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There are multiple ways to encode data into the blockchain. However all of them require burning coins. IMO the easiest and most common method is using an OP_RETURN output. The only downside is that it can only store 80 bytes of data. There are many tutorials of how to do this so google them.
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Are you sure on this? It seems if an address receives a bunch of carded merchandise even if through wishlist they would look into it. I guess the carding aspect scares me on it.
They do look into it I suppose, but with physical goods, the time to prepare and ship those products is usually enough time for their fraud detection stuff to catch carders so much of the stuff you buy won't actually be carded. Although if you are scared of carders purse has an instant option which gives you only a 5% discount. This I believe is actually paid for by purse so they won't be using stolen credit cards. Also, I think that purse will cover you if you do happen to be under investigation for supposedly carding stuff. They will pay up to $10,000 for any unexpected costs like legal fees if you happen to be taken to court over buying stuff on purse because the goods were carded. |
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So what happen if the order that is getting shipped to you was done with a gift card purchased fraudulently?
AFAIK nothing happens to you if you receive the goods. Since it is someone else that is fulfilling the wishlist that you created, then you nothing bad will happen to you if the order arrives. If it does not, purse.io uses escrow. When you want to buy something, IIRC bitcoin is taken from your balance and locked in escrow. Then you wait for someone to buy the stuff and wait for it to arrive. If it doesn't, then you can open up a dispute and you will get your Bitcoin back. |
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iii. Which rate Purse.io uses for BTC to FIAT coversion? Coinbase rate or their own rate?
The rate is essentially determined by the bitcoin seller. It is what determines the discount. Bitcoin seller determined the rate! How come? Bitcoin seller is the Amazon buyer in this case. And if it is bitcoin buyer you mean, then wont he intentionally offer a low rate, which will eat the discount advantage? I thought, purse.io uses some standardized rate, e.g. CoinBase/Bitstamp etc. The person selling the Bitcoin (meaning buying goods from amazon) sets the rate that he wants to sell his Bitcoin at. Purse.io sets a minimum that he can set that rate to and that minimum is usually that market rate. By setting the selling price higher, he is giving himself a discount on the goods. The buyer cannot do anything about it. He can only choose who to buy Bitcoin from and choose a person selling at a lower rate. The Bitcoin seller is incentivised to not set a super high discount (high bitcoin price) for himself because then no one will take his offer and he won't get what he wants. Intersting I had not heard of this. I always love learning something new. My big question is there any possibility of getting mixed up with carding or any other bad things with this? I just am having trouble seeing why someone would buy a amazon order for 20 percent higher then what bitcoin is worth. So makes me worried they are using carded account to buy and ship to you or other not so good means. There definitely is a lot of carding and credit card fraud on purse. But there are also people who are willing to paying premiums for Bitcoin. Especially with a credit card which a lot of exchanges don't accept. With purse they don't have to verify or give out personal information or their bank account which I am sure that a lot of noncarders don't want to give out. |
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OK...But how do I locate the blk00333.dat file to delete it ?? I'd rather be safe than sorry.
Is there any particular way I should delete it???
I hope to hear from you very soon.
That file is located in the blocks folder in the data directory |
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how many visitor you get in your site? you can accept to sell ads space?
I can sell you ad space on the site if you want it. It would be a banner at the top of the page. The current stats are 20-30 unique views per day and 120-130 total views per day. I think that more people use your site mmm  ... I don't know how much to offer  make you a price Let's discuss this through PM. |
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So it looks like you have a corrupted block on your disk. You can delete blk00333.dat file which is causing the problems but doing so would require having to reindex again, and from it looks like, it will take you a really long time. Another option, which would probably be faster for you, is to download someone else's fully indexed data directory. This thread: https://bitcointalk.org/index.php?topic=1310261.0 links to one that is fully indexed and ready to go, you just need to download and unzip the file. However, do so with care as I don't think it has been verified to be trusted yet (although it is probably safe to trust it). It is downloaded as a torrent. |
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iii. Which rate Purse.io uses for BTC to FIAT coversion? Coinbase rate or their own rate?
