[ANN] SpreadCoin | True Decentralization (No Pools) | Testing New Masternodes

[Rols]

Stopping mining now is a very bad idea. This miner seems to be kind and not using his power at full capacity, hashrate is about 8-9 MH/s, this is not something we never saw with CPU-only miners. It is the last chance to mine with your CPU, soon it will be impossible.

I started to work on an AMD miner, I haven't previously done anything like this, hard to say how long will it take.

And what about the hardfork witch slighly changed algo?
Miner included in wallet will include this change and private gpu miners will need to redesign their software.
Smart change in algo will sloooooooow down this redesign.

Small change to the algo implies small change to the miner. This may give us a few hours or a day at most.

well, a small change might be something that requires huge amounts of memory, or even to use diskspace in order to be calculated, which makes the use of GPU so slow that CPU are still usable for mining. (take a look at the momentum algorithm used on protoshares, miners are only 2 or 3 times faster on GPU).

I like your idea @girino. This coin was good because you could mine it with a cpu. There are already a lot of gpu coins and if the coin changes to gpu then the big gpu farms will hit it hard.

[mdsn]

GPU mining is barely fair.

[A-tM]

In fact, I also think, it would be better if SPR was CPU only coin. But it is absolutely not trivial to design algorithm, which will perform well on CPU and contrarily on GPU.
In the meantime, it is really necessary  to keap pace with "secret" GPU miners, to make powers equal and fair.

[hardroad]

[Mr. Spread]

I will send this message to everyone who posted logos in this thread.

You need to submit logo (or several logos if you want) before the end of this week. You can PM me or post it in this thread with a clear statement that this is the final variant of your logo. Your logo must be 512x512 png with alpha channel.

According to the rules it is also necessary to submit additional images. Almost no one makes these additional images so I will allow everyone to participate even without them but submitting them is a plus. You can also choose to use original images if your logo is using the same color scheme.

[Mr. Spread]

well, a small change might be something that requires huge amounts of memory, or even to use diskspace in order to be calculated, which makes the use of GPU so slow that CPU are still usable for mining. (take a look at the momentum algorithm used on protoshares, miners are only 2 or 3 times faster on GPU).

Requiring to use disc space is surely not a small change. Their whitepaper seems to be outdated, when reading it the first thing I thought was that you can use bloom filter to significantly reduce memory requirements. Some googling revealed that someone else already pointed to this and other vulnerabilities in the proposed scheme were found. They seem to fixed them to some extent but its not fast to find any definite information. This all will require time, I can't just copypaste some code into SpreadCoin without understanding it.

GPU miner is my priority now.

[casper77]

maybe stop this designer race about logo ? there were two very nice things, especially at start
maybe let's point mental power to other more important things ?

[Palmdetroit]

In fact, I also think, it would be better if SPR was CPU only coin. But it is absolutely not trivial to design algorithm, which will perform well on CPU and contrarily on GPU.
In the meantime, it is really necessary  to keap pace with "secret" GPU miners, to make powers equal and fair.

Then it's vulnerable to botnets.

[sid7039]

In fact, I also think, it would be better if SPR was CPU only coin. But it is absolutely not trivial to design algorithm, which will perform well on CPU and contrarily on GPU.
In the meantime, it is really necessary  to keap pace with "secret" GPU miners, to make powers equal and fair.

Then it's vulnerable to botnets.

Botnets prefer using pools/mines. SPR is quite secure from that - you need the whole blockchain downloaded and wallet started. Probably this is why currently there are no SPR botnets while SPR has a good price at the exchange.

I see good future for SPR as the best CPU coin. When it will become true GPU coin I will quit

[cointhinkers]

well, a small change might be something that requires huge amounts of memory, or even to use diskspace in order to be calculated, which makes the use of GPU so slow that CPU are still usable for mining. (take a look at the momentum algorithm used on protoshares, miners are only 2 or 3 times faster on GPU).

Requiring to use disc space is surely not a small change. Their whitepaper seems to be outdated, when reading it the first thing I thought was that you can use bloom filter to significantly reduce memory requirements. Some googling revealed that someone else already pointed to this and other vulnerabilities in the proposed scheme were found. They seem to fixed them to some extent but its not fast to find any definite information. This all will require time, I can't just copypaste some code into SpreadCoin without understanding it.

GPU miner is my priority now.

yes,I support you to develop AMD miner as the your top priority now.

[Mikolo]

In fact, I also think, it would be better if SPR was CPU only coin. But it is absolutely not trivial to design algorithm, which will perform well on CPU and contrarily on GPU.
In the meantime, it is really necessary  to keap pace with "secret" GPU miners, to make powers equal and fair.

Then it's vulnerable to botnets.

Botnets prefer using pools/mines. SPR is quite secure from that - you need the whole blockchain downloaded and wallet started. Probably this is why currently there are no SPR botnets while SPR has a good price at the exchange.

