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Questions tagged [genesis-block]

Refers to the very first block of a new blockchain based cryptocurrency.

34
votes
4answers
11k views

Why can’t the genesis block coinbase be spent?

According to the bitcoin wiki: The first 50BTC block reward went to address 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa, though this reward can't be spent due to a quirk in the way that the genesis block is ...
29
votes
2answers
7k views

What is TxIn's sequence?

I'm currently trying to generate the genesis block with my code and I've stumbled upon the TxIn sequence field that is not explained in the Protocol Specification wiki page, nor does it seem to appear ...
2
votes
3answers
13k views

How can I create a new Genesis Block?

I'm trying to create a testcoin using litecoin. To create genesis block I changed some lines to : block.nTime = 1390948469; // current time uint256 hashGenesisBlock("0x"); //I dont now it's true or ...
30
votes
1answer
9k views

What are colored coins?

What exactly are colored coins? I've tried understanding, but I don't quite get it yet . . . Do any examples exist?
14
votes
2answers
5k views

How do you make a Genesis block?

What is involved in creating a genesis block? What makes it different from the other blocks in the chain.
10
votes
2answers
4k views

How did the first 50 Bitcoins come into being?

How was the Bitcoin system initialized? Can one start the system with only a single node (computer)? Please explain it in plain English. Thanks, guys.
-1
votes
1answer
1k views

Cannot mine Genesis / First Block (PIVX Fork / Clone)

Whatever I do, I am unable to mine the 1st block after the genesis block. All the while, I have assumed that I have mined the Genesis block, and I am unable to mine the 1st block using "setgenerate ...
1
vote
1answer
893 views

New altcoin. Cpuminer gives me “booo”

I made a new altcoin based on "INSaNe" https://github.com/CryptoCoderz/INSN I changed genesis hashes using this code: if (true && (genesis.GetHash() != hashGenesisBlock)) { ...
3
votes
1answer
1k views

given a json of a block, how do I calculate its hash?

Here is the genesis block with its hash. How the hash was calculated? { "hash":"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f", "ver":1, "prev_block":"...
2
votes
1answer
1k views

Altcoin (Litecoin fork) creation. No synchronisation

i m trying to create an altcoin from the current Litecoin master branch on github. Its Litecoin in the version of 0.15.1. By editing some parameter in chainparams.cpp i m able to create my genesis ...
4
votes
1answer
824 views

Is it true the genesis block reward can't be spent forever? [duplicate]

Is the genesis block reward forever unspendable?
1
vote
2answers
4k views

altcoin debug.log shows ERROR: CTxDB::LoadBlockIndex() : Failed stake modifier checkpoint height=0

What I have done so far: Generated new Genesis Block Generated new MerkleRoot Updated MerkleRoot Updated Genesis block values Commented out these lines Compiled on CentOS 6 Created altcoin....
5
votes
2answers
4k views

What is the genesis block?

What is the genesis block? In which ways is it important or different from other blocks?
3
votes
2answers
955 views

How to make genesis block transaction spendable?

I read this question Why can’t the genesis block coinbase be spent? . It says because of some quirk (the genesis block coinbase transaction is not added to the global transaction database) genesis ...
2
votes
1answer
1k views

Why I cannot get transaction from genesis block [duplicate]

When I run command getrawtransaction 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b in my bitcoin-qt console (or bitcoind), I get No information available about transaction (...
1
vote
1answer
1k views

How do I create a new genesis block for an altcoin?

I'm trying to clone the Blackcoin sourcecode just for the hell of it but I can't seem to generate a genesis block. I can do it on normal coins, but not here. The Blackcoin developers seem to have ...
1
vote
1answer
538 views

Altcoin Genesis block fails after changing block reward

I have been struggling with this issue for a week. I have created an altcoin forking litecoin code, i have mined genesis block, the compiled code works fine with 50*COIN genesis block reward. When i ...
1
vote
3answers
1k views

do you need to independently create a genesis block for a new altcoin?

So if one was to try to create an altcoin that was a fork of the bitcoin code would he/she have to create a genesis block independently first? static CBlock CreateGenesisBlock(uint32_t nTime, ...
0
votes
3answers
2k views

Extract genesis block raw TX data

RPC does not return the raw transaction for the genesis block. I need to get this data for other coins to be able to add them to ABE. https://github.com/bitcoin-abe/bitcoin-abe/blob/master/Abe/...