10W刀！哈哈

前期种种可疑点，不知从哪冒出来的团队，但从技术角度看，产品还是花了些功夫，结合JD现状，LD说不定会牛逼一把，IPO时没注意，擦

gettimeofday() is a non-thread safe function, I think here should add mutex lock.

Double spending，建议翻译为“多重花费”，比较准确

支持，不过对采访对象收费很奇怪

1.  ASICS killing BTC ? 参见： https://bitcointalk.org/index.php?topic=248828.0

2. 比特币的分布不是楼主想象的那样的： http://bitcoinlead.org/t/4433

过度追捧大数据，像股评文章，技术细节不甚了解，不接地气。

比特币的交易数据相对杂乱。现在银行、电商、医疗积累的数据已经非常庞大了，而这些数据相对都是结构化的比btc优质，也不过just so so，而blockchain里的仅是纯金额记录而已，地址数量又非常庞大，噪音大。商业价值相对偏低。

Mixing Server是鸡肋，大部分人根本不在乎是否匿名。要完全断掉追踪链，最好的就是btc->fiat currency -> btc，转一次就断掉追踪链了。将来可能Zerocoin加入彻底解决匿名性不完全的问题。

1984的担心有点搞笑，现在QQ记录、银行记录、电话记录，政府全部可查，本来就已经生活在1984里了，还担心什么1984？btw，btc交易追踪IP是不靠谱的，很容易藏匿。

哈哈，生涩，楼主应该还没理解透

Bitcoin generate 2016 blocks in two weeks. You can calc block's height by time.
Usually it's a litter short than 2 weeks.

You can use bootstrap.dat when first start an bitcoind.

FYI:
https://bitcointalk.org/index.php?topic=117982.0
http://eu2.bitcoincharts.com/blockchain/

They all share some coin, P2SH is just one address(generated from multi public key) with redeemScript, Multisig has at least one address.
The coin which they shared is not belong to any one of these addresses.
To spend the coin, they all need at least one private key to sign.
Use command "#bitcoind gettxout xxxxx n" can find them before spend.

I think they the same thing, just looks different. P2SH looks more simple than multisig.

so what's the difference between p2sh and multisig?

Transaction:
https://blockchain.info/tx/60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1

Dump Tx raw, here is vout part:


In vout[0], there are two address("1AJbsFZ64EpEfS5UAjAfcUG8pH8Jn3rn1F", "1A8JiWcwvpY7tAopUkSnGuEYHmzGYfZPiq") got value 0.01000000, but which address gets the money?

could you please show me an exist Tx id like this?

why vout[N]->scriptPubKey->addresses set as an array, I saw most of them just one address in it.

In what situation vout[N]->scriptPubKey->addresses can be more than one address?

example raw Tx vout:

forgot the tx fees...

Hash?: 80cb9856e21d0e35ff529328e8bd766a9a9bd4a10cfe2a3c099d0602b6a1eeb1
Appeared in block 55812 (2010-05-14 18:49:57)
Number of inputs?: 1 (Jump to inputs)
Total BTC in?: 50
Number of outputs: 1 (Jump to outputs)
Total BTC out?: 56.71
Size?: 135 bytes
Fee?: -6.71


see tx details:
http://blockexplorer.com/tx/80cb9856e21d0e35ff529328e8bd766a9a9bd4a10cfe2a3c099d0602b6a1eeb1

can't find raw tx:
1. pblocktree->ReadTxIndex(hash, postx) read failure, tx is NOT in pblocktree.
2. view.GetCoins(hash, coins) get failure too, this tx's coin is not in CCoinsViewCache.

because this tx is in block 0, so I modify source code as below:

--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1002,7 +1002,7 @@ bool GetTransaction(const uint256 &hash, CTransaction &txOut, uint256 &hashBlock
                 if (view.GetCoins(hash, coins))
                     nHeight = coins.nHeight;
             }
-            if (nHeight > 0)
+            if (nHeight >= 0)
                 pindexSlow = FindBlockByHeight(nHeight);
         }
     }

rebuild it and run, still not work.

Write tx index code is in function CBlock::ConnectBlock:

bool CBlock::ConnectBlock(CValidationState &state, CBlockIndex* pindex, CCoinsViewCache &view, bool fJustCheck) {
...
    if (fTxIndex)
        if (!pblocktree->WriteTxIndex(vPos))
            return state.Abort(_("Failed to write transaction index"));
...
}

maybe forget to ConnectBlock 'GenesisBlock', so I try bitcoind -loadblock="~/Library/Application\ Support/Bitcoin/blocks/blk00000.dat", and it works:

$ bitcoind getrawtransaction 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b 1
{
    "hex" : "01000000010000000000000000000000000000000000000000000000000000000000000000fffff fff4d04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c 6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b7 3ffffffff0100f2052a01000000434104678afdb0fe5548271967f1a67130b7105cd6a828e03909 a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11 d5fac00000000",
    "txid" : "4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b",
    "version" : 1,
    "locktime" : 0,
    "vin" : [
        {
            "coinbase" : "04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f7 2206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73",
            "sequence" : 4294967295
        }
    ],
    "vout" : [
        {
            "value" : 50.00000000,
            "n" : 0,
            "scriptPubKey" : {
                "asm" : "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef3 8c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f OP_CHECKSIG",
                "hex" : "4104678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4ce f38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5fac",
                "reqSigs" : 1,
                "type" : "pubkey",
                "addresses" : [
                    "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa"
                ]
            }
        }
    ],
    "blockhash" : "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
    "confirmations" : 238323,
    "time" : 1231006505,
    "blocktime" : 1231006505
}


but after I restart bitcoind, it does not work anymore.

I have run bitcoind -txindex=1 -reindex=1 first, than bitcoind -txindex=1 --daemon. But still can't find this transaction:

$ bitcoind getrawtransaction 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b 1
error: {"code":-5,"message":"No information available about transaction"}

This transactino is in block 0. See: http://blockexplorer.com/tx/4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b.

Should I remove all data and start with a empty bitcoind to get all transaction?

Nope. I used cmd "bitcoind getrawtransaction" and got some txs that not belong to my wallet.

Is there any filters in bitcoind that fileter out transactions which came from SatoshiDICE's address?