Questions tagged [external-api]

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1answer
455 views

How can I display amount ETH funded and ICO-token received on a webpage

How can I display amount ETH funded and ICO Tokens received on a webpage in a crowdsale ICO campaign? The webpage is the personalised customer page after login. I will display the ethereum adress. ...
0
votes
1answer
2k views

ETH wallet offering API

I would like to develop a program that sends ETH. But I don't want to rely on an exchange such at bittrix or poloniex, as this causes delay (approving time), hassle (confirmation E-Mail), and often ...
5
votes
1answer
8k views

Obtain token transfer data from an address

I would like to obtain token transfer data from an address via Rest API For example, take this address: https://etherscan.io/address/0xfbb1b73c4f0bda4f67dca266ce6ef42f520fbb98#tokentxns (Etherscan ...
0
votes
1answer
2k views

Using https://etherchain.org API

When I request https://etherchain.org/api/difficulty using python 3.6 I get HTTPError: Forbidden. Does anyone know the solution? import json from urllib.request import urlopen from pandas.io.json ...
0
votes
1answer
881 views

API to get “total token left” of a custom token

If let say we launch a ICO using Ethereum blockchain, how can I check for total token left in the market? The typical workflow will be like: Investor send n ETH to my wallet System will verify the ...
10
votes
4answers
24k views

Is there API to create Ether wallet?

I know how to create wallet manually, however I would not like to take my clients out of website (I doubt anyone would) and would rather do their wallet creation behind the scenes when they register ...
2
votes
3answers
812 views

ERP systems and Ethereum

I wanted to know the integration state of ERP system (like SAP) and Ethereum. Is there an API that allow a smart contract to fetch information from a ERP to store that data? Thanks in advance Best!
4
votes
1answer
2k views

Why does etherscan.io API response with wrong balance?

Let's take the following company. The current ETH Balance is 268,691.327038426 Ether: But API response 268698327038426745609145: As you can see API response does't contain floating point so the ...
3
votes
1answer
198 views

What is the intended way for Ethereum contracts to interact with third party software? [duplicate]

Let us assume we have an Ethereum contract to issue software licenses. The contract creates an entry in it's local database to document the availability of the license to the purchaser. In which way ...
8
votes
1answer
2k views

Why does this Oraclize query only works once?

Why this code works one time? First time I get proper random number, but after that I get wallet response "Data can't be executed, so it will use all provided gas" I'm in Testnet. contract ...
2
votes
0answers
159 views

Using External API in a Contract? [duplicate]

Is it possible (and feasible) to have a solidity contract connect to an external api and execute a contract based on what is found? For example betting on sports games by agreeing to a credible API ...
6
votes
1answer
695 views

Can you do a POST to an external webform using a Ethereum smart contract?

Can you do POST or submit a form from an external site using a smart contract? And how can this be done? Are there any examples of live code out there?
4
votes
1answer
419 views

Live demo of parsing data from external API's like twitter into an Ethereum smart contract

I'm looking to make a simple ethereum smart contract to just monitor a twitter weather feed for the word "sunny". And if its sunny, it would send coins to some account I specify. Are there any live ...
59
votes
3answers
14k views

Why can't contracts make API calls?

The model that contracts can only accept and process data, instead of also being able to retrieve data from the Internet, seems limiting (even if not, it's less direct). If a concern is that data or ...
96
votes
7answers
32k views

How can an Ethereum contract get data from a website?

What is the process/workflow behind the process where an Ethereum contract gets some data from a website?

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