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Votes Activity Newest Views Added
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
1
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