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1  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN]BYTOM: An interoperational protocol for diversified byte assets on: February 19, 2019, 11:56:22 PM
Hi BYTOM offcial, i have some ERC20 BTM tokens, can you help how can I swap those to the real mainnet BTM tokens?
2  Alternate cryptocurrencies / Altcoin Discussion / Re: ERC20 BTM on: February 19, 2019, 11:55:20 PM
Check this tutorial on how to swap your tokens : https://medium.com/@Bytom_Official/bytom-mainnet-migration-a4ca53d3de99

They didn't mention any deadline for the swap so I assume you still can. If you need assistance, you should reach out to them via ANN thread, Telegram and/or other social media accounts.

Accod. to the guide, I have to deposit the ERC20 to one of the exchanges, and the exchange will do the swap, but those mentioned exchanges have stopped support this swap.
I wonder why isn't there a non-exchange swap...
3  Alternate cryptocurrencies / Altcoin Discussion / ERC20 BTM on: February 18, 2019, 11:59:12 PM
I just found out there are some BTM in my ether wallet, but looks like bytom has lunched their own network for some time, is there anyway to swap those to the real BTM token? Thanks
4  Local / 中文 (Chinese) / 李笑来的收费群 on: October 08, 2018, 03:45:48 AM
李笑来声明从此退出出区块链投资,那之前进他的收费群的会员费退了没有,谁知道?
5  Bitcoin / Development & Technical Discussion / Bitcoin puzzle transactions? on: September 14, 2018, 03:24:25 PM
I came to the term as "Bitcoin puzzle transactions" which is referring to https://www.blockchain.com/btc/tx/08389f34c98c606322740c0be6a7125d9860bb8d5cb182c02f98461e5fa6cd15, at first glance it is just a normal transaction with lots of outputs. Why is it named so? What is the puzzle in it?
6  Bitcoin / Bitcoin Discussion / Re: A Girl Survived with 0.21 Bitcoins for 21 Days, how do you think of it? on: September 14, 2018, 10:34:09 AM
  helping her out like reselling products she needed in exchange for her Bitcoins

I would not call that living solely on bitcoins, nearly none of the merchants accept bitcoins there.
If she gets a crypto backed card with visa membership it would be a lot easier to live a normal life.
7  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: July 10, 2018, 08:12:27 AM
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

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?

Just follow the guide Smiley
What specifically do you want to do?
8  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: June 29, 2018, 01:25:55 PM
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

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.
9  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: June 29, 2018, 01:24:30 PM

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:


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

Mined blocks needs to be broadcast and confirmed by the network, with only one node your blocks cannot be confirmed. Also this check is hard wired in bitcoin's source code, so it's a must-met condition.
10  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: May 27, 2018, 08:10:39 AM
Thanks a lot.

I have set up and began mining, but have not mined Block 1 several hours.

Should I modify the difficulty of POW ? and how to ?

Thanks in advance.




The debug.log saying,

......
2018-05-26 23:46:14 ERROR: ProcessNewBlock: AcceptBlock FAILED
2018-05-26 23:46:14 ERROR: ProcessNewBlock: AcceptBlock FAILED
2018-05-26 23:46:14 ERROR: ProcessNewBlock: AcceptBlock FAILED
2018-05-26 23:46:14 ERROR: ProcessNewBlock: AcceptBlock FAILED
2018-05-26 23:46:14 ERROR: ProcessNewBlock: AcceptBlock FAILED
2018-05-26 23:46:14 ERROR: ProcessNewBlock: AcceptBlock FAILED
......


Is there something wrong?



Hi, what's your command line to run bitcoind and the miner?
11  Bitcoin / Development & Technical Discussion / Re: Daemon's functions, API, notify, etc is same at other coins? on: May 15, 2018, 12:56:06 AM
So bitcoin's API, commands, daemon feature is same at all other alt-coins?

And eth ERC20 token does not have any source github, API, commands, daemon, right?


No, each coins have their own features and APIs, you have to refer to that specific coin's documentation to find out.

ERC20 is a protocol running on top of Ethereum network, you can find links to github and docs here https://ethereum.org/.
12  Bitcoin / Development & Technical Discussion / Re: JSON_RPC API - Move method on: May 13, 2018, 01:24:34 PM
As the documentation suggests, if double encryption is enabled, there are two passwords, the first one is the rpcpassword you pass in when calling the rpc, pass it as the command line argument to "-rpcpassword", and the second password is your set with "walletpassphrase" api call. That means before calling any api that requires second password, call "walletpassphrase <password> <timeout in seconds>" to unlock the wallet.
13  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: May 05, 2018, 02:07:02 PM
Thank you for your reply.

I do generate my own genesis block. It seems that it is just keeping downloading.

It would be a lot helpful if you could run a git diff on your workspace and paste the change you have made, so that we can identify the problem.

Thank you very much for your reply.

Those are the changes I made:
https://github.com/zhq422194011/bitcoin/commit/e0b0d5c9b4be209cf640cf6e8ae29bf1525c58da

My bitcoin.conf is:
Code:
server=1
gen=1
rpcbind=0.0.0.0
rpcuser=rpcuser
rpcpassword=111111
rpcallowip=127.0.0.1
rpcallowip=0.0.0.0/0
listen=1

I run the following two bitcoinds:

Code:
sudo ~/bitcoin/src/bitcoind -addnode=127.0.0.1:9332 -port=8963 -rpcport=8962 -debug=rpc -dns=0 -dnsseed=0

sudo ~/bitcoin/src/bitcoind -datadir=$HOME/.bitcoin2 -addnode=127.0.0.1:8962 -port=9333 -rpcport=9332 -debug=rpc -dns=0 -dnsseed=0

When I run ./bitcoin-cli getblocktemplate, I got:
Code:
error code: -10
error message:
Bitcoin is downloading blocks...



