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I created a Blockchain.info paper wallet back in 2014. At the time I used a passphrase which only contained 8 words as the recovery seed as per the instructions. When I try to scan the public key QR code in order to check the balance I get the following "http://qr-to/banAvd". The public key is "13gmfrUCaRB1dZB2RftmoDVYd7jjSyhq32".

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    and what is the question itself? your 13gmf... is neither public key nor valid bitcoin address. we are happy that you did something wrong three years ago but this information is absolutely useless – amaclin Aug 28 '17 at 21:14
  • Could be one of several formats and compressions for public key. The sure way is to figure it out from the private key. – marshal craft Aug 28 '17 at 22:19
  • @ amaclin is it not a 33 char address base 58? – marshal craft Aug 28 '17 at 22:21
  • @mc my english is poor, aren't you understand my comment above? there is no question, no info, no clues, but some garbage and broken link. – amaclin Aug 28 '17 at 22:25
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    the correct address is 13gmfrUCaRB1dZB2RftmoDVYd7jjSyhq32 – amaclin Aug 28 '17 at 23:01
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I think it is a public key in a common 33 byte compressed form. I generated an address from it

12r9cntQ5T8o6mELxxcj1RwBZiKGVV

to check the balance and bitref says it has 0.0 bitcoins sent or received.

Also zero transactions for that wallet.

  • What service did you use to generate an uncompressed public key? I haven't found one – Andrey Aug 28 '17 at 22:52
  • I think the guys is confused. That's why the easiest way for him is to import the paper wallet into a desktop wallet using the private key. That is, if he has ever actually transferred the bitcoin there :) – Andrey Aug 28 '17 at 22:55
  • I find blockchain does not work with the public key, but the address. I used a site first to hash 160 the compressed public key, then use hash to generate an address for the purpose of checking balance. bitcoinvalued.com/tools.php – marshal craft Aug 28 '17 at 22:55
  • Blockchain does indeed work with uncompressed public keys, but it dies not work with compressed ones. – Andrey Aug 28 '17 at 22:57
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From amaclin's comment about one digit missing in your public address above, you can checs your balance here (BTC 0.01840202): https://bitref.com/13gmfrUCaRB1dZB2RftmoDVYd7jjSyhq32

After that you can do the following:

  1. Download and install any bitcoin desktop wallet. e.g. Electrum (https://electrum.org/#home)
  2. Import your PRIVATE KEY that you find in your paper wallet into that Electrum wallet. It will show you the balance and allow to move the money to another paper wallet or an exchange (if you want to sell it)

IMPORTANT: as your bitcoin is pre-split (which happened earlier in August) that private address that you have also contains an equal amount of Bitcoin Cash. These are the steps I went thru to get mine: Where to split BTC

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    this is not a "compressed public key", but an address without one symbol at the end – amaclin Aug 28 '17 at 23:02
  • When I attempt to import the private key from my blockchain.info paper wallet into my bitcoin core wallet an error occurs "invalid key". Any Ideas? – Robert Rocca Sep 6 '17 at 21:52
  • The length of my blockchaininfo paper wallet private key starts with a "5". The total length including characters and numbers is 50. Shouldn't it be 51? Confused. – Robert Rocca Sep 7 '17 at 23:39
  • That's correct, it should start with 5 and it has a length of 51 characters total. Did you print it out or wrote down by hand? Could you have missed the last character? You can try brute force add a 51st character trying 0-9 and a-z – Andrey Sep 7 '17 at 23:42
  • I used a printer. Brute forcing the last character did not work. Also, I have tried the mnemonic (8 words) that can be used to recover the password on "blockchain.info/wallet/recover-wallet" however it also fails. – Robert Rocca Sep 9 '17 at 19:01

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