✅ b1exch.to - Instant Auto Exchange | NO KYC | Escrow 0.2 BTC

[tvplus006]

If you pay less than the minimum specified amount for the swap which is around 20-30 $.
It will trigger the underpaid status and you need to meet the minimum amount to continue or you can cancel the swap.

It is unclear how the smaller amount is sent for exchange, because it is indicated there when filling out. Previously, this problem was solved automatically. If the amount sent was less than the minimum amount for the exchange, it was automatically returned to the sender's address. Now the user has a choice, either to refund or to pay extra, which is more rational.

[PX-Z]

If you pay less than the minimum specified amount for the swap which is around 20-30 $.
It will trigger the underpaid status and you need to meet the minimum amount to continue or you can cancel the swap.

It is unclear how the smaller amount is sent for exchange, because it is indicated there when filling out. Previously, this problem was solved automatically. If the amount sent was less than the minimum amount for the exchange, it was automatically returned to the sender's address. Now the user has a choice, either to refund or to pay extra, which is more rational.

Those incidents happens when testing out the exchange, idk why they have to chose the almost minimum requirement amount  to send. Anyway, this is good improvement, i never saw this feature in any exchange or any financial platforms. Usually those amounts sent below the minimum is considered as donations.

[Mahiyammahi]

If you pay less than the minimum specified amount for the swap which is around 20-30 $.
It will trigger the underpaid status and you need to meet the minimum amount to continue or you can cancel the swap.

It is unclear how the smaller amount is sent for exchange, because it is indicated there when filling out. Previously, this problem was solved automatically. If the amount sent was less than the minimum amount for the exchange, it was automatically returned to the sender's address. Now the user has a choice, either to refund or to pay extra, which is more rational.

Those incidents happens when testing out the exchange, idk why they have to chose the almost minimum requirement amount  to send. Anyway, this is good improvement, i never saw this feature in any exchange or any financial platforms. Usually those amounts sent below the minimum is considered as donations.

I saw this type of Minimum Deposit requirements in some exchange. Less than minimum exchange amount do not refundable. It's good to have a refund option or pay more option on B1exchange so no one faces the financial loss.

[SamReomo]

If you pay less than the minimum specified amount for the swap which is around 20-30 $.
It will trigger the underpaid status and you need to meet the minimum amount to continue or you can cancel the swap.

In most cases the ones who swaps on the exchange may prefer to go higher than $30 per swap but in case if someone tries to swap something less than $20 can now cancel their swap and get their money back if I'm not wrong. Now, it's on a user to either meet the minimum amount or to get their crypto back, and it sounds pretty fair.

[b1ack]

Swaps are now automatically deleted after 15 days.

• Exchange-related data - including deposit addresses, destination addresses, refund addresses, amounts, and transaction identifiers - is permanently and irreversibly deleted after 15 days. This is not an archival or soft-delete process. The data is destroyed at the database level and cannot be recovered, reconstructed, or produced by b1eXch or any third party after deletion has occurred. After the 15-day retention window, swap IDs can no longer be used to look up order details. No historical record of the transaction will exist in any queryable system.

That's really cool!
But I have a purely technical question as a developer with experience in application/database development: data is not physically deleted from the database until a procedure such as “vacuum” is performed (as in PostgreSQL). In MySQL/MariaDB, the equivalent would be OPTIMIZE TABLE. My question is: do you use such mechanisms, or do you use a different database with a different mechanism for physically deleting records that have been logically deleted?
 

The VACUUM thing is really a PostgreSQL problem though. We use MariaDB with InnoDB which has a purge thread that handles cleanup automatically, no OPTIMIZE TABLE needed.

But we go further than just running a DELETE anyway. We perform a secure deletion of rows, same idea as how secure file deletion works: the data gets overwritten with random data first and only then actually deleted. So even at the storage engine level, any old page versions just contain random noise, not real swap data.

Add disk encryption at rest on top of that and there's really nothing to recover for anyone, us included.

