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Showing 17 of 17 results by JuxtaposeLife
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Board Bitcoin Discussion
Re: How many Bitcoins do the active bitcointalk forum members typically have?
by
JuxtaposeLife
on 26/07/2025, 16:22:17 UTC
This is like going on an agriculture forum and asking how many cattle the typical cattle farmer in a given country has... some have scaled, some have not, some have been involved longer than others. You're going to get a wide distribution...
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Topic
Board Bitcoin Discussion
Re: 80k Bitcoin solved by Galaxy
by
JuxtaposeLife
on 26/07/2025, 16:19:08 UTC
Buying USD with BTC is an interesting choice, not one I would make... but maybe the entity needed it to actually get a thing.

I would think borrowing against it to get the thing that is inflating, irrational and not consistent (aka USD) would be the wiser move...
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Topic
Board Bitcoin Discussion
Re: Bitcoin ETFs: Are They Actually Good for Decentralization, Long Term?
by
JuxtaposeLife
on 09/07/2025, 03:07:43 UTC
an ETF is an IOU... in that regard, it's more like fiat than true ownership. Sure, it comes with a 'promise' it won't be rehypothecated (printed), but the point remains, you're not in posession. Just like the value in fiat isn't really yours if it can be idebased/inflated without your concent.

In this regard, ironically... ETFs are sort of the institutions trojan horse into BTC... as BTC is a trojan horse into the traditional finance industry. The less people that use ETFs the better... but people are going to do "the easy" path, and find out the hard way. What's actually ownership and what isn't. At least it's adoption, but I don't think it's "healthy" long term. It could actually do a lot of damage, if a huge pile of BTC was lost or stolen... and govt stepped in to reconcile the way they often do (taxing everyone to make sure those with a lot don't lose it).
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Board Bitcoin Discussion
Re: Quantum Computing and Satoshi's Bitcoins
by
JuxtaposeLife
on 09/07/2025, 02:55:47 UTC
Doesn't really answer your question, but first thing is that quantum achievements at the level of cracking P2PK addresses would have far more valuable, and obvious targets before it ever got to the point of coming for Satoshi addresses. Or put another way, though you're thinking "how will Quantum impact BTC"... you should instead be much more worried about "how Quantum will impact the world" because that second question will hit way sooner, and truly be your canary.

That said, you're right lots of discussions have come on this topic. My maybe not so popular opinion is that when the day comes that quantum resistance is required for the BTC network, there will likely be a window of adoption that will be broadcast widely. It'll be common knowledge, if you don't adopt (move) to a quantum reslient address by (insert some date here) then you are agreeing for the network to lock down (burn, what have you) the BTC at the addresses that don't adopt by said date.

This is just one of many potential ways to address this. It's probably not the best. The network will decide, what is best... running a node is your way to vote.
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Topic
Board Development & Technical Discussion
Re: Playing with analytics
by
JuxtaposeLife
on 15/02/2025, 16:31:02 UTC
I did a print out of the combined total of all utxos where is_spent = false and I got back
20009210.72379106 ...

which is close, but higher than the total supply in circulation (around 19.82m)

I'm hoping the difference has something to do with a certain script type not strigger the is_spent variable I track... I'm also aware that the node maintains a current list of all utxos, so maybe my best bet is to do a comparison of utxo ID fields?

Curious if anything stands out to anyone on this: Here is a print out of amounts summed by script_type...

Code:
      script_type      |    ct    |   total_amount
-----------------------+----------+------------------
 pubkeyhash            | 52505234 | 6812722.99744588
 witness_v0_keyhash    | 49812368 | 5950961.07712848
 scripthash            | 14085469 | 4212919.07096102
 pubkey                |    45304 | 1720781.42621185
 witness_v0_scripthash |  1589794 | 1161322.78037109
 witness_v1_taproot    | 58752893 |  147776.69085131
 nonstandard           |   187875 |    2627.60490072
 multisig              |  1872416 |      57.31497578
 nulldata              |   143801 |      41.75518261
 witness_unknown       |      199 |       0.00576232

Not worth doing more dust accounting until I get this table synced with the current chain...
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Board Development & Technical Discussion
Re: Playing with analytics
by
JuxtaposeLife
on 14/02/2025, 04:00:50 UTC
Since you don't mention when those UTXO dust created, i would speculate most of them are created by Ordinals. See https://bitcoin.stackexchange.com/a/118262.

