Data ownership. Perly designs and draws every chart on this site. The numbers behind them come from the third-party providers listed above — each linked to its own site and named on every chart it feeds. The data remains its providers' property, and Perly claims no ownership of it. Names and logos identify the providers only and imply no affiliation, partnership or endorsement.
Per-source terms. Price and market-cap data is used under CoinGecko's API terms, and the pages drawn from it carry the “Powered by CoinGecko” notice those terms require. The Fear & Greed index is alternative.me's and is displayed with attribution next to the data, as its terms require. Block-height figures come from mempool.space's open API. When CoinGecko does not answer, the altcoin shelf and the market's totals come from CoinMarketCap, credited beside the data, on the same line as CoinGecko, as “Data provided by CoinMarketCap.com”.
Our charts. The models, indicators, estimates and comparisons — the rainbow bands, Pi Cycle, Mayer Multiple, Stock-to-Flow, the power law, the supply map, the liquidation-cluster estimate and the rest — are computed by Perly from the providers' published series, using publicly documented methods. The computed series are ours and, like any computation, can contain errors.
No advice. Everything here is descriptive statistics about the past. Nothing on this page is financial advice or a recommendation to buy or sell anything.