Tag: block-header

41 Nonce size - Will it always be big enough? 2011-10-28T02:28:17.663

27 Why don't the timestamps in the block chain always increase? 2011-09-12T17:20:45.950

26 The bitcoin mining algorithm from a programmer's viewpoint 2013-08-11T02:29:54.640

20 How can one embed custom data in block headers? 2011-08-30T21:22:33.277

19 How would the Bitcoin protocol be impacted if nodes only stored the blocks they cared about? 2011-09-08T01:27:17.507

14 What is a nonce? 2017-05-21T14:47:11.667

11 Mining pool performance optimization 2011-11-08T13:03:50.370

11 Why didn't Satoshi make the nonce space larger? 2014-11-18T21:37:34.173

11 Is it chain of headers rather than a chain of blocks? 2015-01-12T12:03:47.170

10 Is there a way to use the block chain as entropy in random number generator? 2011-08-30T21:50:40.397

10 How does the bitcoin network recover in case of a hash collision in the block hash? 2015-07-03T08:36:31.257

9 Whats the process of Creating a Block on the BlockChain 2013-01-28T04:41:21.483

9 Calculate hash of block header 2018-01-07T13:53:07.363

8 Why is the Block Header txn_count field always zero? 2011-12-01T00:16:58.927

8 Why are block header bits necessary? (Valid difficulty is already implied by chain history) 2018-12-02T20:12:40.877

7 How is it that concurrent miners do not subvert each other's work? 2015-01-21T17:47:39.917

6 Could Hadoop be used as a mining pool architecture? 2013-07-27T13:05:49.387

6 Full example data for scrypt Stratum-client 2014-03-02T19:00:24.347

6 How to create a SPV client? 2014-03-30T18:06:58.880

6 Can a full node provide a bogus block bloomfilter to a Neutrino node? 2019-01-18T21:31:51.473

5 Version field in transactions, blocks, etc 2011-12-02T08:04:27.827

5 Why the timestamp component of the block header? 2013-08-27T12:10:32.467

5 At which point do blocks get validated in the mining process? 2016-06-01T16:56:17.570

5 How does Segwit prevent ASICBOOST? 2017-07-11T11:11:15.430

4 How hard is it to alter a block after it was found? 2014-10-30T01:42:38.423

4 Bitcoin mining: block structure 2016-06-18T18:05:03.753

4 bitcoin protocol: transaction encoding 2016-06-23T23:12:40.683

4 Mining Block header bit reversing 2017-09-16T10:40:19.023

4 Unusual Version Number in Blocks 2018-09-16T03:37:49.873

4 Which block header fields are miners able to change in an effort to avoid having to recalculate the Merkle Root? 2019-09-15T21:39:20.967