I'll need to do some more digging into what exactly Ordinals are. I'm still cleaning up the data. I discovered that about 140m of my utxos seem to be OP_RETURN and have an amount of 0.00000000 but are marked as unspent (or rather, were never spent after being created). I'm guessing these were just place markers for people to add comments to the chain? I ordered these by script type and 99.9% of them are of type nulldata.

I'm trying to decide if I should extract these into a separate table to maintain the ingerity (in case in the future I want to distinguish them for some other purpose), or simply mark them as false for the is_spent column to get them out of the way when I do queries on spendable utxos. I suppose I could just exclude them by the nulldata association? Thinking out loud here...


OP can verify this data by analysing the dust accumulation over the time and see if it's spikes exactly when the ordinals started spamming the network.

The other contributors are some wallets which doesn't allow coin control lead to created unnecessary dust amount into the change address.

Good idea. Once I can run some more efficient queries, I'll look at clustering them by data/time.

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Board Development & Technical Discussion
Merits 7 from 3 users
Topic OP
Playing with analytics
by
JuxtaposeLife
on 13/02/2025, 03:19:20 UTC
⭐ Merited by pooya87 (4) ,ABCbits (2) ,Findingnemo (1)
Spent the last few months exploring the raw data after setting up a node, and constructing a relational database with a goal of tinkering with analytics -- exploring mostly. My database is way too large (almost 4TB - a lot of that indexing) so I need to work on condensing the data to more relevant tables for ongoing discovery.

If this isn't the right place for this, appologies. But I thought I would document some findings, and hopefully engage in some discussion or get some inspiration on what else to look for. I realize I should probably have a time series dataset as well... I'm very curious to model the hodl waves. If any of my data points below are egregiously wrong, knowing that would be good also haha. It's entirely possible I'd have a data integrity issue, despite my best efforts on that front.

I started looking at the utxos (I'm storing them all, and toggling an is_spent to true when they are used). Trying to make sense of what would be considered dust, or likely lost due to time and size. Since Bitcoins start, I see 3.2 billion utxos, of which 179,288,217 haven't been spent (yet)... of that group 86,898,633 of them have a balance of less than 1000 sats (0.00001 BTC or roughly $1 USD currently - at or below network fees). The combined total of all of this unspent 'dust' is 426.3546 BTC. Already this year (2025, or since block 877279) 18.95 BTC has been added to this pile of dust. Worth noting my database was last updated about 20 hours ago, need to create a cron to ingest on every new block as they come. Work in progress...

Is this 0.0001 dust accumulation primarily due to negligence? Or is some other mechanism leading to so much of it? If anyone has ideas of other things to look into I'd love some suggestions Smiley
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Board Bitcoin Technical Support
Merits 4 from 1 user
Topic OP
Help with Port Forwarding for Bitcoin Node on Starlink Router
by
JuxtaposeLife
on 26/01/2025, 01:16:34 UTC
⭐ Merited by LoyceV (4)
I’m running a full Bitcoin node from my bsement on an Ubuntu Server and I’m trying to help support the Bitcoin network by opening port 8333 for inbound connections. However, I'm using Starlink as my internet provider, and I’ve encountered some challenges with port forwarding due to Starlink's use of CGNAT (Carrier-Grade NAT).

Has anyone here successfully opened port 8333 on a Starlink network for a Bitcoin node? If so, could you share your approach or any advice on how to bypass CGNAT or configure port forwarding on Starlink?

Here are a few specific questions I have:

Is it possible to get a static IP or public IP with Starlink to make port forwarding work?
Has anyone used VPN or tunneling solutions to work around this limitation with Starlink? If so, which one worked best?
I’d appreciate any tips or guidance from anyone with experience running a Bitcoin node on Starlink!