I see good future for SPR as the best CPU coin. When it will become true GPU coin I will quit

Well, modern computers have couple of free gigabytes of free space on their hard drives. I don't think blockchain is a big issue for botnets.

[sid7039]

In fact, I also think, it would be better if SPR was CPU only coin. But it is absolutely not trivial to design algorithm, which will perform well on CPU and contrarily on GPU.
In the meantime, it is really necessary  to keap pace with "secret" GPU miners, to make powers equal and fair.

Then it's vulnerable to botnets.

Botnets prefer using pools/mines. SPR is quite secure from that - you need the whole blockchain downloaded and wallet started. Probably this is why currently there are no SPR botnets while SPR has a good price at the exchange.

I see good future for SPR as the best CPU coin. When it will become true GPU coin I will quit

Well, modern computers have couple of free gigabytes of free space on their hard drives. I don't think blockchain is a big issue for botnets.

Agree. But I didn't write that it's a big issue but... botnets prefer small standalone miners. So blockchain and the whole wallet is not a big issue but it some kind of issue.
Other method of securing coin form botnets is when 32bit miners are much slower than 64bit miners what could depend on the coin algo. Of course it is't a big issue for botnets but again - it is some kind of issue.
The same than securing car from theft  - any car could be stolen but introduce many small issues (security methods/equipment) and it is much harder to steal, and sometimet even not worth it.

[girino]

In fact, I also think, it would be better if SPR was CPU only coin. But it is absolutely not trivial to design algorithm, which will perform well on CPU and contrarily on GPU.
In the meantime, it is really necessary  to keap pace with "secret" GPU miners, to make powers equal and fair.

Then it's vulnerable to botnets.

Botnets prefer using pools/mines. SPR is quite secure from that - you need the whole blockchain downloaded and wallet started. Probably this is why currently there are no SPR botnets while SPR has a good price at the exchange.

I see good future for SPR as the best CPU coin. When it will become true GPU coin I will quit

Well, modern computers have couple of free gigabytes of free space on their hard drives. I don't think blockchain is a big issue for botnets.

It is because it is easily detected. Botnets need to keep a Low footprint or they wont survive long.

[girino]

well, a small change might be something that requires huge amounts of memory, or even to use diskspace in order to be calculated, which makes the use of GPU so slow that CPU are still usable for mining. (take a look at the momentum algorithm used on protoshares, miners are only 2 or 3 times faster on GPU).

Requiring to use disc space is surely not a small change. Their whitepaper seems to be outdated, when reading it the first thing I thought was that you can use bloom filter to significantly reduce memory requirements. Some googling revealed that someone else already pointed to this and other vulnerabilities in the proposed scheme were found. They seem to fixed them to some extent but its not fast to find any definite information. This all will require time, I can't just copypaste some code into SpreadCoin without understanding it.

GPU miner is my priority now.

Bloom filter is actually slower than the currently used solutions, since false positives are quite costly. Some people have tried it already, and using a regular hashtable and ignoring collisions is way faster (up to twice as fast depending on the implementation). But still, due to the size of the search space (2^50) and the amount of data to be hashed (2^26), even bloom filters would use an amount of memory that would not fit in the local memory of  any GPU in the near future. So, even with a hashing data structure way more efficient than bloom filters (say, something twice as fast as the current implementation), we'd still have GPU and CPU mining ration bellow 5:1, which is quite acceptable. But then, momentum is not the only way to abuse the use of memory, there might be simpler ways to do so (preferably something that can be used with hashcash PoW, which makes for a much simpler transition). But then, i'm not the one deciding the priorities.

[Mikolo]

Guys, could you send some BTC to voting address for SpreadCoin?(https://c-cex.com/?id=vote) 0.181 and we will win the voting.

[Moon Follow Me]

new logo

http://s29.postimg.org/ifafkqxdv/spr.jpg

[girino]

Guys, could you send some BTC to voting address for SpreadCoin?(https://c-cex.com/?id=vote) 0.181 and we will win the voting.

Come on  guys. Only 81 votes left. Please open your wallets a little bit and  vote with your coins...

[Mikolo]

Now we on 2 place on C-CEX. Just sent my last satoshis.

[Susel]

Some more variants
https://i.imgur.com/QimyqzB.png

[Mr. Spread]

Looks like it would be possible to get around 500 kh/s out of amd r9 280x but I'm sure that by tuning some parameters you would be able to get more. Miner isn't ready yet, last missing piece is yet to be implemented, currently it generates invalid blocks. Will release it as soon as it is ready, probably 1-2 days.

Does anyone know how long it is until we start voting for logos?

In fact voting was supposed to start today. But there are just two submissions even though I contacted everyone who was posting logos in this thread, maybe I didn't make it clear that voting should start today and people think that there is more time.

I really need to sleep now, I was working on this miner for many hours today (and not only today), will decide tomorrow what to do with this situation, probably we should give people some more time to submit logos.