Sources

Where every number and picture on BTC Tides comes from. For how we count, see the method. BTC Tides is independent. No source listed here created, reviewed or endorsed this site.

Bitcoin price

• Live price and recent daily closes. Data provided by CoinMarketCap.com. Refreshed every few minutes, with its time shown next to it.
• Daily closes, July 18, 2010 to May 15, 2026. Coin Metrics community data, by Coin Metrics, Inc., licensed under CC BY-NC 4.0. Provided as is, without warranty, under that license. We changed it: we joined it to the CoinMarketCap closes and computed each event’s move from it.

Sky

• Event times. US Naval Observatory and NASA.
• Solar eclipses. Eclipse Predictions by Fred Espenak (NASA's GSFC)
• Lunar eclipses. Eclipse Predictions by Fred Espenak and Jean Meeus (NASA's GSFC)
• Sky geometry (crescents, Mercury’s phase). Computed with Astronomy Engine by Don Cross, MIT License.

Images

NASA images appear as factual illustrations of the events. NASA did not create or review this site, and using them does not mean NASA endorses BTC Tides. The live eclipse on the page is drawn from catalog numbers, not photographed.

• Moon. NASA's Scientific Visualization Studio
• Eclipses. NASA/GRC/Jordan Salkin, NASA/Bill Ingalls, NASA/Jim Spann, NASA/Joel Kowsky
• Mercury (enhanced color, PIA16853). NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington. 3D map: MESSENGER MDIS mosaic, USGS Astrogeology
• Venus. NASA/JPL-Caltech
• Mars. NASA, ESA, the Hubble Heritage Team (STScI/AURA), J. Bell (ASU), and M. Wolff (Space Science Institute)

Code

three.js. Copyright © 2010-2026 three.js authors. MIT License:

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