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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 (...
LACE pool's user avatar
  • 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 ...
LACE pool's user avatar
  • 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 ...
keefie's user avatar
  • 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.
Michael Daconta's user avatar
4 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 ...
Marek Mahut - StakeNuts's user avatar
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/
Medardas's user avatar
  • 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 ...
shr's user avatar
  • 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 $(...
Fermat's user avatar
  • 1,892
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 "...
leobelizquierdo's user avatar
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?
jnprogrammer's user avatar
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 ...
sean's user avatar
  • 1,463
3 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 (...
Michele Nuzzi's user avatar
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 ...
Alicia Basilio's user avatar
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 ...
Pavan Vora's user avatar
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 ...
Christian Schmitz's user avatar
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.
Fermat's user avatar
  • 1,892
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 (...
sean's user avatar
  • 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
LACE pool's user avatar
  • 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/...
Duco's user avatar
  • 33
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/...
George - APEX Stake Pool's user avatar
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
ntfreem's user avatar
  • 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/...
lley154's user avatar
  • 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 ...
lley154's user avatar
  • 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 ...
sean's user avatar
  • 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 ...
intrinsic-values's user avatar
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 ...
D S's user avatar
  • 322
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 ...
eddex's user avatar
  • 3,838
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 ...
Thom's user avatar
  • 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
zhekson's user avatar
  • 3,689
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 ...
Fermat's user avatar
  • 1,892

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