Thanks in advance!
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Board Bitcoin Technical Support
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 31/10/2024, 08:20:08 UTC
This would also explain why it's slowly getting slower. The update search across a growing utxo table is getting linearly longer and longer... I'm up to 700m utxos
Thinking out loud here: maybe you can have a look at how Bitcoin Core handles this? For each block, it checks all UTXOs in the chainstate directory, and (especially if it can cache everything) it's fast.
Think of it this way: processing the data shouldn't take longer than the IBD, right?

Good point, you're absolutely right. I'll dive into that and see what I can find.
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Board Bitcoin Technical Support
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 31/10/2024, 08:09:40 UTC
It's the writing on disk (running close to 80% everytime a block gets to the insert part -- which surprises me with write speeds around 7500MB/s)... I suspect the way I am batching everything for each block all at once is what is causing this speed issue (there can be quite a few utxos per block)
Shouldn't disk writes be handled by file system cache? To compare, even on an old HDD, writing 10 million small files (yes I do crazy things like that) is almost as fast as sustained writes. Reading them is very slow, because then the disk head needs to search for each file. Writing is fast, straight from file system cache onto the disk.
I'm not sure how this would work with a database, but if writing 3500 transactions takes 4 seconds, that seems slow to me.

You're right. I was focused on the inserts, but it must be the update to the UTXOs entries that is causing this slowdown. While processing each new blocks I'm looking for utxo's that have been spent and updating that in the database once they are, along with the reference to the transaction that caused them to become spent. I think I can store these pairing in a file as I go, defer all updates until the end, with a batch update that will be much faster than updating each UTXO one-by-one during ingestion. I'll have to think about that. My problem now is I'm been running for almost a week, and I don't want to miss something, leaving me in a state where I would have to start over haha

I think I'm getting closer to solving this... you've been right, it shouldn't take this long. This would also explain why it's slowly getting slower. The update search across a growing utxo table is getting linearly longer and longer... I'm up to 700m utxos

Shouldn't disk writes be handled by file system cache? To compare, even on an old HDD, writing 10 million small files (yes I do crazy things like that) is almost as fast as sustained writes. Reading them is very slow, because then the disk head needs to search for each file. Writing is fast, straight from file system cache onto the disk.
I'm not sure how this would work with a database, but if writing 3500 transactions takes 4 seconds, that seems slow to me.

Completely depends on the filesystem.

Most of them like ext3, ext4 and such use journalling, so when you batch all that data to write into the disk, it actually goes inside the journal first.

Usually the default settings of the journal is to write deltas of the changed bytes on to the disk. This is more reliable than just doing a write-back to the disk, but it's slightly slower.

You can actually change the filesystem settings to more aggressively utilize the disk cache, but it will only take effect on the next reboot.

Interesting. I'll look into this.

====

Thanks again for all the thoughts and ideas. This has been extremely helpful!
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Board Bitcoin Technical Support
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 30/10/2024, 23:44:38 UTC
I would not use a Ryzen CPU for this if you want to me dealing with large datasets / databases and searches an EPYC is the better choice if you want to stick with AMD and if you want to go Intel use a good Xeon.

Same with RAM, if you are manipulating large data sets to analyze you start with the largest one that you may want to look at, at this point from your last post it's the utxos and double it so you would want about 262GB of RAM. You could probably get away with 256GB at that point it's still not ideal but you would be able to load everything into RAM instead of pulling from the drive and look at it there. If you are going to do it, do it right.

I spend a lot of time telling customers 'I told you so' when they try to do things with lower spec hardware for things and they complain it's slow. For a desktop PC having to wait a few extra seconds here and there for some things because you got an i3 instead of an i5 or i7 is one thing. Depending on what you are doing in terms of analyzing this becomes hours instead of minutes.

-Dave


Good points. (Un)fortunately this is just a hobby/interest for now, if I actually want to do real things with this I will definitely need to scale up.