It's very nice to hear a competent technical answer! Bravo!
Preliminary rewriting is an additional level of security. But don't forget about the “nuances” of implementation:
-the new version of the string is created inside the engine
-the old version remains in the undo log
-it is only available to other transactions if they started working earlier.
However, the old version will exist if:
- there are long transactions
- "repetable read" is used, and the default parameter in the MariaDB configuration
- someone keeps "select" open without committing

Good luck with the development of this wonderful project!

Appreciate it! You're right that undo log entries exist briefly during the transaction lifecycle, but those are purged automatically once no active transaction references them. In our case the deletion runs as a short discrete operation so there's no window for long-lived transactions to hold onto old versions. But yes, always good to be aware of those internals. Thanks for the kind words!

[b1ack]

On the other hand, I wonder if b1eXch always uses a high network rate to ensure speed, even when the normal network rate is low.
But I'll talk about that in another topic.

Following a transaction made on the platform, I would like to ask the following.

I'm wondering if b1eXch always uses the same network rate to process transactions, in order to guarantee their speed, or if it adjusts to the rates that are currently being applied?

I'm asking this because in my last transaction, where I sent BTC, I received an alert that the fee used was too low and could take a while.

He then suggested a rate 10 times higher than the one I had used.
I had used 0.20 sat/vB and received a suggestion to use 2sat/vB.

Perhaps you were guided by a block that was mined some time ago. But, in the end, the transaction went through normally within a reasonable timeframe.

Please note, I am not an expert in this type of exchange, and that is to be expected. However, it is precisely because I am not an expert that I understand these aspects.

I want to start by saying that I am not an expert in trading and I rarely use these platforms. Therefore, what I will explain below is the result of a more detailed analysis that I have done while using this platform.

Based on my limited experience using these platforms, I can say that b1exch is a simple, intuitive platform that inspires the necessary confidence for its use.

With that in mind, I would like to analyze the network fees applied, which I believe are either unclear or excessive for the operation. As mentioned in the previous post, it performs BTC > USDT (TRC20) transactions, and I got the impression that the fee charged was excessive.

So, I decided to do another test, this time in reverse: USDT (TRC20) > BTC. Even though I paid a lower network fee than the previous transaction (perhaps because the amount was also different), this amount seemed a bit high to me. I will now try to explain the analysis I did (which I admit may be wrong).

After initiating the exchange process on the platform, I sent the USDT limit (TRC20) to the indicated address. In this transaction, I paid 6.4285TRX, which at the current rate is equivalent to about $1.84.
In turn, the network fee paid for registering a BTC block totaled $0.68.

In the end, according to b1exch, I paid $4.72 in processing fees (slippage + network).

So, if the first $1.84 is paid directly into my wallet to make the transfer (here the child isn't paying for the parent), and I pay b1exch a network fee of $0.68 to make the BTC transaction, where is the extra $4?

Even assuming that b1exch wants me to pay for a future transaction to reorganize my USDT balance (TRC20), assuming the same rate (since it doesn't make sense to imagine a future rate), I would pay the $1.84. That added up to about $2.50 in network fees, almost half of what I actually paid.

Another point that caught my attention is that the BTC transaction was made with a fee of 4.56 sat/vB, almost double the average block fee.

I can understand that the rates are variable and that b1exch won't use the minimums. But using values ​​that are almost double what's necessary is also a waste of resources, both for them and for the clients.

In this regard, I suggest that the platform strive to be more balanced in the network fees applied, as well as clarify in more detail the reason for the fees used.


_{Note to the reader: I have not included transaction links here to maintain a certain level of privacy, but if necessary for a more thorough analysis, I am available to provide them.}

On the other hand, I wonder if b1eXch always uses a high network rate to ensure speed, even when the normal network rate is low.
But I'll talk about that in another topic.

Following a transaction made on the platform, I would like to ask the following.

I'm wondering if b1eXch always uses the same network rate to process transactions, in order to guarantee their speed, or if it adjusts to the rates that are currently being applied?

I'm asking this because in my last transaction, where I sent BTC, I received an alert that the fee used was too low and could take a while.

