ANTANA BITCOIN STATISTIC COIN #142 “TRANSACTION MALLEABILITY” BATCH
While transactions are signed, the signature does not currently cover all the data in a transaction that is hashed to create the transaction hash. Thus while uncommon it is possible for a node on the network to change a transaction you send in such a way that the hash is invalidated. Note that this just changes the hash, the output of the transaction remains the same and the bitcoins will go to their intended recipient. However this does mean that, for instance, it is not safe to accept a chain of unconfirmed transactions under any circumstance because the later transactions will depend on the hashes of the previous transactions, and those hashes can be changed until they are confirmed in a block. (and potentially even after a confirmation if the block chain is reorganized) In addition clients must always actively scan for transactions to them; assuming a txout exists because the client created it previously is unsafe.
|Made from:||[Zinc]+[24K .999 Pure Gold plated]|
|Dimensions:||[40x3mm] / [1''57 x 0"12]|
|Weight:||[28g] / [1oz]|
|Quantity:||only 300 coins|
Note: presented photos was made with different reflection. All Coins are Gold Plated.