Event Triggers

When a transaction is mined, smart contracts can emit events and write logs to the blockchain which the frontend can then process.


What Are Event Triggers?

Events are critical on any blockchain as they facilitate communication between smart contracts, which are self-executing computer programs with the terms of the buyer’s and seller’s agreement directly embedded into lines of code for response with user interfaces. When a transaction is mined, smart contracts can emit events and write logs to the blockchain which the frontend can then process. 
In standard circumstances when a user wants to call a smart contract, they need to manually sign a transaction and interact with the blockchain. This is where automation can come into play to simplify things for users.
Event-driven automation uses specific triggers to kick-off processes without manual intervention. Once an event is identified, an automation tool can then trigger a predefined process or workflow of smart contracts.
This can be extremely beneficial for users in streamlining experience, such as:
1. For blockchains like Ethereum which are notorious for high gas fees and slowed transaction speeds; when the network is clogged from high usage, a trigger can be set for automated notifications to users when the threshold for fees are reached, saving time. 

2. For trading, notification triggers can be set when respective token prices reach a designated level, making the action of taking profits or mitigating losses fuss-free.

3. In the area of security, designated wallet addresses can be tracked, with notifications being sent from triggers for suspicious activities, such as large transfers of assets.

Author: Marco De Rossi, President & Cofounder

Marco De Rossi is the President and co-founder at HAL, who envisions a future tech landscape where companies or developers can choose to integrate decentralized technologies depending on whether or not they need to be trustless. Marco is an experienced speaker with a background in economics and arts. He holds a wealth of experience in the tech space as a programmer, a digital marketing consultant and as a journalist. He is also the founder of WeSchool, a leading EdTech company with 2M+ users.

HAL is a Web3 data infrastructure tool, allowing developers, protocols and companies to track, monitor and trigger data via simple APIs and push notifications. Their mission is to democratize and simplify access to blockchain infrastructure, bridging decentralized and centralized technologies.