Index non-Substrate chain data

dzhelezov commented 3 years ago

Index on-chain data of a non-Substrate chain

Prize Bounty

Bounties Totalling $7000 in USDC depending on the quality of the submission, splitted between the winning ($6000) and the runner-up ($1000) submission.

Challenge Description

At the moment Subsquid supports data indexing only for chains built with the Substrate framework. The indexed data is exposed via a GraphQL endpoint supporting batching and filtering. For example, it is possible to batch all on-chain events from block 10000000 to 11000000 with the name balances.Transfer
For example, using the Kusama Indexer endpoint one can retrieve such events with the following query

query MyEvents {
  substrate_event(where: {name: {_eq: "balances.Transfer"}, blockNumber: {_gt: 10000000, _lt: 11000000}}) {
    data
    blockNumber
    blockTimestamp
    blockHash
  }
}

You can play around further by adding extra fields and filtering using the explorer pane of the console above.

This bounty aims to build a similar GraphQL endpoint for any non-Substrate-based chains (e.g. Algorand, Terra, Avalanche, Solana, whatever you like the beast). The submission should expose on-chain data via GraphQL API, supporting the following features:

get block data
get tx data within a given block range, satisfying filtering parameters
get event data within a given block range, satisfying filtering parameters
it should be possible to fetch multiple txs or events in a single query
support filtering by the most relevant attributes

Not all the features from the list above have to be supported for a submission to be considered for acceptance, but the more the better.

Submission Requirements

A Submission should be a fully runnable indexer with a GraphQL API together with documentation and sample queries.

Judging Criteria

A readme and Github repo link and a video tutorial must be submitted.
Is it possible to reliably batch events/transactions satisfying filtering conditions similar to the existing Subsquid Indexers like Kusama

Winner Announcement Date

A winner will be announced shortly after the hackathon is complete. The winner gets 6000 USDC and the runner-up submission is awarded 1000 USDC.

Resources

Subsquid docs
Kusama Indexer
A repo with indexer setups for different Substrate chains
Subsquid (Hydra) indexer lib code
Subsquid (Hydra) indexer gateway lib code. It is powered by Hasura

Where to get help

Subsquid Tg chat: https://t.me/subsquid
Subquid Discord: https://discord.com/invite/5cQBWHWJvW
HydraDevs Tg chat: https://t.me/HydraDevs

gitcoinbot commented 3 years ago

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

This issue now has a funding of 7000.0 USDC (7000.0 USD @ $1.0/USDC) attached to it.

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gitcoinbot commented 3 years ago

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

Work has been started.

These users each claimed they can complete the work by 2 weeks, 3 days from now. Please review their action plans below:

1) cryptofervid has started work.

Analysing the requirements and going through the documentation. Project details to be updated soon.

Learn more on the Gitcoin Issue Details page.

subsquid / gitcoin-hackathon-issues