Something my blockchain.info wallet did

[Uberse]

Using MyEtherWallet, I swapped some bitcoin for augur reps, and sent the bitcoin from my blockchain.info wallet. The swap happened fine, and my new bitcoin total is shown correctly in my wallet. However, all of the bitcoin in the address I sent the bitcoin from were moved simultaneously to a new address that does not show up in my list of present wallet-addresses, and cannot be found by using the BIP39 mnemonic code-generator. I know all the money is there, but I'm just curious as to what happened.

[BittBurger]

Best to contact their customer support.   Be patient because the guy who mans their support emails isn't always the nicest.

-B-

[pinkflower]

Sometimes a simple logout then login back again will solve your problem. Blockchain.info's web interface is sometimes slow especially in low end computers and laptops.

If that does not work, do what BittBurger said.

[Uberse]

To quote Emily Litella: Nevermind!

It was just the normal wallet function of sending 'unspent outputs' to a 'determinstically generated' 'change address.' Read all about it here: http://bitzuma.com/posts/five-ways-to-lose-money-with-bitcoin-change-addresses/

The money is of course fully available for my use.

[squatter]

To quote Emily Litella: Nevermind!

It was just the normal wallet function of sending 'unspent outputs' to a 'determinstically generated' 'change address.' Read all about it here: http://bitzuma.com/posts/five-ways-to-lose-money-with-bitcoin-change-addresses/

The money is of course fully available for my use.

Indeed I was about to reply that it's just a change address. This is how Bitcoin is intended to work. With some wallets (like Electrum), you can choose not to use change addresses. In that case, the "change" from any payment you send will generally be sent back to the original address (or one of the original addresses) that held the UTXOs.

It is usually recommended to use change addresses for security purposes: once you sign a transaction using a public key's address, it makes the private key ever-so-slightly more easy to crack. It's always best to use new addresses every time you send a transaction.

[Uberse]

To quote Emily Litella: Nevermind!

It was just the normal wallet function of sending 'unspent outputs' to a 'determinstically generated' 'change address.' Read all about it here: http://bitzuma.com/posts/five-ways-to-lose-money-with-bitcoin-change-addresses/

The money is of course fully available for my use.

Indeed I was about to reply that it's just a change address. This is how Bitcoin is intended to work. With some wallets (like Electrum), you can choose not to use change addresses. In that case, the "change" from any payment you send will generally be sent back to the original address (or one of the original addresses) that held the UTXOs.

It is usually recommended to use change addresses for security purposes: once you sign a transaction using a public key's address, it makes the private key ever-so-slightly more easy to crack. It's always best to use new addresses every time you send a transaction.

There is one thing though that puzzles me a bit: using my 12-word wallet-recovery phrase in the BIP39 phrase generator, I cannot find the change address. I'm wondering if it is just buried thousands of addresses down or if the wallet uses another phrase. I'd prefer to have the private keys of all my addresses in the wallet, and right now I do not have that, and the change address is the one with the most money in it.

[crairezx20]

To quote Emily Litella: Nevermind!

It was just the normal wallet function of sending 'unspent outputs' to a 'determinstically generated' 'change address.' Read all about it here: http://bitzuma.com/posts/five-ways-to-lose-money-with-bitcoin-change-addresses/

The money is of course fully available for my use.

Indeed I was about to reply that it's just a change address. This is how Bitcoin is intended to work. With some wallets (like Electrum), you can choose not to use change addresses. In that case, the "change" from any payment you send will generally be sent back to the original address (or one of the original addresses) that held the UTXOs.

It is usually recommended to use change addresses for security purposes: once you sign a transaction using a public key's address, it makes the private key ever-so-slightly more easy to crack. It's always best to use new addresses every time you send a transaction.

There is one thing though that puzzles me a bit: using my 12-word wallet-recovery phrase in the BIP39 phrase generator, I cannot find the change address. I'm wondering if it is just buried thousands of addresses down or if the wallet uses another phrase. I'd prefer to have the private keys of all my addresses in the wallet, and right now I do not have that, and the change address is the one with the most money in it.