The rate is essentially determined by the bitcoin seller. It is what determines the discount. Bitcoin seller determined the rate! How come? Bitcoin seller is the Amazon buyer in this case. And if it is bitcoin buyer you mean, then wont he intentionally offer a low rate, which will eat the discount advantage? I thought, purse.io uses some standardized rate, e.g. CoinBase/Bitstamp etc. The person selling the Bitcoin (meaning buying goods from amazon) sets the rate that he wants to sell his Bitcoin at. Purse.io sets a minimum that he can set that rate to and that minimum is usually that market rate. By setting the selling price higher, he is giving himself a discount on the goods. The buyer cannot do anything about it. He can only choose who to buy Bitcoin from and choose a person selling at a lower rate. The Bitcoin seller is incentivised to not set a super high discount (high bitcoin price) for himself because then no one will take his offer and he won't get what he wants. |
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You shouldn't discuss politics and economics in a thread on the mailing list, but if it is related to a proposal, I don't think it should be moderated. "Generally discouraged: non-technical bitcoin issues" I believe banning issues of politics and economics from development of a consensus and money system is going to lead in misguided directions where cryptographers design systems they don't understand and that are inherently not robust and flexible. Furthermore it leads to two separate communities - developers and the rest. Most of what's going on at the moment has to do with this. The social architecture doesn't work all that well. Most Bitcoin companies don't contribute to core, and core doesn't care about Bitcoin companies and users. Keyword "Discouraged" not banned. You can still discuss it there, it just isn't entirely wanted but if it is relevant to the topic at hand, I don't think it will be moderated. Again, they are doing a review of the moderation policy, since you clearly have a problem with it, please bring it up and discuss it on the mailing list, not here. They aren't going to see it here. |
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0.12.0 introduces DB obfuscation to prevent false positives. It is my understanding that this work by xor-ing the block files with seeded random stream. If armory tries to read the block files it won't be able to. Is there any plan to work around this? If not, I'm guessing that there would be a way to disable the feature in bitcoin core, but I'm guessing it would at least take a reindex.
It should. I am running the latest in the 0.12 branch of Bitcoin Core and armory 0.93.3 appears to work just fine with it, although a transaction that I received isn't appearing but I am attributing that to the fact that Bitcoin Core is reindexing right now. |
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Can you post the armory logs? Get them by going to File > Export Log File. Also, you should open a support ticket by going to Help > Submit Bug Report.
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Hi,
Sorry, my English is terrible. I hope i can explain my problem!
I use latest version of Bitcoin Core wallet. Every time i send any amount of found from my wallet to an address,also a small of amount sent to another address in my wallet like multi sig wallets.
I want to check my balance in my cellphone via blockchain.com but with this situation i can't see my hole balance in a single address.
is there any solution ?
Not really. Those addresses are called Change addresses. To check your balance on a block explorer, you would need to know all of your addresses. The other option is to make Bitcoin Core not use change addresses but rather send the change back to an address you already have. This is advised against. Thanks for quick response. How do i do that? make my wallet to not use change addresses. I aware about the risk. If you go in the options menu and enable coin control, when you send, you can set a custom change address. Just set that change address to be the same on every time. |
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In the below transaction I know why the scripts are needed. The question I have is why can't you just do something like: input_txid + output_txid + HASH160(pubkey) + amount + fee + signature(input_txid + output_txid + HASH160(pubkey) + amount + fee) Hoping for some input, good or bad. #394788
raw: 53230eac52e135d99960da6b88aad87641a022b5e6fb5bda75da7878b3154fef
01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff2a032406061d4d696e656420627920416e74506f6f6c20626a3731e324fd2056a4b87ff012000093f60100ffffffff0100f90295000000001976a91402a61d2066d19e9e2fd348a8320b7ebd4dd3ca2b88ac00000000
{
"lock_time":0,
"size":127,
"inputs":[
{
"prev_out":{
"index":4294967295,
"hash":"0000000000000000000000000000000000000000000000000000000000000000"
},
"script":"032406061d4d696e656420627920416e74506f6f6c20626a3731e324fd2056a4b87ff012000093f60100"
}
],
"version":1,
"vin_sz":1,
"hash":"53230eac52e135d99960da6b88aad87641a022b5e6fb5bda75da7878b3154fef",
"vout_sz":1,
"out":[
{
"script_string":"OP_DUP OP_HASH160 02a61d2066d19e9e2fd348a8320b7ebd4dd3ca2b OP_EQUALVERIFY OP_CHECKSIG",
"address":"1F1MAvhTKg2VG29w8cXsiSN2PJ8gSsrJw",
"value":2500000000,
"script":"76a91402a61d2066d19e9e2fd348a8320b7ebd4dd3ca2b88ac"
}
]
} Scripts allow you to do other things since they specify how you that output can be spent. Those allow special nonstandard transactions for both experimenting and creating more features. |
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Hi,
Sorry, my English is terrible. I hope i can explain my problem!
I use latest version of Bitcoin Core wallet. Every time i send any amount of found from my wallet to an address,also a small of amount sent to another address in my wallet like multi sig wallets.
