Re: [bitcoin-dev] BIP OP_CHECKTEMPLATEVERIFY

2020-06-07 Thread Joachim Strömbergson via bitcoin-dev
Hello everyone, regarding OP_CTV, I am considering the scaling use case, specifically an exchange (or similar) who wants to batch pay to OP_CTV to many users, and I wonder 1) How do you expect the exchange to communicate the proof of the payment to the user wallets such that they are able to c

Re: [bitcoin-dev] Coins: A trustless sidechain protocol

2020-01-14 Thread Joachim Strömbergson via bitcoin-dev
Hi Robin. While your motivation seems reasonable, your solution is not. It is not enough that a problem exists. Although the solution must be technically sound for the proposal to be interesting. So I agree it makes sense to consider Bitcoin sidechains, not sure if with PoS consensus or other,

Re: [bitcoin-dev] Coins: A trustless sidechain protocol

2020-01-13 Thread Joachim Strömbergson via bitcoin-dev
Hi Robin, inline... ‐‐‐ Original Message ‐‐‐ On Monday, January 13, 2020 7:47 PM, Robin Linus wrote: > Hi Joachim, > > Thank you for your detailed feedback! > > Regarding Reason #1: > This proposal is less like Bitcoin vs. Altcoins and much more like Ethereum > vs. ERC20 tokens, becaus

Re: [bitcoin-dev] Coins: A trustless sidechain protocol

2020-01-13 Thread Joachim Strömbergson via bitcoin-dev
While I haven't rejected sidechains entirely yet, this particular proposal seems uninteresting, especially for two reasons. One – it introduces a new token for each sidechain and suggests atomic swaps to be used for the exchange of the mainchain token with the sidechain token. Such a model seem

Re: [bitcoin-dev] Coins: A trustless sidechain protocol

2020-01-13 Thread Joachim Strömbergson via bitcoin-dev
> Instead of using sidechains, just use channel factories. I am not familiar enough with the latest advancements in this field. Is it possible using LN/channel factories to achieve off-line-like participation user experience without previous registration with any kind of gateway provider? For e

Re: [bitcoin-dev] Dynamic MaxBlockSize - 3 Byte Solution

2019-11-08 Thread Joachim Strömbergson via bitcoin-dev
While I agree on NACKing the proposal as it does not add anything new and fundamentally misunderstands what scaling is (or is not in this case), I disagree with the claim that we do not need to deal with block size issue in the future any more. Segwit increased our possibilities on how to use th

Re: [bitcoin-dev] Signaling support for addr relay (revision #1)

2019-10-24 Thread Joachim Strömbergson via bitcoin-dev
> Anyway, according to the current considerations I explained in this email, > I’d suggest extending BIP-155 with per-link-direction negotiation, but I’m > interested in the opinion of the community. I don't have a strong opinion here but intuitively, it seems to me that per-link variant makes

Re: [bitcoin-dev] Chain width expansion

2019-10-15 Thread Joachim Strömbergson via bitcoin-dev
> > > > [...] to generate much longer chain with superslow timestamp increase > > > > (~5 blocks in 1 second) without increasing difficulty (i.e. staying at > > > > min. diff.). [...] > > > > In that case, it would take about 7 minutes of block time seconds for > > > > the next retarget period,

Re: [bitcoin-dev] Chain width expansion

2019-10-15 Thread Joachim Strömbergson via bitcoin-dev
> > [...] First you provide proof of your best block height via coinbase [...] > > So I don't think you can use the height in the coinbase for that > purpose, as it's not possible to validate it without the previous > headers. That's common for more than just the height. You can fake it of cours

Re: [bitcoin-dev] Chain width expansion

2019-10-12 Thread Joachim Strömbergson via bitcoin-dev
I like the backwards syncing idea. First you provide proof of your best block height via coinbase, then sync backwards. It solves lots of related problems. You know how much you can expect from the given peer. On different note, one of the problems that I haven't seen mentioned here yet is the