He then suggested a rate 10 times higher than the one I had used.
I had used 0.20 sat/vB and received a suggestion to use 2sat/vB.
[...]

 I remember that I used the delete function a lot after the exchange, and I remember,
 that in the exchcx, I had the option to choose the fee, in the case to receive BTC,
I had the free option, which only paid the network fee, and if I'm not mistaken,
 two more options, like, 3 sat/bit and 6 sat/bit, I always chose the free, And of course,
 it took a while... But it had these options, for BTC

 In addition, I am surprised to know that it will be automatically deleted from
the page of the exchange used.. Exch was like that too, when you didn't select
the delete option after the change was completed.

Congratulations B1EXCH!

We monitor the blockchain for optimal transaction fees that will process your transaction at proper speed.

If we see many transactions getting stuck, we increase the fees for future users. When the network clears up, fees go back to normal.

Example: Normal fee is 2 sat/vB, but we see many stuck swaps at 2 sat/vB, so we double it to 4 sat/vB for faster processing.

We show all fees beforehand - we don't just increase your fees without asking. If increased fees are required after you've started a swap, users get a popup showing the new fee. You can either accept the fee increase or cancel the swap and get a refund.

It might only be $2, but we want to be transparent about everything.

[joker_josue]

Since you have done this transaction, I just want to know if it is possible to see the estimated cost or fee in advance when converting from USDT to BTC.

As I said, I generally only use BTC. I only use other cryptocurrencies during this experimental period. So I don't have much knowledge of how they all work.

I found a website that indicates the fee, I don't know how accurate it is. But it confirms the amount paid in my transaction.
https://coin.space/tron-network-fee/

Now, I also don't know if it's possible to edit that fee or not. In the wallet I used, I didn't find that function, so I'm not sure how it works specifically.

We monitor the blockchain for optimal transaction fees that will process your transaction at proper speed.

If we see many transactions getting stuck, we increase the fees for future users. When the network clears up, fees go back to normal.

Example: Normal fee is 2 sat/vB, but we see many stuck swaps at 2 sat/vB, so we double it to 4 sat/vB for faster processing.

We show all fees beforehand - we don't just increase your fees without asking. If increased fees are required after you've started a swap, users get a popup showing the new fee. You can either accept the fee increase or cancel the swap and get a refund.

It might only be $2, but we want to be transparent about everything.

First of all, I'm not saying that you aren't transparent with the information. I knew what the network fee would be before initiating the exchange; that information was readily available.

Therefore, I didn't question not knowing the fee. Because I knew. What I questioned was why the network fee was so high, considering the values ​​normally used.

The point was that the amounts indicated and charged were almost double the amounts actually paid in the sum of the two transactions. And one of those transactions I paid directly.

Either way, I'm not questioning transparency. The information provided beforehand is up to each user to decide whether to continue or not. They deserve praise for that.

I just think that if the entire network fee is actually spent on the transaction, it seems to me that they are paying extra fees.

Note, I am not an expert on this matter; I am only basing my information on what appears on the blockchain of the networks. I admit that there may be other things I am unaware of, as I am not used to using cryptocurrencies other than BTC. I could be completely wrong.

Ultimately, what I'm looking for is a logic behind these network fee values.

[b1ack]

Since you have done this transaction, I just want to know if it is possible to see the estimated cost or fee in advance when converting from USDT to BTC.

As I said, I generally only use BTC. I only use other cryptocurrencies during this experimental period. So I don't have much knowledge of how they all work.

I found a website that indicates the fee, I don't know how accurate it is. But it confirms the amount paid in my transaction.
https://coin.space/tron-network-fee/

Now, I also don't know if it's possible to edit that fee or not. In the wallet I used, I didn't find that function, so I'm not sure how it works specifically.

We monitor the blockchain for optimal transaction fees that will process your transaction at proper speed.

If we see many transactions getting stuck, we increase the fees for future users. When the network clears up, fees go back to normal.

Example: Normal fee is 2 sat/vB, but we see many stuck swaps at 2 sat/vB, so we double it to 4 sat/vB for faster processing.

