Supreme {COMMUNITY ALERT} BE AWARE OF DOUBLE SPENDING SCAM

[816]

When selling/exchanging a product or currency, and you are paid in bitcoin, use your common sense and wait for one confirmation. In this scam, the scammer will 'go first', and then have you pay them/send product before it is confirmed. Once you send the money/product, they will double spend the transaction. The money will go back to them, and you will have nothing. Someone attempted it on @Squezzy yesterday. Here is how you stop it.

When doing a deal, never rush. If the other person is rushing you, theyre probably trying to scam.

Always wait for 1 confirm. After 1 confirm, it cant be double spent.



here is a transaction for earlier. as you can see, it has 5 confirms so it is safe to release the product/money. If you dont wait, the money can be pulled back. 

this has no confirms so you wouldnt send. Use common sense, and never rush/use mm when u can.

Seems like common sense but some people fall for it. Stay safe out there.

[3.101]

ppl who dont wait r stupid

you're not ugly, you are just fat. go touch grass

[202]

Yep, some wallets have the option to cancel a transaction before 1 confirmation even though it's on the blockchain.

[346]

That isn't what that usually is though, just so ya know . Not trying to say that this kind of scam doesn't happen, it probably happens pretty often, but the more common reason for seeing two output addresses like in the transaction here is:


 


The second address is the change from the transaction. There was more than one output because you didn't have any previous transactions (sometimes thought of as "coins") that added up the exact amount of the transaction.Some clients do this but not all, the client picked some coins that added up to at least that amount and then created a new address to receive the leftover amount. So, in the cases I'm talking about, the second address is your own wallet. The client isn't clear on that, I know, but you will see that a lot more often than people attempt to refund scam with BTC.. Not that it doesn't happen.

Essentially you wanted to send 22 cents, but only had dollar bills in your wallet. So the 0.78 was the leftover amount and the client created a new address to hold it rather than reuse  the address you sent it from - it is partly a privacy thing, helping to keep your wallets balance hidden by not reusing the send address and creating a new one to help mask your balance

 I know its a bit of an odd concept with Bitcoin to think in terms of change, but it does happen. On top of that, it is more cost effective for blockchain database querying and tracing/calculating to have specified input and output addresses rather than input = output - input with rulesets to accommodate reusing the same wallet address for both input and output variables. 

@MoneyWraith @Psychedelic don't question this explanation, I got it from Google - it is an irrefutable truth of humanity now.

[816]

That isn't what that usually is though, just so ya know . Not trying to say that this kind of scam doesn't happen, it probably happens pretty often, but the more common reason for seeing two output addresses like in the transaction here is:


 


The second address is the change from the transaction. There was more than one output because you didn't have any previous transactions (sometimes thought of as "coins") that added up the exact amount of the transaction.Some clients do this but not all, the client picked some coins that added up to at least that amount and then created a new address to receive the leftover amount. So, in the cases I'm talking about, the second address is your own wallet. The client isn't clear on that, I know, but you will see that a lot more often than people attempt to refund scam with BTC.. Not that it doesn't happen.

Essentially you wanted to send 22 cents, but only had dollar bills in your wallet. So the 0.78 was the leftover amount and the client created a new address to hold it rather than reuse  the address you sent it from - it is partly a privacy thing, helping to keep your wallets balance hidden by not reusing the send address and creating a new one to help mask your balance

 I know its a bit of an odd concept with Bitcoin to think in terms of change, but it does happen. On top of that, it is more cost effective for blockchain database querying and tracing/calculating to have specified input and output addresses rather than input = output - input with rulesets to accommodate reusing the same wallet address for both input and output variables. 

@MoneyWraith @Psychedelic don't question this explanation, I got it from Google - it is an irrefutable truth of humanity now.

yea but thats not the point. obv wallets use change addys but the point is its unconfirmed- that tx wasnt double spent but i was just showing that if you tx shows unconfirmed like that then dont release of course. seen it happen twice yesterday to someone.

[346]

That isn't what that usually is though, just so ya know . Not trying to say that this kind of scam doesn't happen, it probably happens pretty often, but the more common reason for seeing two output addresses like in the transaction here is:


 


The second address is the change from the transaction. There was more than one output because you didn't have any previous transactions (sometimes thought of as "coins") that added up the exact amount of the transaction.Some clients do this but not all, the client picked some coins that added up to at least that amount and then created a new address to receive the leftover amount. So, in the cases I'm talking about, the second address is your own wallet. The client isn't clear on that, I know, but you will see that a lot more often than people attempt to refund scam with BTC.. Not that it doesn't happen.

