<p>You cannot.</p>
<p>There have been both changes to the P2P protocol that prevent this, and changes to the way that nodes are discovered.</p>
<p>The method which 0.1.0 discovered new nodes was by joining the #bitcoin channel on freenode. Your IP address would be encoded in a certain way and that would be the IRC nick for your node. However this has long since been removed from the Bitcoin software and any node that does connect to the #bitcoin channel will be kicked from it (the encoding is unique and identifiable).</p>
<p>Since 0.1.0 can't connect to the IRC channel to discover new nodes, it is unable to learn about nodes that it can connect to.</p>
<p>Furthermore, the P2P protocol has changed since 0.1.0 was released and thus 0.1.0 is unable to communicate with modern nodes. This change was to add a checksum to the end of the P2P message header. Messages without this checksum will be rejected by modern nodes.</p>
<p>Lastly, 0.1.0 is too old so modern nodes won't connect to it. They have a minimum supported protocol version number, and 0.1.0's protocol version number is far too low. So even if you could get it to connect, the connection would be dropped.</p>
<hr />
<p>The way to deal with the node discovery issue is to manually modify the peers.dat file to have the IP address and port of nodes that you want to connect to.</p>
<p>The only way to deal with the P2P protocol changes (checksum and version number) is to have a shim that sits in between all of your connections and modifies the P2P messages to work with modern node software. Or you can connect to a modified node which can deal with 0.1.0 traffic.</p>
<hr />
<p>Even if you are able to connect to the Bitcoin network with 0.1.0, you won't be able to mine anything as the CPU mining is no longer viable, and the CPU miner implementation in 0.1.0 is not efficient. You also wouldn't be able to even sync as it syncs too slowly. Blocks will be found faster than it is able to process them. It will run into additional issues when it receives a new block before it is able to sync the blockchain that precedes that block.</p>

