Topic: [SKY] Skycoin Launch Announcement - page 171. (Read 381579 times)

It's better
Dev make a ninja ipo like nxt, guaranteed success!
Launch at Cryptocointalk not here

I hope that many like me have been watching it for the past 4 months... Just not commenting.

4 mouthes passed, just 30 pages about skycoin. it seems that few person care about the coin.

Development Update:

The new wire protocol is more work than expected. Instead of delaying launch by two weeks, to address these issues I am hacking together something that will get the network running.

Multiple software components need to be be refactored.
- Daemon needs to be extended to support multiple connection pools with independent peer exchange and using a common listening socket
- gnet needs to be modified to support an introduction packet
- gnet packet handling callbacks need to be embedded in the gnet object instead of globals, to allow multiple gnet instances in the same application
- daemon DHT functionality for peer bootstrap needs to be abstracted to allow for retrieving bootstrap peers for multiple hashes.
- the hashchain replicator wire protocol needs to be designed and implemented
- the blob and hashchain replicators need to be abstracted on top of the new connection pool

Update:

The new wire protocol is now in its own repo as a library. github: https://github.com/skycoin/sync

run.go is a simple example of spawning two instances and replicating blob data between the instances. Writing tech demo for synchronization of a cryptographically authenticated blob data and running a webserver off the synchronized data.

Thanks! I ended up on the Ethereum installation instructions doing a google search for "ubuntu libgmp" when it wouldn't install with "sudo apt-get install libgmp" and just installed all the dependencies listed there. Ethereum prefers Ubuntu 13.04 over 12.04, maybe Skycoin does as well. For some reason, Ubuntu gmp is under libgmp-dev instead of libgmp.

I want to migrate over to arch linux for Beaglebone and other SoC devices (R-Pi isn't quite strong enough for the entire stack of personal cloud/self hosting of Indiebox and the wish list at http://p2pconnects.us/2013/12/30/assembling-my-personal-cloud/), thought Ubuntu would be more complete for a quick and easy install - think I might as well have went with arch linux since that is the goal for a low powered, always on device with network access.

Is there any Skycoin test coin available and a test net? My client came up with a bunch of addresses but no transactions. I'm not sure what I would use as a receiving address. Any docs on how to use?

Development Update:

This is overview of the Skycoin checkpoint system. The checkpoint system addresses the exponential growth of the blockchain, by keeping the data required to run a full client to less than one gigabyte. This was a core design objective for Skycoin, to enable usage on mobile phones.

The checkpoint system allows users to check balances and do transactions without downloading the full block chain. The client only requires a copy of the unspent output set and the blocks since the unspent output set to parse the next block.

1. Every 16384th block will be referred to as a "checkpoint block"
2. Every 16384 blocks (every 68 hours), each obelisk node will publish and sign
- the SHA256 merkle tree hash of the unspent output set
- the SHA256 merkle tree hash of the blocks since the last snapshot
3. Upon reaching a checkpoint block, each client will verify its state against the checkpoints published by the obelisk nodes it is subscribed to
4. The checkpoint at block 2*16384 is for blocks 0 to block 16384.
5. If snapshots are enabled, clients will download the UxSet and blocks since the last checkpoint block. The client will be fully functional at this point and then will begin to download the history since the first block.
6. Verification against Checkpoint Blocks will be enabled by default, but use of snapshots will be disabled for security unless explicitly enabled.
7. High security applications such as exchanges are recommended to disable snapshots and parse the blockchain from the genesis block.
8. If there is a discrepancy between the checkpoint hashes for the nodes a user is subscribed to, the user will be alerted and additionally security measures (such as disabling coin sends) may be put in place until the situation is resolved.

Unspent Output Set Hash:
- Additionally, for each block the unspent output set is hashed and the first 4 bytes of this hash are included in each block. This is a checksum hash and is designed to be constant time for addition/removal of outputs and not designed to be a cryptographic hash. This hash detects non-determinism and bugs in the unspent output state before they can cause blockchain forks.

Skycoin Blockchain Security:

We have made progress on the design of Obelisk. We are evaluating Obelisk under an attack scenario where 90% of the nodes are malicious. We have determined that a severe sibyl attack may slow down block consensus or slow down execution of specific transactions but cannot fork the blockchain earlier that a few blocks into the past (no 51% attack, no double spending). The success rate of blockchain forks in Skycoin, decreases exponentially quickly in the number of confirmations a block has (where as Bitcoin attack difficulty increases approximately linearly in number of confirmations).

An attacker who dominants the Bitcoin hash rate can mint blocks with 0 transactions (slow down network) and 51% attack (revert previously executed transactions). Skycoin does not use mining and an attacker using a colluding majority of Skycoin Obelisk nodes is only able to slow network consensus and transaction processing, but cannot revert previous transactions.

＋1

I keep getting the following error from ./run.sh -h , from github/skycoin/skycoin file secp256k1-g



https://i.imgur.com/fMHdTsH.jpg

Indeed.

It is better that he focuses on the software.
No point on investing in a new crypto if it's not working.

Too many scams recently. SkyCoin must be disciplined.

Development Update:
- wire protocol almost done
- deterministic wallets RPC almost done (in branch)
- fixing wallet GUI to match new RPC
- windows, OSX and linux build scripts are done

We are working towards a launch where the coin is trading as soon as possible. After launch, there is still work to do.

I assume that's a question about mining. There is no mining in SkyCoin. Its proof of stake based, not proof of work based. If I understand correctly, that hash function is used to generate addresses in a deterministic wallet: its not part of the coin protocol itself, nor do you have any reason to care about its performance unless you are trying to generate lots of addresses for deterministic wallets.

will wait for the mining somecoin.

oh dear not another scam!

Any chance of OSX binaries?  I would be happy to test and use it on OSX.  I'm excited for Skycoin.

Thank you

+1. making progress!

Yes. We should have windows binaries.

Notes:
- If you want to run from source, linux is much easier than windows, because windows requires dealing with mingw configuration.
- When golang 1.3 comes out, we will be cross compiling the windows binaries from linux directly
- We are looking into using docker for deployment and testing
- 64-bit is highly recommended
- some people are getting errors because golang is not detecting changes to imported modules correctly. ./compile/clean-static-libs.sh fixes this problem by clearing out the cache

Will these run on Windows, or can they run on linux vps?

great!