I have a hard time understanding what you're saying... But basically, one unspent output can only be spent in one confirmed transaction.
Once a transaction spending a certain unspent output is confirmed, all unconfirmed transactions spending the same unspent output become invalid.

As a fictional example:
I fund address 1Address with an unspent output with value 0.001 BTC in transaction with transactionid abcdefghijklmnop and the transaction gets confirmed.
At this point, i can create transactions with tx id qsdfkmjiuqdsfqsdf and miuqpdfiousdfsdf both using unspent output abcdefghijklmnop with value 0.001 as an input. HOWEVER, only one of these transactions can EVER make it into a block. Once one of the two transactions gets confirmed, the other one gets kicked from all the mempools of all the nodes that have the other transaction in their mempool. If a miner would put the other transaction into a block, the block would become invalid and all the nodes of the network would reject said block.

Just a quick heads-up: above link goes to my blog, but the post was written 5 years ago and hasn't been updated since...
This is not a security concern, but most links to my tools no longer word due to bad maintenance (lack of time).

Also, this was during a time where it was still "normal" to have P2PKH (legacy) addresses derived from a single private key (eventough HD wallets were also common). Nowadays, i guess most people will have an SPV HD wallet and use the P2WPKH address format (maybe we'll even see more P2TR in the future).

Valid alternatives for the outgoing links have been added right into coinb.in directly, eventough some do need an active internet connection (so you'll end up with an offline version of coinb.in to do the actual signing, and an online version to broadcast your transaction):
the fee-estimate link: https://coinb.in/#fees
the raw transaction decode link: https://coinb.in/#verify
the txpusher link: https://coinb.in/#broadcast

My advice for anybody would be to test everything out on the TESTNET first:
https://coinb.in/#settings
As long as you're on the testnet, you can do every step with the online version of coinb.in... Just make sure to download a local copy and go offline BEFORE touching any main net private keys!!!

TL;DR; There aren't any security concerns with the link to my blog, but most of the links to my toolset are dead and it's possible users have to use a slightly different approach to sign transactions (since they probably won't be using unspent outputs funding P2PKH addresses).

I have no idear what the difficulty for litecoin is at this moment, but maybe you're not finding any shares?
Pools use the shares to estimate your hashrate, if the diff of your shares is "too" high, and you're not finding any shares, the pool will estimate your hashrate to be 0.

 

The worst part is: i usually have even more tabs open... I especially did some closing before taking a pic, leaving only the tabs i really need open

I'm not really a gambler, but i know that on bitcointalk, a future bitcoin block hash is used pretty frequently:
You give tickets to every participant, and publicly list the ticket id's. You pick a future block height at the time of publicizing the list of available tickets. When the block with the predetermined height is mined, you look at the last 2,3 or 4 characters of the sha256d hash of the header (depending on the amount of tickets passed out) and the person with the ticket id that matches the last 2,3 or 4 characters wins... If the last 2,3 or 4 characters don't match any ticket, you just wait for the block with height +1.

The intended use of merit was to combat spammers... it makes sure a newbie can only rank up when he/she makes meaningfull posts that are merited by others. Without merit, the user stays a newbie forever.
And a newbie has severe limits when it comes to signature space, frequency of posting, frequency of pm'ing, warning labels on their PM... So, it is less attractive to spam (or scam) with a newbie account...

Merit is doing it's job just fine... It's not perfect, but i was here in a pre-merit time, and it is obvious to me that the amount of spam decreased significantly (except for those bounty hunter subforums... they don't care about the newbie restrictions and are perfectly fine never ranking up)

here you go


So, apparently, it's not the "*" symbol

The complete url is:
https:// mocacinno.com/ hotlinkimages/ hw*_small.png

Hmm... That's interesting... A * isn't a common character to see in an url (afaik). Maybe cloudflare or the imageproxy can't handle this...

True, but i don't host pictures that are copyrighted... As a matter of fact, i usually host diagrams i've created myself or screenshots from open source applications...

Eventough this test is conclusive, there's always the chance medium is blocking bitcointalk's imageproxy and nothing else (or they could be using a blacklist instead of a whitelist). It's not that common, so this is probably not the case, but it's certainly not impossible. This way, your test would run fine, but images inserted into bitcointalk would not...

I usually hotlink images from my own server, so i cannot say i've experienced this problem before... This being said, there could be multiple explanations, i've listed them from most plausible to least plausible:

• Medium started disallowing hotlinking from their server. It's an age-old problem: services suddenly realize that their bandwidth is being used to hotlink images without them being able to monetize said traffic and start blocking hotlinking without giving notice. A long, long time ago, i even had people threatening to take me to court because i disabled hotlinking from my servers (they were stealing my bandwidth to serve my images straight from my host without even asking me, so i basically replied: go ahead, i'll see you in court... needless to say that nothing happened)
• Medium changed something on their WAF, scripting or local firewall without the intention to block hotlinking, but still with the same end result
• Bitcointalk is behind cloudflare, and it has been known to act strange when posting (for example) blocks of code
• Bitcointalk itself changed something in their image proxy settings

Apart from the other issues raised above, i also wonder how you'd do this on a technical level without touching the core values of bitcoin.

If a miner (wether it be a big or a small one) finds a block header whose sha256d hash is under the current target, but he/she hasn't registered with some sort of central authority (that verifies the "green" status), will other nodes be forced by this central authority to reject the perfectly valid block? How can you do this in a way that does not introduce any form of centralisation, control, censorship,... and in a way that the "new" consensus rules are accepted by the majority of the network?