If you can still transfer your bitcoin i think better to use other wallet instead like electrum since that the address from blockchain is changes better to transfer it to other wallet like electrum that you can backup the private keys for safety purposes..
Blockchain right now looks the same as coinbase that changes the address the same but the amount of bitcoin still in your wallet..
However blockchain are still trusted since its a long time web wallet and there are many bitcoin users are still using it.. since its an online wallet and we do not know when this site will down much better to transfer your funds in other wallet which is you can both backup 12 words seeds and private keys..

[Uberse]

To quote Emily Litella: Nevermind!

It was just the normal wallet function of sending 'unspent outputs' to a 'determinstically generated' 'change address.' Read all about it here: http://bitzuma.com/posts/five-ways-to-lose-money-with-bitcoin-change-addresses/

The money is of course fully available for my use.

Indeed I was about to reply that it's just a change address. This is how Bitcoin is intended to work. With some wallets (like Electrum), you can choose not to use change addresses. In that case, the "change" from any payment you send will generally be sent back to the original address (or one of the original addresses) that held the UTXOs.

It is usually recommended to use change addresses for security purposes: once you sign a transaction using a public key's address, it makes the private key ever-so-slightly more easy to crack. It's always best to use new addresses every time you send a transaction.

There is one thing though that puzzles me a bit: using my 12-word wallet-recovery phrase in the BIP39 phrase generator, I cannot find the change address. I'm wondering if it is just buried thousands of addresses down or if the wallet uses another phrase. I'd prefer to have the private keys of all my addresses in the wallet, and right now I do not have that, and the change address is the one with the most money in it.

If you can still transfer your bitcoin i think better to use other wallet instead like electrum since that the address from blockchain is changes better to transfer it to other wallet like electrum that you can backup the private keys for safety purposes..
Blockchain right now looks the same as coinbase that changes the address the same but the amount of bitcoin still in your wallet..
However blockchain are still trusted since its a long time web wallet and there are many bitcoin users are still using it.. since its an online wallet and we do not know when this site will down much better to transfer your funds in other wallet which is you can both backup 12 words seeds and private keys..

I'm not sure it is accurate to call blockchain.info a web wallet because they do not keep your password, and they do provide you with the 12-word seed that can recover your wallet if you forget the password. It's nothing like keeping it in an exchange, which is why it is so popular. It seems on par with electrum, at least.

[HCP]

There is one thing though that puzzles me a bit: using my 12-word wallet-recovery phrase in the BIP39 phrase generator, I cannot find the change address. I'm wondering if it is just buried thousands of addresses down or if the wallet uses another phrase. I'd prefer to have the private keys of all my addresses in the wallet, and right now I do not have that, and the change address is the one with the most money in it.

Receive and Change addresses exist on two separate "paths" in an HD wallet using BIP44... They are more correctly known as "External" and "Internal". External being the receive addresses which are used for sending and receiving coins from external sources... and Internal are the change addresses which should only ever be used internally by the wallet for catching change amounts from transactions.

On the BIP39 Mnemonic Code Convertor (https://iancoleman.github.io/bip39/ - use offline copy etc)... if you put your 12 word recovery phrase in... by default it will use BIP44 with the derivation path m/44'/0'/0'/0, that shows "External" (aka Receive) addresses... set the External/Internal value to 1 (derivation path: m/44'/0'/0'/1) and you will get "Internal" (aka Change addresses)

[Uberse]

There is one thing though that puzzles me a bit: using my 12-word wallet-recovery phrase in the BIP39 phrase generator, I cannot find the change address. I'm wondering if it is just buried thousands of addresses down or if the wallet uses another phrase. I'd prefer to have the private keys of all my addresses in the wallet, and right now I do not have that, and the change address is the one with the most money in it.

Receive and Change addresses exist on two separate "paths" in an HD wallet using BIP44... They are more correctly known as "External" and "Internal". External being the receive addresses which are used for sending and receiving coins from external sources... and Internal are the change addresses which should only ever be used internally by the wallet for catching change amounts from transactions.

On the BIP39 Mnemonic Code Convertor (https://iancoleman.github.io/bip39/ - use offline copy etc)... if you put your 12 word recovery phrase in... by default it will use BIP44 with the derivation path m/44'/0'/0'/0, that shows "External" (aka Receive) addresses... set the External/Internal value to 1 (derivation path: m/44'/0'/0'/1) and you will get "Internal" (aka Change addresses)

I followed your clear instructions and there it was! Thank you so much.