Essentially you wanted to send 22 cents, but only had dollar bills in your wallet. So the 0.78 was the leftover amount and the client created a new address to hold it rather than reuse  the address you sent it from - it is partly a privacy thing, helping to keep your wallets balance hidden by not reusing the send address and creating a new one to help mask your balance

 I know its a bit of an odd concept with Bitcoin to think in terms of change, but it does happen. On top of that, it is more cost effective for blockchain database querying and tracing/calculating to have specified input and output addresses rather than input = output - input with rulesets to accommodate reusing the same wallet address for both input and output variables. 

@MoneyWraith @Psychedelic don't question this explanation, I got it from Google - it is an irrefutable truth of humanity now.

yea but thats not the point. obv wallets use change addys but the point is its unconfirmed- that tx wasnt double spent but i was just showing that if you tx shows unconfirmed like that then dont release of course. seen it happen twice yesterday to someone.

Well yeah, but that wasn't my point. I never mentioned unconfirmed transactions at all, a more HQ share would be . . . actually, nvm i'm about to make it myself - then you can pay close attention and maybe learn something for your soul 

[816]

That isn't what that usually is though, just so ya know . Not trying to say that this kind of scam doesn't happen, it probably happens pretty often, but the more common reason for seeing two output addresses like in the transaction here is:


 


The second address is the change from the transaction. There was more than one output because you didn't have any previous transactions (sometimes thought of as "coins") that added up the exact amount of the transaction.Some clients do this but not all, the client picked some coins that added up to at least that amount and then created a new address to receive the leftover amount. So, in the cases I'm talking about, the second address is your own wallet. The client isn't clear on that, I know, but you will see that a lot more often than people attempt to refund scam with BTC.. Not that it doesn't happen.

Essentially you wanted to send 22 cents, but only had dollar bills in your wallet. So the 0.78 was the leftover amount and the client created a new address to hold it rather than reuse  the address you sent it from - it is partly a privacy thing, helping to keep your wallets balance hidden by not reusing the send address and creating a new one to help mask your balance

 I know its a bit of an odd concept with Bitcoin to think in terms of change, but it does happen. On top of that, it is more cost effective for blockchain database querying and tracing/calculating to have specified input and output addresses rather than input = output - input with rulesets to accommodate reusing the same wallet address for both input and output variables. 

@MoneyWraith @Psychedelic don't question this explanation, I got it from Google - it is an irrefutable truth of humanity now.

yea but thats not the point. obv wallets use change addys but the point is its unconfirmed- that tx wasnt double spent but i was just showing that if you tx shows unconfirmed like that then dont release of course. seen it happen twice yesterday to someone.

Well yeah, but that wasn't my point. I never mentioned unconfirmed transactions at all, a more HQ share would be . . . actually, nvm i'm about to make it myself - then you can pay close attention and maybe learn something for your soul 

OK 'trusted service provider'. I don’t think I need any of your guidance. I understand how change addresses work and the way bitcoin works—I deal with your net worth x10 everyday.

However, that is irrelevant. I never mentioned any sort of suspicion about the transaction, simply showing it was unconfirmed and the person should wait til it’s confirmed.

But hey, what do I know, good luck growing your account and exit scamming before christmas

In case you haven’t noticed, ‘trusted people are known to be trusted without putting ‘trusted in their username title. All the ebook and other exit scammers do that.

[447]

yea but thats not the point. obv wallets use change addys but the point is its unconfirmed- that tx wasnt double spent but i was just showing that if you tx shows unconfirmed like that then dont release of course. seen it happen twice yesterday to someone.

Well yeah, but that wasn't my point. I never mentioned unconfirmed transactions at all, a more HQ share would be . . . actually, nvm i'm about to make it myself - then you can pay close attention and maybe learn something for your soul 

OK ebook seller. I don’t think I need any of your guidance. I understand how change addresses work and the way bitcoin works—I deal with your net worth x10 everyday.

However, that is irrelevant. I never mentioned any sort of suspicion about the transaction, simply showing it was unconfirmed and the person should wait til it’s confirmed.

But hey, what do I know, good luck growing your account and exit scamming before christmas

In case you haven’t noticed, ‘trusted people are known to be trusted without putting ‘trusted in their username title. All the ebook and other exit scammers do that.

lol