I want to check my balance in my cellphone via blockchain.com but with this situation i can't see my hole balance in a single address.
is there any solution ?
Not really. Those addresses are called Change addresses. To check your balance on a block explorer, you would need to know all of your addresses. The other option is to make Bitcoin Core not use change addresses but rather send the change back to an address you already have. This is advised against. |
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What are the mechanics of a bitcoin exchange, or any 'classical' exchange that is?
Say I want to go back into fiat because the local Italian join doesn't like bitcoins...lol. Anyway.
I hop onto the exchange, (hear: any) and select the exchange of XBT to USD. I move bitcoins to the exchange and wait for confirmation. When the coins are confirmed, I execute the exchange and my bitcoins are gone and now I have USD. I then wire my USD to a bank account, hop into the car, go downtown, and get me some good lasagna.
Now, I'm not that knowledgeable about the exchange market so hear me out:
1.) Do the bitcoin exchanges have a single wallet that all funds go into, or does the user have their own?
Each exchange has its own wallet (wallets are different from addresses). However exchanges will give each person a different address to deposit to (but the address is still a part of their wallet). The different addresses reduces address reuse and helps them keep track of deposits. 2.) Do all exchanges of bitcoins to fiat or v-v exist on the main-chain or does it exist off chain?
Off chain. When you deposit, it goes into their database that you have X Bitcoins. When you exchange, their database changes so that you now have Y Bitcoin and Z USD. But no Bitcoin actually moved anywhere. The Bitcoin only moves when someone decides to withdraw their balance. 3.) How are prices determined? Are they a running average of all take/give prices of bettors/sellers?
With actual exchanges where you are trading with others, the price is determined by supply and demand. If more people are willing to buy, then the price goes up and vice versa. For exchanges where you are just exchanging Bitcoin for fiat with the actual exchange itself, they usually determine the price off of other exchanges and sets their own price which should be near the market price. 4.) What are the usual fees associated with the exchange?
1 - 2% usually |
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I do not see in the moderation policy ( https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-October/011591.html) anywhere where they mention that you are not allowed to discuss the economics and such behind a proposal. You shouldn't discuss politics and economics in a thread on the mailing list, but if it is related to a proposal, I don't think it should be moderated. Can you point out some posts where posts were moderated because they were not about technical discussion but were related to a technical proposal and contributed to that discussion? If you think their moderation policy is too strict, right now they are doing an unmoderated review of the moderation policy. You can bring this up there and get some smart answers and they may even change the policy. The point of moderating the mailing list is to reduce the amount of crap and spam being posted that was unproductive to discussion. If you look at the previous archives, there is quite a bit of stuff that isn't related to the discussion and it gets in the way of actual useful discussion. |
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Last i read you should be able to change the whole tx which was kinda problematic because of double spending.
Oh - I hadn't realised this was the case (that makes me rather less enthusiastic about RBF - I can now envision someone creating a wallet with a "double spend" button). It does allow for most of the transaction to be replaced (still has to include at least one input to actually be replacing something). However I don't think most wallets will give you the option to double spend. I think that most wallets will only have an option to boost your fee rather than double spend the transaction. Of course, if someone was being malicious, they probably don't even need a wallet that gives them the option to double spend. I dont see a link between broken ecdsa and rbf.
A double-spend attempt is a double-spend attempt but perhaps the attempt itself is made easier with RBF. If ECDSA is broken by QCs and the private key can be revealed from the public key in less than 10 minutes, an attacker with a QC could find that private key and attempt to double spend the inputs in the transaction that originally had the public key. With the current node policy, if they made a double spend attempt, it would probably fail due to the first seen behavior of nodes. Those nodes would already have seen the original transaction and thus reject the double spend. With RBF, if the attacker simply increased the fee in his malicious transaction, his transaction would be able to replace the original transaction if the original had opted in to RBF. This would make stealing the coins slightly easier, but only if the transaction opted in to RBF. |
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Can someone explain to me why full member accounts have bitcoin value and are sold sometimes? What gives full member accounts value, do they get paid for each post or what? basically all accounts here aside from newbie have value, there is a market for it coz it can be used in joining signature campaign to get paid just for posting in this forum. full member accounts are just like the floor rank to get decent payrate in signature campaigns, lower rank have much lower payrate which isnt worth it for some users So Hero Members would be the highest valued accounts. If you don't mind me asking how much is the pay rate is it by posts or clicks on the ads in your signature Legendary members are actually the highest. The pay is always paid by the number of posts that were made that fit their post requirements. |
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Try reindexing. Start Bitcoin Core with the -reindex flag and let it do its thing. It should then be reindexing and syncing.
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