Get Walmart to accept Bitcoin lightning.

https://darthcoin.substack.com/p/lightning-network-is-awesome
https://darthcoin.substack.com/p/lightning-routing-fees-experiment
https://darthcoin.substack.com/p/lightning-node-maintenance
https://darthcoin.substack.com/p/recommendations-for-ln-users

Ваша задача обеспечить полную работоспособность биткоина. Вас для этого учили...

Highly recommend trying:
https://lightningnetwork.plus/

• So, as someone as mentioned, the best way to grow your capacity twice as fast is to go to lightningnetwork.plus and join/create triangles (you'll increase capacity twice as fast as for each channel you open, one will be opened to you).
• You can install Lndg and it will suggest you new channels to open.
• You can also use the moneni website, it will suggest you nodes: https://www.moneni.com/nodematch

lightning terminal was helpful to me if you are running LND. i think liquidity ads is the equivalent for core lightning: https://blog.blockstream.com/setting-up-liquidity-ads-in-c-lightning/ but haven't used liquidity ads