It's definitely not the CPU (23% capacity) that is the bottleneck, or the RPC commands. It's the IO on disk (running close to 80% everytime a block gets to the insert part -- which surprises me with its write speeds around 7500MB/s)... I suspect the way I am batching everything for each block all at once is what is causing this speed issue (there can be quite a few utxos per block) combined with the indexing I'm using to ensure data integrity (maybe not necessary now that it's running really stable... I just didn't want partially processed blocks re-writing on restarts). I'm ingesting about 15,000-20,000 blocks a day currently... I may attempt to change this so I add sets of 1000 at a time, instead of inserting the entire block all at once after being read. But at this pace, it'll get done one way or another within a couple weeks. I'm up to block 481,000... and I'm just past 800GB for the database - but on average it's growing about 80GB per 12,000 blocks now (2017 things really picked up). I estimate, based on some assumptions running a test scripts on sections ahead of me, that this will end up being approximately 3.4TB in size when I'm done, so I'm about a third of the way there.

I may move some of the tables onto an external once I index the things I'm really interested in. Slow and steady, I'll get there eventually.
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Topic
Board Bitcoin Discussion
Re: 'Bitcoin is Inflation-hedge' - 'Haha, we just Tax you, that's the same'
by
JuxtaposeLife
on 27/10/2024, 00:33:07 UTC
It seems the recent talk of taxing Bitcoin, along with statements from the ECB and the US Fed, stems from the irony of Bitcoin’s journey as a high-risk, low-reward asset that was initially overlooked by high-net-worth individuals and institutions. Typically, these entities have a significant advantage: they invest in opportunities before IPOs, influence rules and regulations, and control the flow of fiat currency. But Bitcoin offered no such early advantage. For institutions like BlackRock, an early investment of substantial capital would have been almost impractical. Imagine, for instance, if BlackRock had tried to put $500 billion into Bitcoin when it was valued at $100 per coin—it would have risked distorting the market entirely, with considerable risk and little immediate reward.

Instead, Bitcoin’s early growth was propelled by individuals willing to take on that risk, often representing a significant share of their own net worth, even up to 50%. As a result, they contributed to Bitcoin’s rise to a trillion-dollar asset, gaining influence and financial returns that institutions typically command. Now, as these institutions recognize Bitcoin’s potential and want a stake in it, they’re not pleased to find themselves following rather than leading.

That’s exactly the irony: all this talk about taxing Bitcoin seems like a strategic narrative while these institutions quietly increase their exposure. The more they ease into Bitcoin, the more they signal to others that it’s a viable asset -- effectively paving the way for broader adoption. It’s a fascinating cycle where the very entities that once hesitated now drive momentum, underscoring Bitcoin’s unique rise. It's fun to watch this play out in our time. It'll be interesting to see what history paints the 2009-2029 period as...
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Board Bitcoin Technical Support
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 25/10/2024, 11:39:10 UTC
Currently, I'm at 93m unique addresses, 210m input transactions, and 250m utxos

On block 374,000 I'm at 305GB for the postgres table size. At this rate, I may run out of storage, since I believe the first 150k blocks barely had any data to them.
I count 1,365,198,853 unique addresses (based on last week's data). If that's any indication, you're looking at about 15 times more data.

Maybe significantly more... the last 11k blocks (Fall 2015) added 40GB - at that rate, I'm looking at about 2.5T total, just for this database.
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Merits 5 from 2 users
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 25/10/2024, 02:52:16 UTC
⭐ Merited by LoyceV (4) ,nc50lc (1)
Hmm, I expected that it would only take hours with your build.
Have you set a higher dbcache as I recommended in my previous reply?
Because its default setting of 450MiB isn't ideal to your machine's specs.

Oh no, I missed that one. Just turned it up to 16GB and it didn't seem to change the speed. I'm on about block 400,000 after clearing the tables and starting over 36 hours ago (I noticed something in my code was failing to capture the addresses properly and everything was being labeled as 'unknown'. I've fixed it, and verified a few other issues with the data gathering. Started everything over.

Checking the system, it appears that RAM isn't being heavily used (only 3GB), and the real culprit is Postgres (taking up 50% of CPU - while processing each block in about 2-3 seconds - sometimes it will do 3-5 very quickly). This will eventually catch up, but that's not ideal. Probably not the optimal dB choice due to indexing... I should probably add records at speed and deal with deconficting and adding in the indexes after? Or possibly move to a time series database? I guess this gets into what exactly I want to do with the data... Haven't quite sorted that out yet, I wanted to see it first...

I tried removing all my ON CONFLICT statements, but that didn't seem to imrove things. I tried batching, and it didn't change the speed much either. I think this is just a Postgres insert issue. I should find a faster way to dump the data in, probably from a flat file?

