webwallets.
Here is how you can extract all the asset names from the a user's ...
- 312
1
vote
Accepted
How can I use cardano-serialization-lib in the browser to decode CBOR?
With the help of Samuel's answer, I have been able to get it running.
Some important things I didn't know:
import from CDN has to be done with the full url.
The library has to be imported inside of ...
- 3,753
1
vote
Accepted
Programmatically creating the policyid / scripthash in Javascript (Browser)
You can do this using the 10.0 beta version of cardano-serialization-lib which should make it into stable pretty soon (I'm in the process of testing this, you can follow the status on this Github ...
- 354
1
vote
Bad inputs, value not conserved
Make sure that your tx-hash AND your tx-ix are being updated every time you use the function, especially if change is being sent back to yourself, which would raise the value of your tx-ix
- 3,639
1
vote
Burn token using blockfrost java sdk?
There is a great post on the Cardano form that goes in-depth on different types of burning methods [1]. Note that these tokens send to such addresses still exists but can't be transferred anymore by ...
- 1,862
Only top scored, non community-wiki answers of a minimum length are eligible