I know this bounty is old, but I think blockchain.info meets the requirements to claim it.

Orphaned Block tracking:

http://blockchain.info/orphaned-blocks

Live list of unconfirmed transaction, if any double spends are detected they will be marked.

http://blockchain.info/unconfirmed-transactions (available in JSON with ?format=json)



Double spend list:

http://blockchain.info/double-spends

Thanks

Site back up. Took a bit longer than expected - changing the schema on a table with 5.5 million rows is not quick. The database will now be able to support n-of-m and pay to script transactions - I'll be implementing support in the coming days.

Thanks for the good feedback all.

I do not see much point in having a checksum on private keys. However since it is becoming the standard, I am gradually adding better support and will make it an optional default.


I downloaded the latest maxmind database, but now it thinks your in Austria. It is the free version so maybe that is the reason http://www.maxmind.com/app/geolitecity.


A bit of both. Native view for Transactions, My Addresses and Qr code support. But the send transaction uses the web interface.

New Features

You can now import Multibit wallet files into My Wallet.

Faster ledger generation for large addresses (Still a bit slow) http://blockchain.info/address/1VayNert3x1KzbpzMGt2qdqrAThiRovi8 compared to http://blockexplorer.com/address/1VayNert3x1KzbpzMGt2qdqrAThiRovi8

I will be taking the Site down at about 1:00 am GMT tonight in order to make some database changes needed for multi-sig support.

I'm not sure. I use Maxmind's geo-ip database to lookup locations, maybe it needs updating (Or possibly some has stolen your servers and collocated them in Kazahkstan?

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Apple are taking their sweet time with the iPhone app. What would My Wallet users rather see Multi-sig transactions or Wallet.dat import/export?

Thanks, I've added both ips. The mystery still remains which pool 88.6.221.179 belongs to.

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I've put up a tool to Decrypt My Wallet backups offline (incase the site goes offline for any reason).

http://blockchain.info/DecryptWallet.html

http://pastehtml.com/view/blubcjzgc.html

Save it to your hard drive or in your Blockchain.info dropbox folder.

This is an excellent idea. It would give everyone in the network network a longer time to upgrade. Also voting process should be standardised so you include a BIP number e.g. "/BIP_0016/" rather than "/P2SH/" or "CHC" etc.

Thanks

No that wasn't intentional. It should be fixed now.

I've added automatic dropbox backups - pending app approval from dropbox.com which can take up to 48 hours.

More Info: https://blockchain.info/wallet/backups

Also added a page on anonymity:

https://blockchain.info/wallet/anonymity

You can now Label Addresses and remove entires from the address book.

At approx 12:00PM today I accidentally pushed an update to My Wallet which was not supposed to be committed and contained a fairly severe bug. It is possible if you generated or deleted any keys between 12:00 Noon to 8:00 PM GMT some keys may not have been properly backed up.

If you were using My Wallet during this time please double check all your addresses and BTC is accounted for. I have a wallet backup from a few hours before and one at 14:00 PM so it highly probably any missing keys can be recovered.

If you are missing any keys please contact me at support@pi.uk.com. Sorry for any inconvenience.

This usually happens when one of my nodes is lagging a bit behind on the latest block or when there is conflicting orphaned blocks.

If you search for the transaction hashes most of them are accepted shortly after.

Can a pool operator please mine a block containing a P2SH transaction on main net and redeem it. I'd like to a do some P2SH preperation, but don't have Testnet setup.

Yes that is the largest. Top 5:

1) 550,000 BTC

2) 500,020 BTC

3) 499,743 BTC

4) 499,660 BTC

5) 499,620 BTC

https://en.bitcoin.it/wiki/BIP_0011.

Hi, You can use http://blockchain.info/address-balance-sheet

Or sign up to My Wallet and add your addresses (You don't need to add private keys).

Your right I can't find it in the spec now either. Some mention on http://dev.w3.org/html5/spec/iana.html perhaps they have depreciated it http://lists.w3.org/Archives/Public/public-html/2011Aug/0397.html.

Put up a test page here:

http://blockchain.info/uri

bitcoin: registered with Firefox 9 - Chrome 16 would only register web+bitcoin:

Yeah in order to register a custom scheme with your browser it must start with web+

In order to be compatible with the w3 spec for custom url schemes it would be good if the chosen URI was prefixed with web+ e.g.

web+bitcoin://

Then you can have your favourite website, not just desktop software, register itself as the bitcoin protocol handler.

Oops, unexpected side affect - should now only round on the homepage.