138 What are bitcoin miners really solving? 2013-02-28T17:53:44.590

97 Is there a way to set up proof-of-work systems so they would be even more useful? 2011-09-01T04:10:16.373

41 How are transaction hashes calculated? 2012-02-06T06:13:29.547

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

32 Why are hashes in the bitcoin protocol typically computed twice (double computed)? 2013-01-07T03:54:49.427

27 How can I generate a vanity Bitcoin address? 2012-03-10T06:59:32.377

27 Why are Bitcoin addresses hashes of public keys? 2012-05-08T15:06:51.780

27 Why does Bitcoin use two hash functions (SHA-256 and RIPEMD-160) to create an address? 2013-04-05T18:00:06.710

22 How do I implement a Merkle Tree? 2011-09-16T18:52:27.300

20 What does it mean for a cryptocurrency to be ASIC-resistant? 2014-08-10T15:58:32.167

19 What does the mining difficulty number really mean? 2014-03-05T16:41:19.813

18 Relationship between Hash-Rate and Difficulty 2012-11-30T18:35:56.870

17 How do you perform double-SHA-256 encoding? 2012-12-08T22:53:51.103

16 Is Bitcoin future-proof? 2011-08-30T22:16:20.563

14 How many Integer Operations on a GPU are necessary for one Hash? 2011-09-28T20:03:59.093

13 What is "Script Hash" address exactly and how does it work? 2013-04-13T04:54:00.793

12 What will happen when SHA 256 needs to be replaced? 2011-10-06T12:01:24.870

12 Two blocks, two transactions, same hash 2012-02-28T10:44:47.570

12 Why are Bitcoin calculation "useless"? 2012-12-06T05:51:45.427

12 Can the Bitcoin network be used for cracking? 2013-04-07T21:51:24.477

12 Is it possible for the network to stop finding valid blocks? 2013-04-18T06:56:53.250

12 How is the network hash rate calculated? 2013-05-23T08:37:20.477

12 How can we be sure that a new block will be found? 2014-03-03T15:16:09.293

11 Exactly how does one calculate how many BTC they will get a certain hashrate? 2011-09-03T06:55:49.177

11 how can I insert an arbitrary sha256 hash into the blockchain? 2012-07-30T17:24:04.747

11 Where is Double hashing performed in Bitcoin? 2013-03-17T16:42:28.380

11 How does the CPU hashing algorithm used in Yacoin differ from scrypt? 2013-06-05T12:37:21.053

11 Work distribution in a mining pool 2015-05-07T06:43:41.990

10 How can I measure the total hashing power of the Bitcoin network? 2011-10-27T18:57:38.627

9 Relation between Network Hash-Rate & bitcoin value? 2012-03-15T12:04:28.447

9 Can more than 1 block be solved per 10 mins on average (LONG TERM)? 2012-07-29T01:34:51.360

9 Why does Bitcoin use two rounds of SHA256? 2012-07-30T20:44:18.460

9 When a transaction is broadcast to the network, what is actually being sent? 2013-04-16T20:54:28.970

9 What complexity class is Bitcoin's proof-of-work (hashcash) in? 2013-10-16T01:44:19.440

9 What is a good analogy (which a layperson would understand) for the process of Bitcoin mining? 2013-12-07T22:22:04.110

9 ECDSA Signature and the "z" value 2014-06-07T05:41:52.527

9 Where did the idea of blockchain come from? Git was already using it since 2005 2016-04-05T10:25:31.597

9 hash versus hash pointer 2016-05-20T17:10:49.420

8 How to calculate a hash of a Tx? 2011-12-07T22:22:26.080

8 If SHA256 were compromised tomorrow, would Bitcoin collapse, or is there some contingency plan to move the network to a new hashing algorithm? 2013-11-03T08:40:45.963

7 Can an SHA256 hash be used as an ECDSA private key? 2012-05-09T15:09:56.730

7 How does a miner perform hashing? 2012-10-19T21:24:36.513

7 How is it possible that transactions can be added to a block currently being mined? 2012-12-11T13:29:53.707

7 Possible to create a double spend attack by replacing a Tx in the merkle tree? 2013-03-19T17:02:28.747

7 Are Bitcoin ASICs good for anything else other than mining? 2013-04-30T11:46:24.073

7 How to 'attach' metadata to a bitcoin receive address 2013-08-21T10:10:12.240

7 Is Quark as secure as SHA 256? 2015-05-26T01:43:08.490

7 What would happen if two blocks had the same hash? 2017-09-17T17:51:55.110

6 Explainations about chaining of transactions 2013-04-26T12:25:41.353

6 How do pool operators do their hashing? 2013-04-28T19:45:39.283

6 Does every nonce really have an equal chance of winning? 2015-03-11T20:53:08.963

6 What is the approach to calculate an Ethereum address from a 256 bit private key? 2015-12-29T04:41:28.757

6 How is a block header hash compared to the target (bits)? 2016-06-01T19:36:08.517

5 In Getwork, how does one calculate the value of Hash1? 2012-02-11T01:59:49.223

5 Where can I see an input that will hash to a solution? 2012-06-13T19:50:50.630

5 Why do transaction/blockchain based gambling sites use such complicated methods for proving fairness? 2013-03-24T11:39:55.870

