Price Sources

A brief review and comparison over the price sources

This price sources were studied and categorized:

  • On Chain Data:

    • Chainlink direct polling

    • Vizium (chainlink events)

  • Exchanges:

    • Bybit

    • Binance

    • Coinbase

    • OKX

  • Aggregators:

    • CoinMarketCap

    • Coingecko

The Exchanges Data source has been picked based on this criteria:

  1. Volume traded

  2. Amount of coins listed

  3. Websocket API

  4. API Documentation

Drawing
Exchanges picked based on volume and amount of coins listed

The aggregators like Coinbase and CoinMarketCap have two detected problems for our use case. They lack a Websocket API and the update period is 30 (coingecko) and 60 (CoinMarketCap) seconds. This large stale period has both advantages and disadvantages. On one side the aggregators will report a stable and reliable price in that period, but on the other side it will report a wrong price on volatile times that may be not so real time for a loan liquidation.

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