User inersha

62

votes

3

answers

35k

views

How is difficulty calculated?

difficulty

Jan 27 '19 at 14:19 giancarloGiuffra 31

58

votes

2

answers

37k

views

What does the curve used in Bitcoin, secp256k1, look like?

cryptography secp256k1

Jun 29 '18 at 20:46 Badr Bellaj 971

47

votes

2

answers

10k

views

What is the longest blockchain fork that has been orphaned to date?

blockchain-fork history stale-block

Feb 8 '16 at 15:29 Community♦ 1

44

votes

2

answers

6k

views

What is the coin selection algorithm?

transactions wallet client fragmentation coin-selection

Sep 9 '19 at 3:11 yahiheb 94

41

votes

3

answers

11k

views

How does the bitcoin client make the initial connection to the bitcoin network?

peer-discovery

Mar 22 '15 at 1:47 Nick ODell 27.4k

36

votes

3

answers

13k

views

What are the keys used in the blockchain levelDB (ie what are the key:value pairs)?

blockchain leveldb node.js

May 13 at 16:00 Community♦ 1

30

votes

2

answers

11k

views

Why does Bitcoin use two hash functions (SHA-256 and RIPEMD-160) to create an address?

address hash

Apr 5 '13 at 21:03 Community♦ 1

30

votes

2

answers

9k

views

What is TxIn's sequence?

transactions protocol raw-data genesis-block sequence

Jul 1 '17 at 13:41 Karel Bílek 2,365

30

votes

1

answer

11k

views

What is the database for?

blockchain database

Mar 14 '19 at 16:37 LuisF 103

26

votes

5

answers

7k

views

What are the limits of m and n in m-of-n multisig addresses?

multi-signature

Apr 23 '18 at 19:03 Rodrigue Afota 1

25

votes

2

answers

7k

views

What is the block maturation time?

blockchain protocol coinbase-transaction

Nov 21 '17 at 23:17 Elias Zamaria 153

22

votes

2

answers

2k

views

History behind the scripting language in Bitcoin?

script history

Dec 13 '14 at 0:15 Rich Apodaca 2,066

22

votes

1

answer

5k

views

How do “Pay to Script Hash” transactions work?

script p2sh

Dec 13 '14 at 6:03 Nick ODell 27.4k

20

votes

6

answers

5k

views

Merkle Root and Merkle Proofs

bitcoin-core merkle-tree

Aug 26 at 10:16 NIKHIL KOMMINENI 83

19

votes

4

answers

6k

views

Why does the Bitcoin protocol use the little-endian notation?

protocol bitcoin-core standard theory

Oct 27 '15 at 11:24 Community♦ 1

19

votes

1

answer

12k

views

Why the signature is always 65 (1+32+32) bytes long?

bitcoin-core signature ecdsa message-signing

Aug 7 '13 at 0:37 Pieter Wuille 63k

18

votes

2

answers

8k

views

What is the format of the coinbase transaction?

mining-pools coinbase-transaction

Dec 8 '19 at 22:26 Arash Spears 1

16

votes

2

answers

7k

views

Can two private keys generate the same (public) Bitcoin address?

client address address-generation

Dec 25 '17 at 13:19 Community♦ 1

15

votes

3

answers

6k

views

How to sign a transaction with multiple inputs?

transactions signature raw-transaction

Jun 10 '19 at 13:36 Dimitar Vasilev 1

15

votes

1

answer

2k

views

Why use DER encoding for signatures?

signature ecdsa

Nov 7 '13 at 16:04 Pieter Wuille 63k

12

votes

1

answer

6k

views

Replace-by-Fee vs Child-pays-for-Parent?

unconfirmed-transactions terminology replace-by-fee child-pays-for-parent

Jun 20 '17 at 19:49 user52005 1

12

votes

2

answers

6k

views

What is a thin client?

thin-clients

Dec 19 at 14:54 Glorfindel 422

11

votes

1

answer

2k

views

What are the advantages of Schnorr vs ECDSA?

multi-signature transaction-verification ecdsa message-signing schnorr-signatures

Oct 19 at 13:59 Murch♦ 49.5k

9

votes

1

answer

721

views

How much out of order are the blocks stored in the blk*.dat files?

blockchain raw-data

Jan 9 '17 at 18:05 Nick ODell 27.4k

8

votes

2

answers

4k

views

What is chainwork?

bitcoind json-rpc block best-chain chainwork

May 4 '18 at 17:24 Murch♦ 49.5k

8

votes

1

answer

291

views

Why is target stored in the block at all?

difficulty

Apr 23 '16 at 7:50 Pieter Wuille 63k

8

votes

1

answer

2k

views

What does a segregated witness transaction look like?

raw-transaction segregated-witness

May 17 '18 at 17:34 Jules Lamur 137

7

votes

2

answers

6k

views

Do unconfirmed transactions expire after some time?

unconfirmed-transactions mempool child-pays-for-parent replace-by-fee

Mar 3 '16 at 10:58 Murch♦ 49.5k

6

votes

2

answers

4k

views

Why was the RIPEMD-160 hash algorithms chosen before SHA-1?

hash sha256 ripemd160

Nov 11 '13 at 23:31 Community♦ 1

6

votes

1

answer

1k

views

Replacing ECDSA (SECP256k1) with Schnorr signatures

address signature address-generation ecdsa schnorr-signatures

Nov 29 '17 at 23:55 MeshCollider♦ 9,265

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How is difficulty calculated?

What does the curve used in Bitcoin, secp256k1, look like?

What is the longest blockchain fork that has been orphaned to date?

What is the coin selection algorithm?

How does the bitcoin client make the initial connection to the bitcoin network?

What are the keys used in the blockchain levelDB (ie what are the key:value pairs)?

Why does Bitcoin use two hash functions (SHA-256 and RIPEMD-160) to create an address?

What is TxIn's sequence?

What is the database for?

What are the limits of m and n in m-of-n multisig addresses?

What is the block maturation time?

History behind the scripting language in Bitcoin?

How do “Pay to Script Hash” transactions work?

Merkle Root and Merkle Proofs

Why does the Bitcoin protocol use the little-endian notation?

Why the signature is always 65 (1+32+32) bytes long?

What is the format of the coinbase transaction?

Can two private keys generate the same (public) Bitcoin address?

How to sign a transaction with multiple inputs?

Why use DER encoding for signatures?

Replace-by-Fee vs Child-pays-for-Parent?

What is a thin client?

What are the advantages of Schnorr vs ECDSA?

How much out of order are the blocks stored in the blk*.dat files?

What is chainwork?

Why is target stored in the block at all?

What does a segregated witness transaction look like?

Do unconfirmed transactions expire after some time?

Why was the RIPEMD-160 hash algorithms chosen before SHA-1?

Replacing ECDSA (SECP256k1) with Schnorr signatures