Oddbean new post about | logout
 As for managing the double spend, it could be done with a cryptographic accumulator. 
 I like this a lot  
 Yeah, the simple things pop out, often after years of hard study. I realized that Bitcoin was no different than the reserve settlement systems, other than nobody is in charge. Lightning is like the depository systems that hold collateral, like overnight loans.

And ecash is just like regular cash - a transferable credit note. 

In the earlier private banking systems ‘cash’ had numerous private issuers. It worked (still works) really well, until,someone got the bright idea we needed central banks. 
 If I can issue and keep track of my own credit notes and can clear out to Lightning, I don’t need to use a mint. I am my own mint. 
 How is credit to yourself useful? It's all in the same book, so any credit to yourself is automatically cancelled out by the debit. Maybe I'm missing something? 
 It’s not useful for myself. But it’s useful when I am testing and I am rugging myself. However, since it is a bearer instrument, if I send it to someone else, it suddenly becomes a liability. 
 So you're thinking of it as a simpler and custodial forms of payment channels perhaps? E.g. I wouldn't immediately cash your zaps, but keep them for a while, and efficiency increases if I then cash them in all at once later? 
 Exactly. If those ecash tokens are encumbered to me, I can wait until I accumulate an amount before I clear out. 
 Few years ago on a podcast I shared how I use lightning to "borrow" against my UTXO's to acquire more Bitcoin, all self-custodial with no counter party risk*

Been working for years. 

*nothing is perfect in this regard (except for cold storage priv keys) but this is the closest thing we have imo 
 can U share a link to podcast? 
 If you hold the ecash from the mint on your npub and the mint shuts down, can you still sweep to lightning?  Could you swap to ecash from another mint and melt the ecash from the closed mint? Or would the ecash show invalid if you tried that with the mint closed. 
 If it’s another mint and it shuts down I am out of luck. If it’s my own mint, I only need to worry about outstanding credit notes that if not redeemed would impact my npub reputation. If I issue credit notes to myself, they don’t really matter because I am issuing a liability to myself. 
 I already manage multiple mints in #nostr #safebox. I have my own mint so in testing, if I use my own mint, I don't need to worry about lost ecash issued by my mint. No so with other mints.  
 Ok that makes sense, I like the idea of companies holding bitcoin in reserves and issuing ecash or credit based on their reputation.  Especially if it's a local company so its reputation and web of trust are at stake if they rug users. 

I think cash issuance (credit) is perceived as centralized and gov controlled (since it is today), but like you said that wasn't always the case.  Many different private cash (credit) issuers that all work together is a vast improvement over our current credit based systems. 
 Yup. Canada had a very successful and stable private banking and note issuance system until it decided to copy the US and create a central bank. 
 EndtheFed (all of them) 🤙🏻