We show all fees beforehand - we don't just increase your fees without asking. If increased fees are required after you've started a swap, users get a popup showing the new fee. You can either accept the fee increase or cancel the swap and get a refund.

It might only be $2, but we want to be transparent about everything.

First of all, I'm not saying that you aren't transparent with the information. I knew what the network fee would be before initiating the exchange; that information was readily available.

Therefore, I didn't question not knowing the fee. Because I knew. What I questioned was why the network fee was so high, considering the values ​​normally used.

The point was that the amounts indicated and charged were almost double the amounts actually paid in the sum of the two transactions. And one of those transactions I paid directly.

Either way, I'm not questioning transparency. The information provided beforehand is up to each user to decide whether to continue or not. They deserve praise for that.

I just think that if the entire network fee is actually spent on the transaction, it seems to me that they are paying extra fees.

Note, I am not an expert on this matter; I am only basing my information on what appears on the blockchain of the networks. I admit that there may be other things I am unaware of, as I am not used to using cryptocurrencies other than BTC. I could be completely wrong.

Ultimately, what I'm looking for is a logic behind these network fee values.

Can you give me an example scenario ? or your past swap ?
So I can explain much better.

[joker_josue]

Can you give me an example scenario ? or your past swap ?
So I can explain much better.

The case I analyzed is outlined here:
https://bitcointalk.org/index.php?topic=5571363.msg66432604#msg66432604
https://bitcointalk.org/index.php?topic=5574574.msg66432893#msg66432893

I'm referring to the processing fee, which, from what I understand, is the fee paid for transactions on the network.

[bitmover]

Can you give me an example scenario ? or your past swap ?
So I can explain much better.

The case I analyzed is outlined here:
https://bitcointalk.org/index.php?topic=5571363.msg66432604#msg66432604
https://bitcointalk.org/index.php?topic=5574574.msg66432893#msg66432893

I'm referring to the processing fee, which, from what I understand, is the fee paid for transactions on the network.

The best way to see if you overpaid a mining fee is to look for the tx id  in mempool.space explorer. So you can search for your transactions there and confirm if it was overpaid or not.

It will show if the fee was optimal or overpaid. For example, this one overpaid by more than 30x (random transaction, not from b1exch.io)
https://mempool.space/pt/tx/72f335a17e062419acd8113b93357249250671f4a2aa4adbe141b0e171ab7054?mode=details

However,  as b1ack mentioned, getting a swap stuck when trying to pay optimal fee isn't a good idea. It is good to overpay a little bit and spend a few extra cents and offer a better user experience.

[b1ack]

Can you give me an example scenario ? or your past swap ?
So I can explain much better.

The case I analyzed is outlined here:
https://bitcointalk.org/index.php?topic=5571363.msg66432604#msg66432604
https://bitcointalk.org/index.php?topic=5574574.msg66432893#msg66432893

I'm referring to the processing fee, which, from what I understand, is the fee paid for transactions on the network.

PM me the swap ids.

[joker_josue]

However,  as b1ack mentioned, getting a swap stuck when trying to pay optimal fee isn't a good idea. It is good to overpay a little bit and spend a few extra cents and offer a better user experience.

I'm not questioning that, and it makes sense that it is that way.
Even so, the actual fee paid for the transaction was much lower than what was stipulated to be paid. As you can see from the description I wrote.

PM me the swap ids.

Sent.
Thank you for your availability. 

[Dareo]

I just went to try a swapping. And I was visiting from my phone, so it seemed to me that the website is not very responsive for mobile devices. Because the navigation menus are visible without clicking the navigation buttons (when I zoom out). For the sake of information, I was using the Brave browser. Is this just happening to me or to anyone else?

[SamReomo]

I just went to try a swapping. And I was visiting from my phone, so it seemed to me that the website is not very responsive for mobile devices.

I've not yet visited b1exch from my mobile device but from experience I can say that there're only a few sites that are designed for mobile users, most of the sites mainly target desktop or laptop users. Hope, there might be an update which may fix responsiveness issues for mobile devices.

