Topic: *** Complete Guide on How to Create a New Alt Coin – Update 2018 *** - page 3. (Read 20943 times)

Hello

I tried to do this post in order to finally change PoW threshold to create blocks faster. Unfortunately I encountered a problem, after those 13 steps  I came up to run bitcoind command and all I got was core dumped error. like this :


It seems it won't accept my genesis hash and with bitcoin-cli command it says "can not connect to server 127.0.0.1:6332. I can't even add the node with its command .Here is my bitcoin.conf :

rpcuser=admin
rpcpassword=admin
server=1
rpcallowip=127.0.0.1
rpcport=6332
listen=1
gen = 1

I tried so hard but couldn't find out what i'm missing. I followed all the steps precisely.  I will be beyond grateful if some body take some time and answer my question.

No it's not checked, it's a social convention designed to reassure people that mining did not take place before the date (supposedly included) but it's not widely advertised as such. I still follow the rather elegant lead set by Mr Spread in Spreadcoin: use the latest Bitcoin block height and hash.

Cheers

Graham

ah thank i think fixed it....as i know i need do pztimes to news. why that important....or the chain is actually reading news timestamp?

Whatever. Althougn it's relatively harmless, the client's insistence on "phoning home" seemed to be puzzling some folks, so I thought I'd mention the source of it.

Cheers

Graham

need remove all or just port change

Also, remove the hard-coded Bitcoin-specific seeds from chainparamseeds.cpp. Otherwise the client will continue to attempt to connect with the Bitcoin network.

Cheers

Graham

chainparams.cpp:207: CMainParams::CMainParams(): Assertion `consensus.hashGenesisBlock == uint256S("0x000000002fe872d82f457a6016df5eeb432735a3291ae3b34d04dea89caa286a")' failed.
Aborted

return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTimeTx, nTimeBlock, nNonce, nBits, nVersion, genesisReward);
genesis = CreateGenesisBlock(1533211413, 0, 3823366493, 0x1d00ffff, 1, 0);

 checkpointData = (CCheckpointData) {
             boost::assign::map_list_of
            ( 0,     uint256S("0x00000000bcccd459d036a588d1008fce8da3754b205736f32ddfd35350e84c2d"))
         };

10. Remove dns seeds
In chainparams.cpp, remove lines start with “vSeeds.emplace_back”

Hi... Im having a problem connecting the nodes.

Altcoin-cli getblocktemplate returns

error code: -28
error message:
Loading wallet...

Any Idea which parts of the code should I look in to?

./minerd --user rpcuser --pass 111111 --url http://127.0.0.1:6332/ --threads 4 --coinbase-addr XQg3PmNxX9oEbxsymqtQHir6dkPpVPTJ6P --coinbase-sig "my test coins" -a sha256d -D

Yes, it is in a sense, but unless you want something POW coins similar to bitcoin, today most coins are created as ERC20 on Ethereum network.

How Can I do that?

Hi to all,

I'm so confused about that, is the mentioned stages in this post correct to do right now for creating a new Alt Coin?

Thanks

what is the reason the node has to connect to at least one peer node, in order for miner to run?

Oh, sorry I forgot to mention, in order to mine, the node has to connect to at least one peer node. So you need to run another instance of bitcoind and let it connect to the first node, like:

When sending between two clients, an error message occurs -

Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or endable -fallbackfee.

What does this mean, and how do I fix it?

Log extract below....

2018-06-01T22:48:18Z Fee Calculation: Fee:16600 Bytes:166 Needed:16600 Tgt:0 (requested 0) Reason:"PayTxFee set" Decay 0.00000: Estimation: (-1 - -1) nan% 0.0/(0.0 0 mem 0.0 out) Fail: (-1 - -1) nan% 0.0/(0.0 0 mem 0.0 out)
2018-06-01T22:48:23Z CommitTransaction:
CTransaction(hash=578d837469, ver=2, vin.size=1, vout.size=2, nLockTime=157)
    CTxIn(COutPoint(a3a8c8cd92, 0), scriptSig=160014a7419391b687baff02, nSequence=4294967293)
    CScriptWitness(3045022100887e2a97a954e5300a92ddb920256955112fe0977121b1fd9b9876b8144b246602200 f067e29f0a555a914034d13b9203390448832f43277f447c42404119e5c328001, 03a0415edb85fbdbf4b9ab3b759c3f660b8e87fe57b7dc852237a5a670ee1ba791)
    CTxOut(nValue=48.99983400, scriptPubKey=a914b4f55ca5f2a9a9a67c6dd4f8a2)
    CTxOut(nValue=1.00000000, scriptPubKey=a9147bcc4af60d02ea64d6ad3dcfc0)
2018-06-01T22:48:23Z keypool keep 1001
2018-06-01T22:48:23Z AddToWallet 578d837469ebf22fe9fff4a97ad87c11ee4453ade47c36c378c9941374d4f2e9  new
2018-06-01T22:48:23Z CommitTransaction(): Transaction cannot be broadcast immediately, no-witness-yet (code 64)
2018-06-01T22:49:51Z keypool added 1 keys (1 internal), size=2000 (1000 internal)