I concur.
1 Like
Update on Mercury from mappum - does anyone have ideas on how to solve this?
I’m a little worried about NubitsJ. Since Nubits uses PoS, the blockchain can’t be safely verified by an SPV client. It seems that NubitsJ tries to solve that by trusting a centralized server for blockchain download, which is very insecure (full trust is being placed in that server).
If a more secure model can be worked out, I will work on adding Nubits. This might involve a client with a little more overhead than SPV (e.g. a pruned full-node).
https://bitcointalk.org/index.php?topic=946174.msg10886652#msg10886652
One of the responses covered what I would have written – just use a Nu daemon to “talk” with Mercury via RPC. Unless there’s one hiding in plain sight, I haven’t found a PoS-based SPV client for the reasons mentioned (namely, that you need to store the complete set of unspent transaction outputs).
Assuming a mininmum difficulty in the next, say 6 months, someone can precalculate all possible kernels of the network in 6 months above the minimum diff, then all nodes on the network only need to carry this list of UTXOs and keep recording newly matured ones for the next 6 months. The volume of list+newly_matured outputs should be much smaller than the complete set.
The list can be verified, and is not centrally controlled. It can be updated very 6 months.
One risk is that if the difficulty goes below the assumed minimum, kernels below the assumed minimum won’t be accepted by these nodes.
Today Coinffeine opened for tech preview http://www.coinffeine.com/download.html
Before releasing the first version of Coinffeine, we want to listen the community and receive as much feedback as possible. Our Technical Preview lets you participate in Coinffeine development and influence our roadmap by testing the early versions of the product and reporting your feedback.
This look extremely impressive I have to say. And look what they have:
So far its only OKPay, but it will be very easy for others to extend on their wonderful library. I hope everyone gets what I want to say.
2 Likes
How do you think it differs with ( b&c and nubit)? 1)
They use p2p and okpay. 2)
So in 1) you have a synthetic usd to get into the exchange.
In 2), you seem to have usd to get into the exchange.
Furthermore 2) seems not based on a blockchain…
All your questions are answered in detail here:
https://github.com/Coinffeine/coinffeine/wiki/Exchange-algorithm
What I am currently trying to figure out is why it shouldn’t be totally trivial to fork this for Nu.
This won’t be required. OK, I think what would need to be done is this:
And then a small interface here:
and we’re done (i think). Then we make a pull request and hope that they will integrate us soon, and otherwise fork it 
I absolutely have no experience in Scala, but they wrap everything around bitcoinj, and since @Cybnate @sigmike made nubitsj (brilliant software, really fully replaces bitcoinj), I could imagine that all this will be not much effort.
Anyone interested / up for the task?
EDIT: I’d also like to point out that the whole system involves some trust at least when dealing with irrational people. However, in Nu people dealing with the LPCs should bring up more trust than to a random person, because its also the LPCs trust by Nu shareholders (and maybe even the payout) which is at stake. So I would always prefer an (“official”) NBT payment provider over a BTC payment provider if its about trust.
4 Likes
Tks. What I do not understand is the following; where do the parties involved need to make the security deposits in "They formalize this intent by creating a deposit that expires after a certain amount of time "?
This question is also valid for smart contracts in general.
I am trying to figure out the difference with b&c in which the deposits are made into trusted signers addresses.
I believe its Matthew (Android) ?
Anyone interested / up for the task?
Will it help speaking directly with the coinffeine team?
I’m sorry for giving the wrong credit. It was Matthew and his software is just awesome, I couldn’t find a single call to bitcoinj in the Coinffeine code which didn’t have a counterpart in nubitsj.
Yes totally! Their license is comparably strict but its somehow understandable considering their business model (source):
[ After a long long introduction … ] 3.1 Subject to the terms of this License Agreement, Coinffeine Company grants
you a limited, worldwide, royalty-free, non-transferable and non-exclusive
license to use the Coinffeine Software solely to:
A. Develop plugins for the Coinffeine Software.
B. Develop applications for NonCommercial purposes to run using the
Coinffeine Software, Coinffeine Software APIs or Coinffeine Network information.
C. Use the Coinffeine Software for NonCommercial purposes.
So I don’t have a problem forking this and to provide it for free. The problem starts when we compensate LPC’s (with money) who use this software to provide liquidity. This would be a violation of the license I assume.
So I guess the best way would really be to get into contact with them and ask for an arrangement, either by providing them with an NBT plugin for their software, or to ask for a license (Nu would be the first DAO which bought a software license).
1 Like
What is bitsquare?
https://github.com/bitsquare/bitsquare
What is Bitsquare?
Bitsquare is a cross-platform desktop application that allows users
to trade national currency (dollars, euros, etc) for bitcoin without
relying on centralized exchanges such as Coinbase, Bitstamp or (the
former) Mt. Gox.
By running Bitsquare on their local machines, users form a
peer-to-peer network. Offers to buy and sell bitcoin are broadcast to
that network, and through the process of offering and accepting these
trades via the Bitsquare UI, a market is established.
There are no central points of control or failure in the Bitsquare
network. There are no trusted third parties. When two parties agree to
trade national currency for bitcoin, the bitcoin to be bought or sold is
held in escrow using multisignature transaction capabilities native to
the bitcoin protocol.
Because the national currency portion of any trade must be
transferred via traditional means such as a wire transfer, Bitsquare
incorporates first-class support for human arbitration to resolve any
errors or disputes.
1 Like
Bitsquare vs BCx : how do they compare?
Bitsquare aims to be a decentralized version of LocalBitcoins.com. They are focusing on peer to peer exchanges between traditional national currencies and Bitcoin. B&C Exchange only deals with blockchain based assets. There is no overlap in the target markets of B&C Exchange and Bitsquare.
2 Likes
Openbazaar Trade Protocol, according to their stack, it will allow currency exchange also:
https://blog.openbazaar.org/openbazaar-is-entering-a-new-phase-with-funding/
I’ve been watching OpenBazaar since the first public beta and I can’t stop thinking, that NuBits would be perfect for this!
1 Like
nubits would be perfect for a lot of things. they just don’t trust it yet!
2 Likes