[ANN][XHD] Hidecoin Official thread | Double SHA-256 | NodeJS

[hidecoin2016]

Don't forget possible time warp exploit

What is time warp exploit?

https://litecoin.info/Time_warp_attack

https://bitcointalk.org/index.php?topic=608893.0

Read the sources:
https://github.com/cryptocurs/hidecoin/blob/master/lib/Block.js#L376
https://github.com/cryptocurs/hidecoin/blob/master/lib/Block.js#L445

Difficulty of the next block is based on blocks of last two hours.

[1714159232]

1714159232

[samspaces]

OK, there are several nodes sending valid blocks with higher timestamps:

02-02-2017 10:45:18.259 TID:F0977700 [Error] <TNetServerClient> Disconecting 89.249.254.45:50962 > Invalid remote timestamp. Difference:227 > 180

Thus making my blocks "invalid" through to too "old" time even though my clock is correct:

02-02-2017 10:44:59.041 TID:F0977700 [Error] <TPCOperationsComp> Invalid new block 59002: Invalid timestamp (New timestamp:1486028696 last timestamp (59001):1486028710)
02-02-2017 10:44:59.041 TID:F0977700 [Error] <TJSONRPCTcpIpClient> Sending Error JSON RPC id () : Error: Invalid timestamp (New timestamp:1486028696 last timestamp (59001):1486028710) payload:SUPRNOVAROXXXXXXXXXXXXRkmq4------- timestamp:1486028696 nonce:3038414114


What those guys exploit is an old bug which was fixed in bitcoin years ago. They send their blocks with a maximum "drift" ahead ..

Example:
It's now 11:30:00  and blockchain is at height 59000
Max Drift is 30 seconds

So they say they solved Block 59001 at 11:30:30 even though it's just 11:30:00 and now my pool finds the next block as 11:30:20 which is BEFORE 11:30:30 so the blockchain rejects the block and says "Nope, your clock is wrong (even though my clock is right!) and I reject your block because the block before was discovered later"...


We need the dev here to fix that..

[hidecoin2016]

Version 0.3.2 released

Fixed many bugs. Try it!

[samspaces]

Version 0.3.2 released

Fixed many bugs. Try it!

Ah, just switched to 0.3.0. Is that version still valid?

Time warp is no difficulty issue. Please read my previous post with a quote from the Pascalcoin thread.

[hidecoin2016]

Version 0.3.2 released

Fixed many bugs. Try it!

Ah, just switched to 0.3.0. Is that version still valid?

Time warp is no difficulty issue. Please read my previous post with a quote from the Pascalcoin thread.

Yes. 0.3.0 is still valid, but 0.3.2 is connecting much faster.

https://github.com/cryptocurs/hidecoin/blob/master/lib/Block.js#L437

Code:

if (lastBlockUnpacked && ((unpacked.time < lastBlockUnpacked.time - 60) || (unpacked.time > hours.now() + 60))) {
      lastValidationError = 'Wrong time: ' + lastBlockUnpacked.time + ', ' + unpacked.time + ', ' + hours.now()
      callback(false)
      return
}

Block with time greater than current time +1 minute will not pass the validation.

[btw50]

https://gyazo.com/0930c0fdc433bc3516bc315f037c243d

[samspaces]

Please bother to check your posts.

[btw50]

Please bother to check your posts.

at what hash rate you guys got ?

[hidecoin2016]

Version 0.3.3 released!

Now fee is calculating by the formula:
transaction_size_in_bytes * 3000 micoins

Update your config.js: set minerMinimalFee to 1000000
Read the instruction how to update to 0.3.3 - https://hidecoin.info/updating-to-version-0.3.3.html

Note that minimal fee in web wallet is 1 XHD. Use your local wallet to lower fee. We will fix this soon.

What about 'promiscuous mode' (F7) ?

Promiscuous mode is for fast validation. It is not recommended, since in this case the wallet does not check the validity of the blocks.

[hidecoin2016]

Version 0.3.4 released!

New RPC methods:
walletSendCoins(recipients, fee) - send coins to multiple recipients in one transaction.
walletCreateAddress() - create new address in wallet.

https://hidecoin.info/wallet/rpc

Using these methods you can accept payments on your website:
1. Create a forwarder:
walletCreateAddress
2. Wait for coins:
walletGetBalances
3. Send coins to basic address:
walletSendCoins

[EuroLine]

Version 0.3.4 released!

New RPC methods:
walletSendCoins(recipients, fee) - send coins to multiple recipients in one transaction.
walletCreateAddress() - create new address in wallet.

https://hidecoin.info/wallet/rpc

Using these methods you can accept payments on your website:
1. Create a forwarder:
walletCreateAddress
2. Wait for coins:
walletGetBalances
3. Send coins to basic address:
walletSendCoins

Very cool. Keep on working

[samspaces]

Nice upgrades.

From where do we make the rpc calls? In bitcoin, one uses the daemon. I tried 'rpcinfo' but that only returns errors.

[EuroLine]

Nice upgrades.

From where do we make the rpc calls? In bitcoin, one uses the daemon. I tried 'rpcinfo' but that only returns errors.

If you want to get something from this call, you need to add it to call list

[samspaces]

Nice upgrades.

From where do we make the rpc calls? In bitcoin, one uses the daemon. I tried 'rpcinfo' but that only returns errors.

If you want to get something from this call, you need to add it to call list

Let me rephrase the question.
How do I use the rpc commands.

[hidecoin2016]

[Let me rephrase the question.
How do I use the rpc commands.

Write your own program and use
RPC is for programmers.
If you want to send coins, use your local wallet.

[felixbrucker]

[Let me rephrase the question.
How do I use the rpc commands.

Write your own program and use
RPC is for programmers.
If you want to send coins, use your local wallet.

i guess what he meant is a proper doc, like this: https://hidecoin.info/wallet/rpc

[hidecoin2016]

[Let me rephrase the question.
How do I use the rpc commands.

Write your own program and use
RPC is for programmers.
If you want to send coins, use your local wallet.

i guess what he meant is a proper doc, like this: https://hidecoin.info/wallet/rpc

Or he meant the program like bitcoin-cli.

[samspaces]

Yup, I'm used to giving rpc commands to a daemon client.

[Trololoh]

@hidecoin2016
Could we please keep current solo cpu mining ?
Right now its fun to mine even for small users.
The moment pools with GPU or other high performance hardware is introduced it will be the usual small group who only think short term "mine and dump".
Switching to POS would be even better.

[hidecoin2016]

@hidecoin2016
Could we please keep current solo cpu mining ?
Right now its fun to mine even for small users.
The moment pools with GPU or other high performance hardware is introduced it will be the usual small group who only think short term "mine and dump".
Switching to POS would be even better.

I made RPC support not for pools but for exchange. This coin must have price or what is it for?