I don't have much experience with datasets this large, I've usually gotten away with inserts as I go...
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Merits 2 from 1 user
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 21/10/2024, 02:17:37 UTC
⭐ Merited by LoyceV (2)
The sync was faster than I expected... took about 22 hours. Created a schema tonight for the 10 structures I'm focused on along with an ingest script... sent it to work on the dataset -- looks like I should have this all organized in about 12 more hours... maybe a little longer than I expect, hard to tell because the fist 10% of the chain processed so incredibly fast (a lot less activity in the early years I assume)...

I think I'm going to need more innternal storage (2TB)... if my initial schema doesn't grow in scope (it will), I'll run out of psace in about 2.75-3 years - easy problem to solve SSDs are relatively cheap. At least I have some time to figure that out. Getting an ideal GPU is probably next...

Cheers!
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Board Bitcoin Technical Support
Merits 10 from 2 users
Re: Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 18/10/2024, 05:44:53 UTC
⭐ Merited by LoyceV (8) ,nc50lc (2)


Starlink is the best option for one of the properties I own (and lived in until recently.)  Again, no issues downloading the blockchain or running the node once it's synchronized.  Your hard drive choice will have more impact on the sync speed than your bandwidth.

...

There's nothing wrong with Ubuntu, but I prefer Debian.  Debian is lighter, and unlike Ubuntu it's 100% open source.  Ubuntu is built on Debian, so unless it has specific features you need (which it won't for your purposes) there's no reason to choose the more bulky OS.  YMMV. 

...

If you don't have a lot of experience with Linux or Bitcoin, it may be best for you to start with an Umbrel sysetem.  They are easy to set up, can be run on a Raspberry Pi, and one click installation of an SPV server and blockchain explorer.  Once you understand what you need then you can research how to build a node the hard way.

Appreciate your insights. I just put the hardware together today, installed the OS, cloned bitcoin, compiled/ran the core and it's now downloading the blocks and verifying. Decided to stick to what I know (Ubuntu Server LTS)... hopefully I don't regret it later, but I guess I could always just rebuild if it comes to that.
Any advice on potential pitfalls, better component choices, or tips for managing a full node with advanced analytics would be appreciated!

Based from your plan, overriding these settings' default may be needed:
Code:
txindex=1
maxmempool=1248
  • "txindex" will enable some features of RPC commands like getrawtransaction which aren't available to nodes without a full transaction index.
    Enabling it before the "Initial Block Download" will make sure that the database is built while syncing, that could take hours if enabled later.
  • "maxmempool" will set your node's mempool size from the default 300MB to your preferred size.
    This is useful to your user-case to be able to keep most of the unconfirmed transactions since the default isn't enough during "peak" seasons.

You may also increase your node's database cache with dbcache=<size in megabytes> for it to utilize more of your memory.

Thanks so much for this, looks like those will really help me, I put them into the config before I ran the core for the first time and started downloading/verifying

Hardware Bottlenecks: Are there any obvious weak points in this build for running full node operations and handling data-intensive tasks like blockchain analytics? I'm especially interested in potential memory or storage issues.
The system is fine.  If anything, it's overkill.  One of my full nodes runs a Dell mini-pc, i5, 32gb of ram, and a 2TB nvme.
For a node, I agree. For blockchain analytics, I'd say the more RAM the better.

@OP: before you do a lot of extra work, have you seen Bitcoin block data? It includes daily dollar prices.

I'll look for deals in the coming months, and see if I can upgrade to 64 of 128. Also thanks for the link, I'll check it out. I'm happy to stand up a node to help broaden the security of the network...and I'm sure having it all local will make processing easier, as I'm planning to do some complex indexing and datasets. At least I have ideas in mind... will need to see if any of them pan out. For now, whie I'm waiting for the sync this gives me something to look at Smiley

Hardware Bottlenecks: Are there any obvious weak points in this build for running full node operations and handling data-intensive tasks like blockchain analytics? I'm especially interested in potential memory or storage issues.

