<p>As far as I remember MultiBit uses BIP37 bloomfilters to request data from full nodes. BIP37 was deprecated years ago and newer full nodes no longer provide this network service. According to <a href="https://luke.dashjr.org/programs/bitcoin/files/charts/services.html" rel="nofollow noreferrer">Luke-jr's data</a>, there are only 662 listening nodes that still provide the &quot;bloom&quot; network service. <a href="https://i.sstatic.net/xv9AR.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/xv9AR.png" alt="enter image description here" /></a></p>
<p>It may be slow, because your MultiBit client is having trouble finding a decent full node to serve it data. You might be able to sidestep this issue by importing the wallet into a different wallet, or by starting up your own full node of a sufficiently old version and connect your MultiBit to that directly.</p>

CC BY-SA 4.0
2022-06-28T16:23:32.487Z
2022-06-28T16:23:32.487Z
Murch
<p>Its downloading blocks of the blockchain and depending of speed it could takes 1-2 days</p>

CC BY-SA 4.0
2022-06-28T16:18:31.380Z
If I remember correctly, multibit was an SPV wallet using BIP37 bloom filters. If that's right, it's not downloading blocks.
Murch
CC BY-SA 4.0
2022-06-20T22:58:48.027Z
2022-06-20T22:58:48.027Z
KeychainX
<p>I'm trying to restore my old wallet which I had created on Multibit around 2016 and held a fraction of a bitcoin, as far as I can remember.</p>
<p>I have not touched the wallet for years until today when I found the Mnemonic words by chance. So I have downloaded the ancient <a href="https://download.cnet.com/MultiBit/3000-2078_4-75915646.html" rel="nofollow noreferrer">Multibit</a> client and restored the wallet. Now it is trying hard to synchronize the wallet. I have a decent laptop but the fan does not turn off while it is syncing. So I suppose there are lots of calculations involved. Though I have no clue what is that.  In any case, it is so damn slow: after several hours only 20% is synchronized. Why?</p>
<p>I'm wondering why does it take so long? How long should I expect for it to be fully synchronized? and how much disk space will it need?
I'm worried that it fills out laptop's 256GB SSD and still does not sync.</p>

<synchronization><multibit><bip37-bloom-filter>
How long does it take for Multibit to synchronize an old wallet?
blnks
# How long does it take for Multibit to synchronize an old wallet?

(Asked by: username_0 on 2021-12-03)

I'm trying to restore my old wallet which I had created on Multibit around 2016 and held a fraction of a bitcoin, as far as I can remember.

I have not touched the wallet for years until today when I found the Mnemonic words by chance. So I have downloaded the ancient [Multibit](https://download.cnet.com/MultiBit/3000-2078_4-75915646.html) client and restored the wallet. Now it is trying hard to synchronize the wallet. I have a decent laptop but the fan does not turn off while it is syncing. So I suppose there are lots of calculations involved. Though I have no clue what is that. In any case, it is so damn slow: after several hours only 20% is synchronized. Why?

I'm wondering why does it take so long? How long should I expect for it to be fully synchronized? and how much disk space will it need?
I'm worried that it fills out laptop's 256GB SSD and still does not sync.

**Tags:** synchronization, multibit, bip37-bloom-filter


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## 2 answers

### Answer by username_1 on 2022-06-28. Score: 1

As far as I remember MultiBit uses BIP37 bloomfilters to request data from full nodes. BIP37 was deprecated years ago and newer full nodes no longer provide this network service. According to [Luke-jr's data](https://luke.dashjr.org/programs/bitcoin/files/charts/services.html), there are only 662 listening nodes that still provide the "bloom" network service. [![enter image description here](https://i.sstatic.net/xv9AR.png)](https://i.sstatic.net/xv9AR.png)

It may be slow, because your MultiBit client is having trouble finding a decent full node to serve it data. You might be able to sidestep this issue by importing the wallet into a different wallet, or by starting up your own full node of a sufficiently old version and connect your MultiBit to that directly.


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### Answer by username_2 on 2022-06-20. Score: -2

Its downloading blocks of the blockchain and depending of speed it could takes 1-2 days

> **Comments:**
> **username_1**: If I remember correctly, multibit was an SPV wallet using BIP37 bloom filters. If that's right, it's not downloading blocks.  

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