CC BY-SA 4.0
2020-06-29T22:53:18.023Z
Okay. What version and date implemented these changes? Also, Does the modified version contain all block and transaction data from day one of bitcoin because when I installed the latest version, it started around, I believe, 2012 (Wheres all the previous data (2009-2011), what happened to it (Wallets, Transactions, Keys, etc), what became of it?)
ImLostPleaseHelpThx
CC BY-SA 4.0
2020-06-29T22:53:35.340Z
...also, how do you create this shim?
ImLostPleaseHelpThx
CC BY-SA 4.0
2020-06-30T01:06:41.103Z
0.2.9 introduced the checksum in May 2010. 0.3.18 is the oldest version allowed by modern nodes. All versions will attempt to download the blockchain from genesis. The software does not come with the data from day one, it all gets downloaded from other nodes on the network. If it did not begin from the genesis block, then you already had some of the blockchain already downloaded. The shim needs to be a program that you write yourself.
Ava Chow
CC BY-SA 4.0
2020-06-30T01:21:21.320Z
Do you know when version 0.3.18 was implemented (Doesn't seem far off from May 2010). I do have some backup files from my older drives loaded. I wonder if it was found while downloading. I believe, on my other drives, I have a wallet.bat file (Not sure but remember seeing it when reviewing my data). Okay, the implementation date of 0.3.18, will determine on whether I attempt to write a shim. Currently, I'm using version 17 and 20, and I want to use the oldest possible version to recreate the original environment from a decade ago. I'll search for 0.3.18 version, now. Thanks!
ImLostPleaseHelpThx
CC BY-SA 4.0
2020-06-30T01:26:42.960Z
All version back to 2011-06-05 Bitcoin version 0.3.22 released (to new) may be found here...  https://bitcoin.org/en/version-history, and I have found that that version 0.3.18 was released on 8 December 2010 (perfect), posted release here... https://nakamotostudies.org/emails/bitcoin-list-bitcoin-0-3-18-is-released/ released in 2010 and may be downloaded here https://sourceforge.net/p/bitcoin/mailman/message/26722835/. I'll download and check if it works, now. And follow-up with a resolution or technical question if needed. Thanks!!!!! 
ImLostPleaseHelpThx
CC BY-SA 4.0
2020-06-30T01:43:45.940Z
The previous link to download 0.3.18 forwards to https://github.com/bitcoin/bitcoin as of 5 June 2015. And version 0.3.19 was released on 13 December 2010 http://satoshinakamoto.me/2010/12/08/bitcoin-list-bitcoin-0-3-18-is-released/ (I'll go with that one), also found here, https://github.com/bitcoin/bitcoin .
ImLostPleaseHelpThx
CC BY-SA 4.0
2020-06-30T02:06:11.933Z
Older versions are no longer available because they are insecure and no longer able to sync the blockchain. 0.1.0 is only available because some people have decided that it has historical significance and re-uploaded copies that they had downloaded when it was available. Why are you trying to use such old versions of Bitcoin?
Ava Chow
CC BY-SA 4.0
2020-06-30T15:33:19.467Z
Because it has historical significance to the operation of my older account that I'm trying to recover and because I'm learning again, and since older software is also much easier to learn, work, and to understand in relation to all revisions through the years. Also, if bitcoin denies the operations of older versions, it denies any historical significance it may hold. Does Microsoft deny installation of its previous versions of Windows? No. Because its needed to operate older versions of different associated files or software (off topic: I read a white with your name in it. Interesting paper)?
ImLostPleaseHelpThx
CC BY-SA 4.0
2020-06-30T15:56:35.157Z
Older Bitcoin software provide far less access to the inner workings of Bitcoin. There are few/no RPCs (depending on how old you go) and there are newer RPCs that provide better access to internal structures so that you can inspect and learn from them. Older does not necessarily mean better for learning. Older software is also not necessary to access old files. Bitcoin largely maintains backwards compatibility with the data files produced by old software so you should be able to open wallets and some existing blockchain data in a new software.
Ava Chow
CC BY-SA 4.0
2020-06-29T21:18:31.427Z
2020-06-29T21:18:31.427Z
Ava Chow
<p>My Bitcoin V 0.1 says, &quot;not connected&quot; when I try to generate coins. I have ensured the port is connected through the firewall. Also, I have read that V 0.1.3 corrected this problem. However, I am trying to connect without installing V 0.1.3.</p>
<p>Does anyone know how to correct a V 0.1 &quot;not connected&quot;?</p>

<bitcoind><bitcoin-core-development><bitcoin-cli><connection><bitcoin-qt-setup>
Bitcoin V0.1 Not Connected
ImLostPleaseHelpThx
# Bitcoin V0.1 Not Connected

(Asked by: username_0 on 2020-06-29)

My Bitcoin V 0.1 says, "not connected" when I try to generate coins. I have ensured the port is connected through the firewall. Also, I have read that V 0.1.3 corrected this problem. However, I am trying to connect without installing V 0.1.3.

Does anyone know how to correct a V 0.1 "not connected"?

**Tags:** bitcoind, bitcoin-core-development, bitcoin-cli, connection, bitcoin-qt-setup


---

## 1 answers

### Answer by username_1 on 2020-06-29. Score: 4 | Accepted answer

You cannot.

There have been both changes to the P2P protocol that prevent this, and changes to the way that nodes are discovered.

The method which 0.1.0 discovered new nodes was by joining the #bitcoin channel on freenode. Your IP address would be encoded in a certain way and that would be the IRC nick for your node. However this has long since been removed from the Bitcoin software and any node that does connect to the #bitcoin channel will be kicked from it (the encoding is unique and identifiable).

Since 0.1.0 can't connect to the IRC channel to discover new nodes, it is unable to learn about nodes that it can connect to.

Furthermore, the P2P protocol has changed since 0.1.0 was released and thus 0.1.0 is unable to communicate with modern nodes. This change was to add a checksum to the end of the P2P message header. Messages without this checksum will be rejected by modern nodes.

Lastly, 0.1.0 is too old so modern nodes won't connect to it. They have a minimum supported protocol version number, and 0.1.0's protocol version number is far too low. So even if you could get it to connect, the connection would be dropped.

