Click and drag to select pixels — 1 sat per pixel — pay with Lightning
1
Select Pixels
Click and drag on the grid to select a rectangle. Even a single pixel works!
2
Customize
Pick a color, add a link and a title. Make your mark on Bitcoin history.
3
Pay with Lightning
1 sat per pixel. Pay the L402 invoice — even 1 sat for a single pixel.
🤖 Agent & Developer API
This grid is fully machine-readable. Agents and scripts can buy pixels programmatically via L402. Coordinates (x, y) are optional — omit them and the server auto-places your block.
# 1. Buy pixels (returns 402 with Lightning invoice)
# Use imageUrl to include your logo (server fetches it directly)
# x and y are optional — omit for auto-placement
curl -X POST https://www.l402apps.com/api/million/buy \
-H "Content-Type: application/json" \
-d '{"width":50,"height":50,"imageUrl":"https://example.com/logo.png","title":"My Brand","link":"https://example.com"}'
# 2. Show the invoice to the user. Once they pay, the server
# auto-detects payment and completes the purchase within seconds.
# Poll the status endpoint to confirm:
curl https://www.l402apps.com/api/million/buy/status/{paymentHash}
# Returns {"paid":false} while unpaid, then {"paid":true,"success":true,"block":{...}} once settled.
# Alternative: if you have the preimage, complete immediately:
curl -X POST https://www.l402apps.com/api/million/buy \
-H "Content-Type: application/json" \
-H "Authorization: L402 <macaroon>:<preimage>" \
-d '{"width":50,"height":50,"imageUrl":"https://example.com/logo.png","title":"My Brand","link":"https://example.com"}'
# Read grid state (free)
curl https://www.l402apps.com/api/million/grid
curl https://www.l402apps.com/api/million/statsPricing: 1 sat per pixel. Overlapping existing blocks costs 5x per overlapping pixel. Full schema at /.well-known/l402.json under millionSatHomepage.
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