There’s widespread excitement about the new Web 3.0 era of decentralized apps, but up to now most dapps have struggled to deliver really compelling user experiences. In general, dapp user experiences lag far behind what users have come to expect in the conventional Web 2.0 world.

There’s a deep underlying reason for this — dapp developers have lacked the powerful platforms and interfaces that are commonplace in Web 2.0 and that make it easy to deliver great user experiences.

One of the most used testnets for EOS was the Jungle Testnet. Recently, it relaunched as Jungle 2.0. dfuse is glad to join on to this new testnet, offering an API service to all developers who want to deploy and test on Jungle 2.0.

The goal of eosq, the high-precision block explorer built by the EOS Canada team, is to help developers find the key information they require from the blockchain. One of the main feats we first set out to tackle was the data pipeline on which eosq would rely, which was the genesis of the dfuse API for EOS.

Best of luck to you and your team over the course of these next sleepless hours while you develop your submission to the EOS San Fransisco Hackathon! We here at dfuse wanted to create a quick one-pager that will help you access a few tools that will make your life a little easier.

If you would like access to a streaming API that is connected to both the EOS mainnet and the CryptoKylin testnet, you can apply for your free API key in the form below.

We have released some new changes - some breaking changes (all clearly documented - mainly renames), new libraries, and some new features.

New Code Releases

1. eosws-js new Javascript library, exposing new features
2. eosws-go new Golang library, exposing new features
3. dfuse API updated documentation, check the "Release Notes"
4. eosc improved to support headers to use push guaranteed endpoints.

Quick summary of new API features

1. New REST endpoint (/v0/state/table) to query the blockchain state at any block number
2. New instrumented REST proxy for /v1/chain/push_transaction, with stronger guarantees (block inclusion, irreversible attained) before returning
3. Support for tracking longest chain in `get_table_rows` (with undo and redo), giving a constantly syncing view of a given table
4. New message `get_transaction_lifecycle` that provides a complete view of a transaction's lifecycle, navigating its state changes through deferred creation, cancellation, and updating you as it changes.

NOTE: this is a BETA release. Please join the discussion in the dfuse API Telegram channel is you have any questions or feature requests.

Introducing dfuse Streaming API for EOS

One of the biggest features missing from blockchains is a robust and reliable streaming API, which is a major hindrance to the mass adoption of EOS by developers. dfuse - the team behind EOS Canada, is pleased to introduce the beta version of the first streaming API for developers looking to build dapps on EOSIO.

Real-time application area

EOSIO delivered the capability to interact with a blockchain at speeds previously only seen on a conventional database. Applications wishing to operate with real-time speeds need real-time data. By helping to remove the pain points developers experience in interacting with blockchains, such as decreased speed and degraded user experience, we expect with the dfuse Streaming API to see developers focus their efforts on the next generation of dapps. We also expect that the migration towards EOS by these developers will happen much sooner, as more of their previous knowledge and skills are now transferable.

Some of the amazing capabilities offered by the dfuse Streaming API

• Capture detailed aspects of an action: detailed RAM costs, deferred transactions, internal state changes
• Quickly process the chain to gather information and state from a specified blockheight
• (Coming soon) the ability to be notified of changes to a smart contract’s table with deltas

During the beta period - where the API could live some instabilities, we are continuously updating the API to build the strongest platform for your project on EOS.

Join us to build the Web 3.0

We look forward to working alongside and supporting the many talented developers who will pave the way to build the Web 3.0. Please fill out the form below to sign up for your own dfuse API key.