Sources
Crypto Data Methodology
Where every number on Tickerbook comes from, how often it changes, and the limits you should keep in mind when you read it.
- Source
- CoinGecko public API, requested directly by your browser
- Currency
- US dollar for every price and total
- Refresh
- Every 60 seconds while the page is visible; paused in background tabs
- Universe
- Top 100 assets by market cap on the markets page; 12 assets with full pages
- Charts
- 24H uses points about every 5 minutes, 7D to 90D hourly, 1Y daily
- Caching
- Responses kept in your browser for up to 60 seconds to avoid duplicate requests
Where the data comes from
Tickerbook does not run its own price feed. Every price, market cap, volume and supply figure and every chart point comes from the CoinGecko API. CoinGecko collects trade data from a large number of exchanges, filters out venues and pairs it considers unreliable, and publishes an aggregate price for each asset.
Your browser requests the data straight from CoinGecko. We do not store, edit or re-publish the figures on our servers, so what you see is what the source reports at that moment.
How figures are calculated
Market cap is price multiplied by circulating supply. Percentage changes compare the current price with the price at the start of each rolling window. Bitcoin dominance is Bitcoin's market cap divided by the total market cap of all assets the source tracks. Supply figures are reported by each project and compiled by the source.
Timing
We request fresh data every 60 seconds and show the time of the last successful update next to the figures. The source itself updates on its own schedule, so a figure can be a little older than our timestamp suggests. If a request fails, the last good figures stay on screen with a note that they may be out of date.
Limits
Aggregate prices can differ from the price on any single exchange. Reported trading volume depends on what exchanges report. Supply figures for newer projects may be incomplete. Very small or illiquid assets can show sharp moves that reflect a handful of trades. None of the data is a recommendation to buy or sell.
Corrections
If a figure looks wrong, check it against the source first; if the problem is in how we display it, contact us and we will fix it. Background text on the coin pages was last reviewed on 21 October 2026.