Search Results

Since the introduction of BIP130 ("sendheaders"), a node can request that new block announcements are sent through a HEADERS message rather than through an INV. This avoids a roundtrip, in case the re …

The purpose of IBLT-based block transfer mechanism is reducing bandwidth (how much data is sent in total) and latency (how long it takes to transfer the block), and depending on which has the priority …

Blockchain.info lists the first IP address it sees a new transaction from. If you aren't the one creating the transaction, and aren't accidentally the node right in between the node that does and blo …

Blocks can contain two interdependent transactions (one transaction spending an output created by another transaction in the same block). Bitcoin Core will accept to its mempool transactions which spe …

You can reconstruct the elements whenever you have 2c consecutive power sums for k=a until k=a+2c-1 (power sum Sk is x1k + x2k + ... xnk) of the elements, regardless of which a you start at. However, …

Bitcoin is a so-called gossip network. They announce any new object to all of their peers (just the hash of the data). If the peer doesn't know the object yet, it asks for the full object. So it's cer …

There are probably several reasons, but it's mostly historic. There is no inherent problem with just sending transaction id's. There is a disadvantage too, though, namely increased latency, which is n …

The waste ratio you are talking about is different from the one mentioned there. What you are talking about is the difficulty: if the network's total hash rate is X hashes/second, then the difficulty …

Stale and orphan blocks are confusing terms with many meanings, depending on whom you ask. If by stale blocks you mean "blocks that are on branches off the main chain, but are otherwise valid", yes, …

From the relevant section in BIP 68: When the relative lock-time is block-based, it is interpreted as a minimum block-height constraint over the input's age. A relative block-based lock-time of zero …

BIP 62 proposed to make transaction malleability impossible. No it didn't. It would have outlawed a limited number of known and addressable forms of malleability. In particular, it did not preve …

This overlap is exploited in many of the proposed efficient relay protocols, including the Relay Network, IBLT, Block network coding (and Compact Blocks which you reference). …

Is Fibre protocol deserved for rare temporary forking? If blocks are propagate that fast, there are less chances for temporary fork to happen and even if it do, they are short (small length)? Miner c …

It is very hard to get exact statistics on this, for the simple reason that nodes in the network do not relay blocks which aren't considered part of the main chain. …