Topic: Need dev advise : btc payment processing/forwarding with low fees (web-based) (Read 167 times)

تصليح افران الغاز بالرياض
تُعد كلينر هوم الخيار الأمثل لخدمات تصليح افران الغاز بالرياض، حيث تقدم مجموعة متكاملة من الخدمات التي تضمن كفاءة عالية وأمان تام لأفران الغاز. تلتزم الشركة بتقديم خدمات صيانة شاملة تُلبي احتياجات العملاء بأعلى مستويات الاحترافية، سواء كانوا في شمال أو جنوب الرياض.

تشمل خدمات الصيانة الوقائية فحصًا دقيقًا لجميع مكونات الأفران مثل الشعلات، المفاتيح، والأنابيب، بالإضافة إلى تنظيف شامل للأجزاء الداخلية والخارجية لإزالة الشحوم والرواسب التي قد تؤثر على الأداء.

في حال ظهور أي مشكلة، نحن نقدم لك خدمات الصيانة التصحيحية التي تتضمن إصلاح الأعطال واستبدال الأجزاء التالفة بقطع غيار أصلية عالية الجودة. تعتمد الشركة على استخدام أحدث الأدوات لضمان إصلاح سريع ودقيق يعيد الفرن إلى حالته المثالية.

تتميز شركة تصليح افران بالرياض أيضًا بأسعار تنافسية وشفافة، حيث تقدم تقديرات واضحة للتكاليف قبل بدء العمل. كما يتمتع الفريق بالمرونة في تحديد مواعيد الصيانة وفقاً لجدول العميل، مما يضمن الراحة والمرونة في تقديم الخدمة.

بالإضافة إلى ذلك، تقدم الشركة دعمًا فنيًا متواصلاً واستشارات سريعة لحل أي مشكلة قد تواجه العملاء. فقط يمكنك التواصل معنا من حلال الرقم 0583861846 واحصل على افضل خدمات صيانة الأفران بالرياض على الإطلاق.

https://cleanerrr.com/%D8%AA%D9%86%D8%B8%D9%8A%D9%81-%D9%88%D8%B5%D9%8A%D8%A7%D9%86%D8%A9-%D8%A3%D9%81%D8%B1%D8%A7%D9%86-%D8%A8%D8%A7%D9%84%D8%B1%D9%8A%D8%A7%D8%B6/">شركة تنظيف افران بالرياض

On theory, it's good. But in practice,
1. Only some wallet support PSBT or similar mechanism.
2. Few crap wallet doesn't have feature send to multiple address in an TX.

There's reason why PayJoin (which pose few similarity with your idea) still not popular.

Helly everyone, thanks alot for all your feedback.




Other thing i should mention is that im not a web dev but rather a web designer, so i would need to find a freelancer, thats why i would also think that payment processor like bitpay or coinpayments(.net) are a good option too because i dont want to rely on the programming skills of a random freelancer to keep my funds safe. Those processors would charge around 1% comission too but i guess this would be the more safer but less customizable choice.

When im correct the payment processore like bitpay etc. would create a new segwit address for every order and i should be possible for me to transfer out all the small commissions (after i made a few sales) from all the wallets into one single single tx (so that i only bay a tx fee once instead of one time per address). Am i correct here?


I also have to calculate this whole matter further because its also very hard to run such a ppd service with bitcoin without a minimum Sales price for the seller. When i would need a make more than 1 tx for a sale with a price of 5USD (set from seller) than every (cheap) item listed would look like a ripoff because i would have to calculate my losses from fees into every order. I also want to serve people who are not selling expensive stuff.


thanks alot for the input.  Would definitely be a cool idea with the early downloads but how exactly would you continue in my case from a programming standpoint?

Confirming/tracking a new incoming tx and showing the user/buyer a download link afterwards would be relatively easy with premade payment processors like bitpay or coinpaymentsDotNet etc or would you always go with a integration of electrum to the server or hosting an own bitcoin node or anythign like that?



Youre right, of course the user/buyer just needs to make one tx to buy something. The second tx where i move my commission to my personal wallet also doesnt need to be automatical.
I think it would be best, if i wait untill i collects a few dollar in total on multiple addresses so that i can combine everything into 1 tx when im moving it to my personal wallet - so that i dont wipe out 50% of a wallet's balance when my commission was very small for that particular sale.


And my apologies for all the typos and noob questions i put into this reply

It is possible to allow UTXO picking, and prepare an unsigned transaction for the user. Then, it is only a matter of signing it.

1. Pick your UTXOs.
2. Copy-paste an unsigned transaction.
3. Broadcast it to the network.

You won't underpay/overpay, if you will receive already prepared unsigned transaction, where you can check everything, in a similar way, as it is displayed by block explorers.

Edit: Also, in case of unsigned transactions, it is possible to prepare partially signed transaction upfront, and accumulate dust in a safe way. For example:

1. You have many UTXOs, which you want to combine into a single one.
2. You sign each UTXO with SIGHASH_ANYONECANPAY, and put a negative fee, by picking some of your prices.
3. You upload your transactions to your server.
4. Later, some user visits your site, and picks a new UTXO.
5. You will give him a transaction, which will allow receiving a payment, and accumulating dust, at the same time.

For example, you start with uploading this signed transaction:
And then, some user can just visit your site later, and complete it, without invalidating prepared signatures:

It's valid approach. But from my experience paying for goods/services, i never required to send Bitcoin to 2 or more addresses at once. There's also concern about user friendliness and handling underpay/overpay.

Just make a single transaction:
Getting a single confirmation can unlock the link to download the content.

Or, even better: it is possible to allow downloading everything in encrypted form first, and broadcast the decryption key, after reaching a single confirmation. And everything can be just encrypted by OP's public key (so it would be possible to prove in a SCIP way if needed, that this very key can decrypt it).

That's true, but OP still need to create TX which send the Bitcoin to seller.



In this case, how would automatic forward to seller works?

Fees are paid by the sender. If you are just receiving funds, then you don't have to pay anything.

You don't have to store any private keys on your server. First, you generate your seed on your own computer, and then, you upload only the master public key to the server. Then, the only thing a hacker can do, is to compromise your privacy in the worst case, by getting the full list of addresses. But: it will never get your private keys, if they will not be available online.

FYI, there are many websites which offer same/similar feature such as SatoshiDisk.


In addition, it can be used to perform batching transaction when OP's hot wallet receive multiple deposit in short interval.

You can send to multiple addresses in a single transaction.


If you don't want to run a node or have a hot wallet, then your only choice is to go with a payment processor such as Bitpay or Coinbase.

Hello guys,

this is my first post and i hope that im in the correct section to ask for some advise.

Im currently in the very early stages of creating a simple PPD (pay per download) site, where a user can basically upload and sell small digital files. I would want to take a small commission of max. 5%.

So the most important part of the website would be to receive the payment from the customer to a newly generated SegWit and forward 95% automatically to the seller and eventually transfer the 5% earning to my personal wallet.

The biggest issues im seing with btc are the fees because when im thinking correctly, than i would have to do 2 transactions on every sale (1tx to to seller and one tx to transfer my 5% commision from the generated address to my personal wallet) or is there any way to avoid this issue?

A possible workaround would be payment processors like coinpayments or blockonomics but i dont have experience if it would work good with the forwarding(twice) after a payment got received.


I personally dont really want a hotwallet or bitcoin node of some sort because the project would be too expensive and i dont want to create weaknesses that can get hacked.

I hope that maybe someone here would have an idea on how to handle the payment situation in my case? How would you do i with without spending too much on fees or even running an own btc node?

Thanks in advance