[PX-Z]

I just went to try a swapping. And I was visiting from my phone, so it seemed to me that the website is not very responsive for mobile devices.

I've not yet visited b1exch from my mobile device but from experience I can say that there're only a few sites that are designed for mobile users, most of the sites mainly target desktop or laptop users. Hope, there might be an update which may fix responsiveness issues for mobile devices.

That is an issue way back before (almost a month ago already) when i used to test that site, so it seems it's still not resolved. Probably the admin is prioritizing the technical side of the site, related to coins, fee calculations. As for site's targeting users based on device info, i don't really agree since most users now browse on mobile, and even TOR already has mobile versions too..

[SamReomo]

That is an issue way back before (almost a month ago already) when i used to test that site, so it seems it's still not resolved. Probably the admin is prioritizing the technical side of the site, related to coins, fee calculations. As for site's targeting users based on device info, i don't really agree since most users now browse on mobile, and even TOR already has mobile versions too..

Well, to be honest, a decentralized, no KYC platform first gives priority to members who use desktop or laptop operating systems. Those systems are mostly used by the whales and institutional level investors. I won't disagree with you when it comes to number of users on mobile devices but most platforms at start mainly target those members who use desktop version of the site.

Once desktop version is properly working and all technical things become okay and bugs get fixed then they shift their focus to make the website more responsive and that's when they spend their time to improve the mobile version of the website. I might be wrong, but from my experience I can say that most platforms first begin with desktop version of site.

[cryptofrka]

The system doesn't require the exact amount to be sent.

The amount input field is mainly there to warn you about crossing pool limits.

The system will handle any amount you send and adjust accordingly, as long as there's enough liquidity and you don't send less than the minimums.

I will try this later on today, I'm curious whether it will still trigger the 'underpaid' message.

If you pay less than the minimum specified amount for the swap which is around 20-30 $.
It will trigger the underpaid status and you need to meet the minimum amount to continue or you can cancel the swap.

Finally tried this today, quoted 0.52 ETH and sent 0.5 on purpose, worked as intended without the 'underpaid' message popping up.
Quite happy with this, makes things a lot easier in some cases.

[buwaytress]

Hey, got a question for you guys. I'd asked in a different thread but thought to check in here for more visibility. So it's regarding a pre-created quote (what I'm assuming is the backorder mentioned in the FAQ).

Say I request a quote, this generated a deposit address. Would I be able to simply save this address and then make my spend 2 or 3 days, or even a week later? Will the swap still happen? Obviously at the new rate, not the quoted one. I'm just curious, as this gives a bit of flexibility. For example, I could backorder for several different deposit addresses, and give these out to people who want to pay me in these currencies, ensuring I receive BTC to my wallet.

e.g. Brian wants to pay me LTC, Jane wants to give me XMR. I create quotes on b1exch for LTC-BTC and XMR-BTC swaps, and give the generated deposit addresses to Brian and Jane.

Or, to ask in a different way: "do deposit addresses expire?" What happens if I send crypto to a deposit address generated later? Can it be used more than once?

[Yamane_Keto]

Or, to ask in a different way: "do deposit addresses expire?" What happens if I send crypto to a deposit address generated later? Can it be used more than once?

I don't think that would be a good idea. the transaction won't be processed, and you might need to contact support for a refund.

If a late deposit is detected, you will be prompted to provide a refund address. b1eXch is not obligated to monitor expired deposit addresses indefinitely.

Creating a new transaction doesn't take much time.

[joker_josue]

Say I request a quote, this generated a deposit address. Would I be able to simply save this address and then make my spend 2 or 3 days, or even a week later? Will the swap still happen? Obviously at the new rate, not the quoted one. I'm just curious, as this gives a bit of flexibility. For example, I could backorder for several different deposit addresses, and give these out to people who want to pay me in these currencies, ensuring I receive BTC to my wallet.

I remember reading somewhere that the exchange is active for 24 hours.
So if it doesn't send in that time, I believe it won't be executed.

Now, this does not invalidate you from making your example, since you both page in that time frame.