---

The way to deal with the node discovery issue is to manually modify the peers.dat file to have the IP address and port of nodes that you want to connect to.

The only way to deal with the P2P protocol changes (checksum and version number) is to have a shim that sits in between all of your connections and modifies the P2P messages to work with modern node software. Or you can connect to a modified node which can deal with 0.1.0 traffic.

---

Even if you are able to connect to the Bitcoin network with 0.1.0, you won't be able to mine anything as the CPU mining is no longer viable, and the CPU miner implementation in 0.1.0 is not efficient. You also wouldn't be able to even sync as it syncs too slowly. Blocks will be found faster than it is able to process them. It will run into additional issues when it receives a new block before it is able to sync the blockchain that precedes that block.

> **Comments:**
> **username_0**: Okay. What version and date implemented these changes? Also, Does the modified version contain all block and transaction data from day one of bitcoin because when I installed the latest version, it started around, I believe, 2012 (Wheres all the previous data (2009-2011), what happened to it (Wallets, Transactions, Keys, etc), what became of it?)  
> **username_0**: ...also, how do you create this shim?  
> **username_1**: 0.2.9 introduced the checksum in May 2010. 0.3.18 is the oldest version allowed by modern nodes. All versions will attempt to download the blockchain from genesis. The software does not come with the data from day one, it all gets downloaded from other nodes on the network. If it did not begin from the genesis block, then you already had some of the blockchain already downloaded. The shim needs to be a program that you write yourself.  
> **username_0**: Do you know when version 0.3.18 was implemented (Doesn't seem far off from May 2010). I do have some backup files from my older drives loaded. I wonder if it was found while downloading. I believe, on my other drives, I have a wallet.bat file (Not sure but remember seeing it when reviewing my data). Okay, the implementation date of 0.3.18, will determine on whether I attempt to write a shim. Currently, I'm using version 17 and 20, and I want to use the oldest possible version to recreate the original environment from a decade ago. I'll search for 0.3.18 version, now. Thanks!  
> **username_0**: All version back to 2011-06-05 Bitcoin version 0.3.22 released (to new) may be found here...  https://bitcoin.org/en/version-history, and I have found that that version 0.3.18 was released on 8 December 2010 (perfect), posted release here... https://nakamotostudies.org/emails/bitcoin-list-bitcoin-0-3-18-is-released/ released in 2010 and may be downloaded here https://sourceforge.net/p/bitcoin/mailman/message/26722835/. I'll download and check if it works, now. And follow-up with a resolution or technical question if needed. Thanks!!!!!   
> **username_0**: The previous link to download 0.3.18 forwards to https://github.com/bitcoin/bitcoin as of 5 June 2015. And version 0.3.19 was released on 13 December 2010 http://satoshinakamoto.me/2010/12/08/bitcoin-list-bitcoin-0-3-18-is-released/ (I'll go with that one), also found here, https://github.com/bitcoin/bitcoin .  
> **username_1**: Older versions are no longer available because they are insecure and no longer able to sync the blockchain. 0.1.0 is only available because some people have decided that it has historical significance and re-uploaded copies that they had downloaded when it was available. Why are you trying to use such old versions of Bitcoin?  
> **username_0**: Because it has historical significance to the operation of my older account that I'm trying to recover and because I'm learning again, and since older software is also much easier to learn, work, and to understand in relation to all revisions through the years. Also, if bitcoin denies the operations of older versions, it denies any historical significance it may hold. Does Microsoft deny installation of its previous versions of Windows? No. Because its needed to operate older versions of different associated files or software (off topic: I read a white with your name in it. Interesting paper)?  
> **username_1**: Older Bitcoin software provide far less access to the inner workings of Bitcoin. There are few/no RPCs (depending on how old you go) and there are newer RPCs that provide better access to internal structures so that you can inspect and learn from them. Older does not necessarily mean better for learning. Older software is also not necessary to access old files. Bitcoin largely maintains backwards compatibility with the data files produced by old software so you should be able to open wallets and some existing blockchain data in a new software.  

---