As it currently stands, a miner can mine completely anonymous. He only needs the block header of the previous block (and maybe some unconfirmed transactions, but this is not completely necessary), he does not need to verify himself or let the network know he is mining... Only when he solves a block, he has to broadcast it (but the other nodes never know if he was the one that solved the block, or if he's merely relaying it).

this was the first hit i got on google: https://www.wikihow.com/Route-All-Network-Traffic-Through-the-Tor-Network

An other option would be to run tor, and setup your browser to use the running tor instance as a socks5 proxy. That way all traffic from this browser is routed trough tor, but the rest of your traffic is not.

Agreed, and on top of this, i guess there are also:

• Dev's that hope to get some donations
• Dev's that might get some sponsoring from private company's (i can imagine a hardware wallet vendors paying SPV wallet dev's to add support or extra features?)
• Multibit used to charge people a small fee per tx
• (mostly) online wallets can use their gui to display advertisements

Not that i have proof (or examples) of each of these points, but i guess some of them are viable forms of income or motivation for wallet developers

There are already several mining pools that do exactly this... For example viabtc: https://www.viabtc.com/tools/txaccelerator

But yeah, cpfp is usually cheaper and faster than paying a pool operator...

No, your ip isn't saved on the blockchain.
If you use an SPV wallet (like electrum) without tor tough, you do connect to the electrum node to broadcast your transaction (and look up your balance). So the node operator could potentially log your actions.
When using an online wallet (not recommanded), it's even worse: they could potentially log every action.

And block explorers could also log which ip requested to look at which address/transaction.

But the biggest "problem" with your anonymity is that both buying and selling btc (or using btc to buy something) usually requires KYC. Now, if you mine BTC, or use a decent mixer, or switch chains to XMR (and back), and you don't post your address on a forum, and you don't look up your balance on an explorer, and you don't re-use your address, and you use a wallet over tor (or use a full node as a wallet), odds are small somebody will be able to identify you as long as you don't use your btc to buy something physical, or buy something in a store that requires KYC, or sell your btc on an exchange that requires KYC.

The hashrate you get for cpu (or gpu) mining is sooooo low that the income and the benefits for the network are so close to 0, that in reality you can say they are 0(both the netto hashrate, as the hashrate for every Joule of energy consumed).

The strenght from the network comes from the huge total hashrate. In order to orphan a chain, you'd need to invest millions in hardware and power to pull it off (even if you just want to orphan 1 block). So by adding an rPi, you're doing nothing for the network, an attacker wouldn't have to spend a single cent more in order to attack us if you decided to mine with your rPi...
If you want to contribute, you could potentially use your rPi as a full node, i guess that would do more than using it as a mining device.

No, i'm afraid it doesn't mean that you solved a block:
https://bitcointalk.org/index.php?topic=5355470.msg58391101#msg58391101


You have to realize that mining with such a stick results in an astronomical small chance of hitting a block... Odds are big you'll never ROI when you incorporate the electricity you'll burn... It's a nice learning tool, or a miner for a low diff coin, or a demo device, or a lottery device (but chances of winning said lottery are astronomically small!)

At some point, amounts and ranks don't matter that much anymore... At least, that's how it was in my case.

Sure, i still like to receive some merits, because it means somebody appreciates what i've written, but wether it's 5 merits or just 1 isn't that important. At some point, merits become less of a tool to rank up, and more of a thumbs-up functionality. I know it wasn't created for this purpose, but still, once you reach the legendary rank, that's a bit how it feels for me personally.

correct. It's all about the size of the transaction, and not about the value... you can go even more extreme: if you have 100 inputs with a $1 value, it'll be more expensive to spend them than if you'd have one single input with a $10.000.000 value.

In number of posts, maybe they are not dominant... In absolute number of posts, i'm pretty sure they are.

It has been a long time since i actually counted, but for this post, i just opened the patrol page to see what new users are doing on bitcointalk:
https://bitcointalk.org/index.php?action=recent;patrol

1 complaint about a gambling deposit
1 job offer
1 question about escrow services
1 russian post i couldn't understand
1 discussion about crowfunding
1 post in snowshow's trolling thread
194 bounty reports


Now, these are newbie posts, but they do represent a big majority of bitcointalk's active population... So odds are that those posts are dominant, they are just located in a low number of bounty hunter threads, and most of these threads are located in subforum's mosts of us will probably have on ignore...

EDIT: i know this isn't 100% accurate, if we wanted to be sure we'd have to manually browse trough the last 100 new msg id's and tally.

I agree with the above posters (the fact that the OP is most likely confused between the actual transaction fee, and the mislabeled profit "fee" payed to a custodial service, or that he uses a wallet that grossly miscalculates the fee).

This being said, i do wanted to point out two things, just in case the OP is using a proper wallet and still thinks the fee is to high:

• fees are payed to the miner to give them incentive to add your transaction to a block. This is why fees fluctuate heavily over time. If the fee is to high right now, you can always consider waiting a while before moving funds/buying something with BTC. You can also opt-in RBF, so you can pay a lower fee, and bump it when you see your tx isn't getting confirmed
• It might also be a good idear to read up on the lightning network. Fees for a transaction are very, very low...