If your software (which perform analytic) could utilize GPU, you should know GT 1030 is old and low-end GPU. So you probably want to get something faster. More RAM could allow faster analytic since you could store more data on RAM rather than accessing it from the SSD.

Software: I plan to use Ubuntu Server. Is this a solid choice for running a full node and developing analytics tools, or are there other distributions better optimized for this kind of work?

By default, Ubuntu server doesn't include GUI. You probably want to use Ubuntu 24.04 LTS instead.

Future Expansion: I'm looking to scale this setup to handle machine learning models on the blockchain data in the future. Should I anticipate the need for more advanced GPUs or additional hardware as I expand the complexity of my models?

I don't know about machine learning or AI field, but your build should support 4 RAM and 2 GPU. And FWIW, marketplace which rent GPU or high-end computer exist.

I guess I'll find out when I get into the heavy processing. I'm developing from scratch, so we'll see if I get frustrated with the limitations of the system and incorporate a GPU. If nothing else this is my attempt at learning something new and stretching my development skills. I am energized by projects where I can ultilize pervious experience into new problems. Not exactly sure what I would call a problem here, I'm just tinkering with the modeling for now... looking for something that might be of use to everyone as I go. I've developed full stack, and really enjoy the visualizations on the front end. Or making useful interactions with data.

Cheers. Appreciate all the help so far. I'm sure I'll have questions soon Smiley
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Board Bitcoin Technical Support
Merits 16 from 2 users
Topic OP
Advice Requested on Full Node Build for Advanced Analytics
by
JuxtaposeLife
on 13/10/2024, 19:01:51 UTC
⭐ Merited by LoyceV (12) ,NotATether (4)
Premise: I'm planning to set up a full Bitcoin node to run advanced analytics and answer some research questions I have on wallet behavior, scarcity, and how price fluctuations affect the ecosystem. I'm looking for feedback from the community on the hardware setup, potential bottlenecks, and issues I might not have considered at this stage.

About Me: I’m a data engineer with a background in computer science, network engineering, and physics. My professional experience includes working with large data sets, complex models, and analytics. Over the past decade, I’ve applied these skills in scientific research, stock market analysis, and behavioral studies. I’m now diving into blockchain data and seeking to develop models that address some unanswered questions.

Questions I’m Exploring:
  • Modeling the behaviors of active vs. inactive wallets.
  • How price volatility influences ecosystem behavior.
  • Tracking scarcity flows between known and unknown entities over time.
  • Identifying and analyzing "gatherers" — addresses that continuously accumulate BTC, regardless of price trends, and modeling their impact on scarcity.
  • Projecting Bitcoin’s scarcity under various price scenarios up to 2050 and beyond.
  • I’ve seen opinions on these topics, but I’m struggling to find solid research backed by real-world data models. If anyone knows of existing work in these areas, I’d love to hear about it!

Planned Build (Hardware):

Processor: AMD Ryzen 7 7700
Motherboard: MSI MAG B650 TOMAHAWK (AM5 socket)
Memory: G.SKILL Trident Z5 RGB DDR5-6000 (32GB)
Storage: Samsung 990 Pro 2TB (NVMe SSD for fast data access)
Power Supply: Corsair RM850x
Case: Corsair 4000D Airflow
CPU Cooler: Corsair iCUE H100i Elite Capellix (AIO)
Optional GPU: MSI GeForce GT 1030 2GB (mainly for potential machine learning features later)
My Questions/Concerns:

Hardware Bottlenecks: Are there any obvious weak points in this build for running full node operations and handling data-intensive tasks like blockchain analytics? I'm especially interested in potential memory or storage issues.

Connectivity: I’m on Starlink Residential (150-200Mbps download), which should be fine after the initial blockchain sync (~600GB). Does anyone have experience with how connectivity might impact node reliability, particularly in rural areas?

Software: I plan to use Ubuntu Server. Is this a solid choice for running a full node and developing analytics tools, or are there other distributions better optimized for this kind of work?

Future Expansion: I'm looking to scale this setup to handle machine learning models on the blockchain data in the future. Should I anticipate the need for more advanced GPUs or additional hardware as I expand the complexity of my models?

Any advice on potential pitfalls, better component choices, or tips for managing a full node with advanced analytics would be appreciated!