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Questions tagged [height]

The height of a block is the the number of blocks between it and the genesis block.

The height of a block is the number of blocks in the chain between it and the genesis block of a block chain based cryptocurrency. (The genesis block has height 0.)

The height of the block chain is usually taken to be the height of the highest block, in the chain with greatest total difficulty; i.e. the length of the chain minus one.

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Definition of blockchain height

What is the definition of blockchain height and how is it found/calculated. I get the idea it is related to the SO answer by Gary Rowe, but the word "height" is not mentioned. Yet I see references to "blockchain height" in many places.
zaph
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How many blocks are there in blockchain as of today?

I have currently downloaded 300,000 blocks and the last one is generated 1 year and 19 weeks ago. I wonder how many blocks are more to go, before I am up to date.
user30244
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Is there a special name for the block currently at the head of the chain?

Just as we have the genesis block which is block 0, is there a special name for the block currently at the head of the chain? Obviously such a block would be observer dependent and never absolute but I am curious all the same.
Matthew Roberts
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At what block height may locktimed transactions get included?

Transactions with outputs whose sequence is smaller than UINT_MAX are interpreted as locked until the timestamp or block height specified in nLockTime is reached. Specifically regarding the block height, I read imprecise or disagreeing information…
Murch
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How can I forecast the date Bitcoin will hit a certain blockheight?

How can I forecast the date Bitcoin will hit a certain blockheight? Are estimates for future halving and other important blockheights just based on the current height plus 1 for each 10 minute period between not and that date/time? Are there any…
Nancy Smith
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How to determine custom synchronization status?

Context: I'm working on an application in which we'd like to know if the current node is sufficiently synced to be able to handle RPC requests. The method we would like to use is to see if our node has at least 2-4 peers and if a majority of the…
morsecoder
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Is there a well defined last block?

It's fairly well known when the last bitcoin will be mined, but is there a well defined last block? By that I mean, is there a block height H after which Bitcoin Core nodes will refuse to accept any further blocks due to technical limitations either…
Tyler Levine
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Namecoin - How to Find Block Height via Block Hash?

Is it possible to use namecoind to determine the block number from a block hash? Going from height to hash is easy: namecoind getblockhash But going from hash to height appears to be impossible... Height is not an attribute on each block and no…
CoinHeavy
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Is block height always sequential?

Is block height always sequential? Can it serve as a 100% reliable block counter in case if I want to check whether I missed a block or I need to account for any corner cases?
Alexey Kalmykov
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How do I get testnet block height?

Like I would do wget -O - http://blockchain.info/q/getblockcount 2>/dev/null for the main net.
o0'.
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How to create block height to UNIX time converter?

I want to create a converter that can be given a block height, human readable time, or UNIX time and then provide the correlated information for it. For example, if given a block height, the converter will give you an estimated time (UNIX and…
LeanMan
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Why there is no block index or block height included in the block header?

Why block index or block height is not included in the block header? Do we have to go through the whole chain if we want to know how many blocks are there in a chain? On the other hand, if some blocks have the same hash, how to find them and get…
Bill
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How can one extract an address balance at a specific height?

Is it possible to view the balance of an address at a specific height, without using any external web api? Could it perhaps be done using bx or the Bitcoin client API?
Jonas Lejon
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How can I determine the block height on a certain day?

Is there an easy calculator to determine the block height on a certain day? i.e what was the block height on 14th October? This was asked by JoeNakamoto on Twitter. There is a related question on converting block height to UNIX time here.
Michael Folkson
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Bitcoin in RegTest throw (bad-cb-height) at block No. 500

Mining in RegTest mode goes well until it's reach block height=500, then server return (bad-cb-height) any idea what is wrong with this…
Ali Harsini
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