BTClock Shop
A black BTClock on a dark stage, its seven e-paper displays spelling B T C L O C K, as it does when it starts

A clock for the Bitcoin network

BTClock

Bitcoin, told in e-paper.

Order on btclock.store

Connecting to ws.btclock.dev…

14 screens.

Live from the Bitcoin network. Pick yours and the clock steps through them, ten minutes each by default.

  • Block height

  • Time & date

  • Halving countdown

  • Bitcoin supply

  • Sats per dollar

  • Price

  • Market cap

  • Fee rate

  • Mining pool hashrate Optional

  • Pool earnings, paid or estimated Optional

  • Bitaxe hashrate Optional

  • Bitaxe best difficulty Optional

  • Lightning wallet (NWC) Optional

  • Nostr zap Pop-up

  • Lightning payment Pop-up

Example values until the live feed connects.Optional screens and pop-ups show example values. Price, sats and market cap also in euros, yen and more. Every panel here is drawn by the clock's own firmware code, running in your browser.

12 fonts.

Switch any time, without a reboot. Most come in bold too.

  • Antonio

  • Oswald

  • Inter

  • Source Serif

  • Merriweather

  • Bitter

  • Atkinson

  • Open Runde

  • Roboto

  • Noto Sans

  • Ubuntu

  • Azeret Mono

New block
The clock jumps to the height, the LEDs flash orange and the optional frontlight sweeps.
After dark
The optional frontlight. The light sensor turns it off when the room goes dark.
Data
BTClock's own relay, or mempool.space and Kraken, Nostr, or your own server.
Setup
Scan the QR. A web UI in 15 languages. One-click updates.
Extras
Nostr zaps, Lightning (NWC), mining pools, Bitaxe, Home Assistant, the US/EU debt clock.
Inside
ESP32-S3, seven 2.13″ e-paper displays, four RGB LEDs, a light sensor, USB-C.
The BTClock taken apart along its axis: back, screws, main board, standoffs, the seven display modules, front panel

Build it yourself.

The complete kit: every board assembled, displays included. Standoffs, displays, front panel, back. Just screws, no soldering.

Buy the kit

Or ready to use.

Fully built and tested, flashed with the latest firmware. With or without the frontlight.

Buy it built With frontlight
BTClock with a black PCB
Black
BTClock with a white PCB
White
BTClock with BitPopArt's colour-printed front panel
Special edition by BitPopArt
BTClock with a laser-cut bamboo front
Bamboo

Make it yours.

Black or white. Special editions, designed with artists like BitPopArt. Or a laser-cut 5 mm bamboo front.

Close-up of the back of the main board, with “Tick, tock, next block.” and a block hash in the silkscreen

Open source.

Firmware, web UI, hardware & enclosure: Apache-2.0. Read every line. Build your own. git.btclock.dev