3 What was the intended benefit of truncating the Target? 2013-03-01T03:48:17.453

3 Is there any relation between the block version field and the one of the transaction? 2014-03-17T14:50:32.137

3 Given a block, is there a list of all hashes for all possible 2^32 nonce values? 2015-01-21T17:21:15.893

3 Why is the block header 80 bytes, not 128 bytes (= two SHA-256 blocks)? 2015-06-14T00:46:32.617

3 Why does bitcoin-cli return strange version numbers for blocks? 2016-06-15T14:35:17.237

3 How is mining difficulty defined (formula)? 2017-11-04T10:50:30.753

3 What is the difference between Root Hash and Block Hash? 2018-02-06T19:37:57.633

3 Are there any blockchain explorers that provide raw Tx data and block headers? 2018-02-15T00:30:41.430

3 Block 620826 is 1 second before block 620825? 2020-03-08T18:01:15.193

3 What is the proper way to handle reorgs when fetching headers 2020-08-04T22:33:27.660

2 Nonce in Merged Mining 2015-03-23T14:46:24.157

2 How does "headers first" affect BLKxxxx.dat structure? 2015-03-27T05:25:46.560

2 Why is the target stored in compact form in the block header? 2015-04-03T10:17:05.127

2 How often do miners recalculate the merkle root they're working on? 2015-11-27T20:19:51.983

2 Do the leading zeros in the desired hash pattern for mining change? 2016-02-01T12:54:38.463

2 getting bitcoin address of blk*.dat files 2016-05-27T07:53:02.130

2 How is the mempool incorporated in the calculation of the block hash? 2016-08-07T18:14:05.943

2 SPV clients - how much does occupy the full blockchain headers? 2017-02-25T13:47:10.947

2 To create a blockchain using MySQL database 2017-08-23T08:30:39.527

2 Help in understanding block header input data for scrypt 2017-11-16T08:41:27.557

2 Why there is no block index or block height included in the block header? 2018-04-30T09:49:19.210

2 Is my understanding of Blockhain Endianness correct? 2018-05-10T20:36:25.030

1 Mining software and pool tricks 2011-12-19T18:47:13.693

1 Purpose of unique header in block hashing algorithm 2013-08-28T22:39:23.333

1 Why do we need a mining speed above 4.3Ghash/s? 2013-10-21T21:07:24.260

1 Litecoin getwork specification, endianness 2014-01-02T18:00:04.857

1 How is the difficulty of bitcoin mining propagated? 2014-03-12T10:03:58.027

1 Are there multiple representations of the same target value? Are they interchangable? 2015-04-10T19:43:36.993

1 Block Broadcasting - Unsolicited Block Push 2015-06-05T15:27:17.690

1 Why do transactions get verified before it is clear that the block header is valid? 2015-11-07T14:52:31.247

1 Previous block hash on first Bitcoin block? 2016-02-29T13:43:36.633

1 Reason behind hashing the nonce in prevBlockHash? 2016-07-26T18:55:09.917

1 Creating a P2P network like Block Chain 2017-04-25T12:54:49.017

1 Does the 1 MB block size limit include the header? 2017-06-09T21:33:51.680

1 Is the hash of the previous block included in the block header? 2017-07-11T22:50:49.310

1 how to convert blockchain to new version? 2017-07-28T03:52:10.487

1 Hash that defines previous block in Blockchain vs mathematical solution 2017-09-15T13:35:11.633

1 merkle root 2 codes 2017-09-20T18:50:11.213

1 Merkle Root for 1-transaction block! 2017-10-19T03:28:56.890

1 Do you know any download site for full blockchain header data (6) in CSV ASCII format? 2017-12-29T02:27:56.043

1 Why do block explorer APIs say the nonce in the block header is 0? 2017-12-29T03:35:24.290

1 What should be less than the target? 2018-04-17T21:18:04.067

1 Merkle root Vs transaction hashes 2018-05-15T08:59:55.583

1 Significance of the "hash" field reported by the 'bitcoin-cli getblock' command 2018-07-29T04:26:03.303

1 How to get block header hex? 2019-11-24T12:37:45.383

1 Get transaction data from full node 2019-12-14T16:57:29.523

1 A Bitcoin soft fork idea to help compress the blockchain 2020-05-11T12:58:57.810

1 How to build coinbase transaction from bitcoin core? 2020-06-12T16:45:52.340

1 What is the optimal way to increment extranonce? 2020-06-17T10:43:46.130

1 Merkle root with one transaction 2020-07-24T12:49:14.550

1 Does the Merkle Root get constantly updated inside the block or does it only get added once the block is completed? 2021-02-02T19:43:01.420

0 Bitcoin block hashing algorithm. nonce 2013-11-17T07:52:00.307

0 How Is Block Assembled? 2014-05-12T14:42:31.297

0 Amount of block locator hashes in "getblocks" message 2015-06-02T18:23:22.210

0 Bitcoin-qt taking forever to acquire the blockchain 2016-08-05T02:03:12.403

0 How a Light Node can get a block? 2017-04-05T14:18:56.967

0 How can miners alter timestamps to prevent or delay BIP09 feature activation? 2017-07-05T14:39:03.983

0 How to generate a block header? 2017-08-04T15:59:48.097

0 How generate a hex string for a block 2017-08-27T12:41:02.940

0 Bitcoin Blockchain Parser to get all block headers 2018-01-08T04:54:25.880

0 When computing the hash, do you need anything after the number of difficulty bits? 2018-03-12T23:20:58.020

0 What is the most optimal way to parse a raw bitcoin block with python? 2019-02-07T16:02:06.947

0 bitcoin's PoW, real time of creating one block 2019-02-14T06:09:45.437

0 How to dissect or decode a BTC transaction? 2019-04-22T13:15:16.893

0 Calculate BitcoinGold Block Header Hash 2020-05-04T15:21:21.593

0 Padding the blockheader in sha256 2020-06-16T17:53:22.053

0 Can I get all block header data like the SPV node? 2020-06-19T10:39:20.750

0 Is a timestamp in bitcoin different than just the "stamp of time"? 2020-10-04T23:14:03.073

0 What is the difference between the two transaction headers on the Bitcoin Liquid sidechain network? 2021-01-20T10:31:04.970