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Title: why do i get two different QR for the same address? Post by: pooya87 on July 14, 2015, 03:09:49 PM two different block explorer give two different QR
here is from blockchain.info (https://blockchain.info/address/1BitmixerEiyyp3eTLaCpgBbhYERs48qza) https://blockchain.info/qr?data=1BitmixerEiyyp3eTLaCpgBbhYERs48qza&size=200 imgur link because it didn't show direct from bc.i !! : https://i.imgur.com/kUhsKLi.png here is same address from btc.blockr.io (http://btc.blockr.io/address/info/1BitmixerEiyyp3eTLaCpgBbhYERs48qza) http://btc.blockr.io/api/v1/address/Qr/1BitmixerEiyyp3eTLaCpgBbhYERs48qza Title: Re: why do i get two different QR for the same address? Post by: 98problems on July 14, 2015, 03:50:44 PM what is the difference? when you check it it shows the same address isnt it? so i dont think it makes any problem
Title: Re: why do i get two different QR for the same address? Post by: pooya87 on July 14, 2015, 03:59:46 PM what is the difference? when you check it it shows the same address isnt it? so i dont think it makes any problem i don't know, don't have anything to check them. i was trying to place my QR somewhere that i realized the two block exploreres that i use give me two different .... shapes .... is it even possible that the two different QR are the same thing?! Title: Re: why do i get two different QR for the same address? Post by: ikydesu on July 14, 2015, 04:26:45 PM The QR code is show the same address.
I've already scan with Mycelium. Maybe because the generator QR code from different site CMIIW. Title: Re: why do i get two different QR for the same address? Post by: vendetahome on July 14, 2015, 05:20:12 PM i just scanned it with my phone qr scanner and it shows the same address of bitmixer, though im imrpresses that different codes can have the same meaning
Title: Re: why do i get two different QR for the same address? Post by: Xialla on July 14, 2015, 07:30:53 PM because even both codes contains same information, they're both using different version of QR symbol.
for details please refer to: https://en.wikipedia.org/wiki/QR_code (actually, pretty nice explanation here) based on you screens, it seems that first picture from bc.i is version 3 and second one from blockr.io is from version 4. codes looks different, each version using different amount of modules (higher version, more modules), so also code (what you see) is different.. Title: Re: why do i get two different QR for the same address? Post by: ShetKid on July 16, 2015, 01:58:35 PM because even both codes contains same information, they're both using different version of QR symbol. for details please refer to: https://en.wikipedia.org/wiki/QR_code (actually, pretty nice explanation here) based on you screens, it seems that first picture from bc.i is version 3 and second one from blockr.io is from version 4. codes looks different, each version using different amount of modules (higher version, more modules), so also code (what you see) is different.. If they are using different generators then how do different interpreters know which generator has been used to decrypt the QR to give an address ? Wouldn't different generators have different address for both QR codes ? Title: Re: why do i get two different QR for the same address? Post by: OnkelPaul on July 16, 2015, 02:07:45 PM If they are using different generators then how do different interpreters know which generator has been used to decrypt the QR to give an address ? Wouldn't different generators have different address for both QR codes ? No, QR code is defined such that you can encode your information differently, but decoding will always result in the same information that you encoded (and the decoder will know how you encoded stuff, because that's part of the encoding). For example, you may specify different amount of error correction info, so the total number of bits (small squares) in the QR code is different, but the actual encoded info is the same. This is especially useful when you intend the QR code to be printed out on paper that may become dirty or slightly damaged. For display on a computer screen, you don't need to add much error correction. QR is a pretty slick invention :-) Onkel Paul Title: Re: why do i get two different QR for the same address? Post by: everaja on July 16, 2015, 02:09:58 PM different qr images for the same wallet address is because of the different generators(encoding) used to generate that QR Images , if you use request for same wallet QR code from different IP address , each time you will get different QR images but all of them will point out to the same wallet address..
in short it is because of the different generators(encoders) used at the time of processing requested QR images. |
