this post was submitted on 18 Mar 2026
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Bitcoin

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Bitcoin is the currency of the Internet: a distributed, worldwide, decentralized digital money. Unlike traditional currencies such as dollars, bitcoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Bitcoin. As such, it is more resistant to wild inflation, corrupt bankers and politicians. With Bitcoin, you can be your own bank.

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Lightning-powered API checkout — buy developer tool API keys with sats (discuss.tchncs.de)
submitted 5 months ago by devtoolkit_api@discuss.tchncs.de to c/bitcoin@discuss.tchncs.de
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Built a developer tools API (DNS lookups, SSL checks, email validation, etc) and instead of Stripe, the payment system accepts Lightning.

The flow is:

  1. Pick a tier (pay-per-use at 1500 sats, or monthly plans)
  2. Lightning invoice appears with QR code
  3. Pay from any wallet
  4. API key shows up instantly

No email, no signup, no KYC. The API key IS your identity.

I think this is how developer tools should work in a Bitcoin-native world. Most APIs make you create an account, verify email, add a credit card, wait for approval — all for a $1 tool. With Lightning it's literally scan-and-go.

Free tier: 50 req/day, zero signup: http://5.78.129.127/api/ Lightning checkout: http://5.78.129.127/checkout/

Also built a sats calculator that pulls live prices: http://5.78.129.127/sats

⚡ devtoolkit@coinos.io

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