The code change looks right, for the first node, don't use -addnode, becuase the second node hasn't started yet, also add "-connect=0 -listen=1 -maxtipage=$((24*60*60*5000))" to it, for second node, use addnode to add the first node.
14  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: May 04, 2018, 12:29:09 AM
Thank you for your reply.

I do generate my own genesis block. It seems that it is just keeping downloading.

It would be a lot helpful if you could run a git diff on your workspace and paste the change you have made, so that we can identify the problem.
15  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: May 03, 2018, 01:02:46 PM
Thank you very much for your reply.

One more question is that I do not know why it is keeping "Bitcoin is downloading blocks..."

Because of this, the getblocktemplate will not work.

Did you generate your own genesis block? If not, try follow step 13, set max tip age to a very large period of time.
16  Bitcoin / Development & Technical Discussion / Re: Wallet address's account needed? To manage users. on: May 03, 2018, 07:50:05 AM
If there is one coin daemon running, and at that same server, users will join, then issueing addresses to each users.

Then if I want the users can send & receive to/from his address, when I issue address to user, should I attach account string value to that issues address?



Account in bitcoin daemon is more like a lable string, address is enough to send and receive coins. But if you want to set a new account for each user for management purpose, you can do that using bitcoind's rpc, refer to getaccountaddress api.

Code:
getaccountaddress

Returns the current bitcoin address for receiving payments to this account. If <account> does not exist, it will be created along with an associated new address that will be returned.
17  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: May 03, 2018, 07:40:25 AM
After set dns to false, you will need to delete previously saved peer database, remove peers.dat file from ~/.bitcoin direcotry, assuming you are on linux.

To run multiple instances of bitcoind, besides specifying different port number, you need to use different data directory too, add -datadir=/path/to/another/bitcoinddatadir to your other bitcoind command line.
18  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: April 29, 2018, 09:18:35 PM
Thank you very much for your reply.

Run ./bitcoin-cli getblocktemplate , I got following:
error code: -9
error message:
Bitcoin is not connected!

In debug log:

2018-04-29 14:41:29 Bitcoin Core version v0.16.0.0-9ea62a3dc-dirty (release build)



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:

Code:
bitcoind -addnode=127.0.0.1:6333 -port=9333 -rpcport=9332 .... other arguments

replace 6333 with your first node's port.

After this, try restart the miner again.

Also from the debug.log you posted, it looks you didn't remove the dns seeds servers, that's ok, you can add "-dns=0 -dnsseed=0" to bitcoind command line arguments to disable them. If you are running your private network, there is no point to connect to public bitcoin nodes.
19  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: April 29, 2018, 01:57:04 PM
Hi, thank you very much for your reply.

I am now using the 0.16 version and I used the following:

./minerd --user rpcuser --pass 111111 --url http://127.0.0.1:8961/ --threads 4 --coinbase-addr XQg3PmNxX9oEbxsymqtQHir6dkPpVPTJ6P --coinbase-sig "my test coins" -a sha256d -D

My bitcoin.conf is:

server=1
gen=0
rpcuser=rpcuser
rpcpassword=111111
rpcallowip=127.0.0.1
rpcport=8961
listen=1

However, I still get the same error:

[2018-04-29 03:21:00] Binding thread 0 to cpu 0
[2018-04-29 03:21:00] 4 miner threads started, using 'sha256d' algorithm.
[2018-04-29 03:21:00] Binding thread 3 to cpu 1
[2018-04-29 03:21:00] Binding thread 2 to cpu 0
[2018-04-29 03:21:00] Binding thread 1 to cpu 1
[2018-04-29 03:21:00] HTTP request failed: The requested URL returned error: 500 Internal Server Error
[2018-04-29 03:21:00] json_rpc_call failed, retry after 30 seconds
[2018-04-29 03:21:30] HTTP request failed: The requested URL returned error: 500 Internal Server Error
[2018-04-29 03:21:30] json_rpc_call failed, retry after 30 seconds
[2018-04-29 03:22:00] HTTP request failed: The requested URL returned error: 500 Internal Server Error
[2018-04-29 03:22:00] json_rpc_call failed, retry after 30 seconds
[2018-04-29 03:22:30] HTTP request failed: The requested URL returned error: 500 Internal Server Error

Can you run "bitcoin-cli getblocktemplate" and show its output? Also show the relevant part of debug.log in .bitcoin dir.
20  Alternate cryptocurrencies / Altcoin Discussion / Re: *** Complete Guide on How to Create a New Alt Coin Update 2018 *** on: April 29, 2018, 08:49:28 AM
Hi, Thank you very much for your post. It helps me a lot.
Now I encountered a problem. When I try CPU Mining, it shows a 500 Internal Server Error. How to solve it?

[2018-04-28 23:39:50] Binding thread 0 to cpu 0
[2018-04-28 23:39:50] Binding thread 1 to cpu 1
[2018-04-28 23:39:50] 2 miner threads started, using 'scrypt' algorithm.
[2018-04-28 23:39:50] HTTP request failed: The requested URL returned error: 500 Internal Server Error
[2018-04-28 23:39:50] json_rpc_call failed, retry after 30 seconds

My Bitcoin.conf is:

server=1
gen=0
rpcuser=rpcuser
rpcpassword=111111
rpcallowip=127.0.0.1
rpcport=8962
listen=1

Hi, you need to specify sha256d as mining algorithm, you were using scrypt instead. Try add "-a sha256d" to cpuminer command line.
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