5 bitcoins can use different algorithm, how and implications 2013-05-01T23:13:02.327

5 How many hashes create one Bitcoin? 2013-07-06T09:27:36.257

5 Why was the RIPEMD-160 hash algorithms chosen before SHA-1? 2013-11-11T01:37:17.903

5 How do signatures work? 2013-12-05T21:56:59.800

5 Are Bitcoin ASICs Optimized for Fixed Length Messages? 2015-01-09T17:53:15.823

5 Visualize Bitcoin Hashing 2015-05-08T15:25:40.323

5 ScriptSig content during signature (quadratic hashing) 2017-06-15T13:21:54.747

5 Why do two miners get different hashes for the same list of transactions? 2017-08-12T23:37:45.450

5 How do I generate the Bitcoin Cash hash preimage? 2018-02-22T20:57:54.743

5 What is preventing me from simply constructing a hash that's lower than the current target? 2019-04-11T19:53:05.277

4 What other purposes can I use my [obsolete] hashing hardware for? 2012-09-19T05:15:14.477

4 What would happen if two public keys had the same Base58 hash? 2012-12-12T12:59:17.523

4 bitcoind getmininginfo says hashespersec is 0 2012-12-18T21:57:08.307

4 Future-proofing a deflationary currency from future counterfeiting 2013-02-28T05:11:25.373

4 What determines SHA256 performance on different types of hardware? 2013-04-15T20:17:23.553

4 A full/multi nonce range search or just a partial range search? 2013-04-17T00:35:18.800

4 What is the hash-rate of the Bitcoin network that results in the maximum difficulty? 2013-05-21T14:55:35.053

4 How does a share help in the discovery of a new block? 2013-05-27T07:40:07.190

4 What is a megahash and how is it used to estimate the rate at which bitcoins are mined? 2013-06-04T21:57:39.813

4 Is the idea of a "honey hole" such as in gold mining, present in bitcoin mining? 2013-12-03T05:20:40.393

4 What is the relationship between hash rate and accepted shares? 2014-01-08T21:13:36.567

4 What is the variable in a block that holds hash of found PoW? 2014-04-13T20:59:34.717

4 What is a midstate? How does using a midstate speed up hashing? 2015-03-23T07:14:53.333

4 bitcoin two identical R 2015-05-27T04:57:11.493

4 Blockchain SHA256 hash and nonce 2017-03-01T17:22:49.487

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

4 Why the leading zeros in the desired hash pattern? 2017-11-06T17:45:20.110

4 Which is the smallest hash that has ever been hashed? 2017-12-16T19:52:58.207

3 How does the rate of getwork requests correlate with the hashrate of a miner? 2012-04-15T11:53:36.883

3 Is there a guaranteed hash for every block? 2012-05-04T22:01:15.677

3 Given the probability of finding a block, and time taken, can I infer hashrate? 2013-02-28T16:58:03.677

3 given a json of a block, how do I calculate its hash? 2013-04-13T23:53:52.710

3 Could the target become unreachable? 2013-04-24T07:46:19.507

3 Hashrate falls by factor of 1000x when now block is found? 2013-04-25T09:14:22.153

3 What is wrong with using hmac_sha512(block_hash, trans_id) as the resulting hash for a provably fair game? 2013-10-23T02:31:11.987

3 What values are hashed in the SHA-256 algorithm, and what would be the next iteration until a possible header is found? 2013-11-12T20:45:06.583

3 Shares accepted vs hash rates? 2013-11-29T04:30:04.547

3 How large can the bitcoin salt value be? 2014-01-08T20:32:32.920

3 Are Bitcoin Block Hashes Predictable 2014-04-18T18:07:24.470

3 SHA256 * 2 on header - what am I doing wrong? 2014-05-14T02:10:59.830

3 Namecoin - How to Find Block Height via Block Hash? 2014-05-27T23:26:39.647

3 Duplicated hash values in mining reward 2014-06-11T09:54:07.850

3 Proof of work - does the equipment matter? 2014-06-14T17:52:56.683