BIP143
E705720
BIP143 is a Bitcoin Improvement Proposal that defines the new transaction digest algorithm used for signing Segregated Witness (SegWit) transactions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BIP143 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7899181 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BIP143 Context triple: [Segregated Witness, specifiedIn, BIP143]
-
A.
Segregated Witness
Segregated Witness is a Bitcoin protocol upgrade that separates signature data from transaction data to increase block capacity, improve scalability, and fix transaction malleability.
-
B.
Pay-to-Witness-Script-Hash (P2WSH)
Pay-to-Witness-Script-Hash (P2WSH) is a Bitcoin output type that locks funds to the hash of a witness script, enabling complex, SegWit-based spending conditions with improved efficiency and malleability resistance.
-
C.
P2PKH
P2PKH (Pay-to-PubKey-Hash) is a common Bitcoin transaction output type where funds are locked to the hash of a public key and can be spent by presenting the corresponding public key and a valid digital signature.
-
D.
Bitcoin Script
Bitcoin Script is Bitcoin’s low-level, stack-based programming language used to define the conditions under which bitcoins can be spent.
-
E.
BCP 39
BCP 39 is an IETF Best Current Practice document that provides guidelines and recommendations for the operation and management of the Internet Engineering Steering Group (IESG).
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: BIP143 Target entity description: BIP143 is a Bitcoin Improvement Proposal that defines the new transaction digest algorithm used for signing Segregated Witness (SegWit) transactions.
-
A.
Segregated Witness
Segregated Witness is a Bitcoin protocol upgrade that separates signature data from transaction data to increase block capacity, improve scalability, and fix transaction malleability.
-
B.
Pay-to-Witness-Script-Hash (P2WSH)
Pay-to-Witness-Script-Hash (P2WSH) is a Bitcoin output type that locks funds to the hash of a witness script, enabling complex, SegWit-based spending conditions with improved efficiency and malleability resistance.
-
C.
P2PKH
P2PKH (Pay-to-PubKey-Hash) is a common Bitcoin transaction output type where funds are locked to the hash of a public key and can be spent by presenting the corresponding public key and a valid digital signature.
-
D.
Bitcoin Script
Bitcoin Script is Bitcoin’s low-level, stack-based programming language used to define the conditions under which bitcoins can be spent.
-
E.
BCP 39
BCP 39 is an IETF Best Current Practice document that provides guidelines and recommendations for the operation and management of the Internet Engineering Steering Group (IESG).
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | Bitcoin Improvement Proposal ⓘ |
| activationMechanism | SegWit soft fork ⓘ |
| affects | script verification rules for SegWit inputs ⓘ |
| appliesTo |
Segregated Witness transactions
ⓘ
version 0 witness program ⓘ |
| author | Johnson Lau NERFINISHED ⓘ |
| backwardsCompatibility | non-SegWit transactions unaffected ⓘ |
| category | Consensus ⓘ |
| created | 2016-02-02 ⓘ |
| defines |
Segregated Witness (SegWit) signature hashing algorithm
NERFINISHED
ⓘ
new transaction digest algorithm ⓘ |
| designGoal |
compatibility with existing SIGHASH flags
ⓘ
deterministic and unambiguous signature digest ⓘ |
| documentType | technical specification ⓘ |
| doesNotChange | transaction serialization format for non-witness data ⓘ |
| fileName | bip-0143.mediawiki ⓘ |
| hashComponent |
hashOutputs
ⓘ
hashSequence ⓘ |
| hashComponent | hashPrevouts ⓘ |
| improves |
DoS resistance of signature verification
ⓘ
clarity of what is signed in a transaction ⓘ performance of multi-input transaction verification ⓘ |
| introduces | new digest calculation for signatures ⓘ |
| language | English ⓘ |
| motivation |
fix quadratic hashing problem in legacy signature hashing
ⓘ
improve efficiency of signature verification ⓘ make hardware wallet implementation easier and safer ⓘ |
| network | Bitcoin NERFINISHED ⓘ |
| proposalNumber | 143 ⓘ |
| relatedTo |
BIP141
NERFINISHED
ⓘ
BIP144 NERFINISHED ⓘ Segregated Witness NERFINISHED ⓘ |
| replaces | legacy SIGHASH algorithm for SegWit inputs ⓘ |
| repository | https://github.com/bitcoin/bips ⓘ |
| scope | signature hashing for SegWit inputs only ⓘ |
| securityProperty | reduces malleability for SegWit inputs ⓘ |
| signatureFlagSupport |
SIGHASH_ALL
NERFINISHED
ⓘ
SIGHASH_ANYONECANPAY ⓘ SIGHASH_NONE ⓘ SIGHASH_SINGLE ⓘ |
| standardizationScope | Bitcoin protocol consensus rules ⓘ |
| status | Final ⓘ |
| title | Transaction Signature Verification for Version 0 Witness Program ⓘ |
| usedBy |
Bitcoin Core
NERFINISHED
ⓘ
hardware wallets supporting SegWit ⓘ |
| uses | double SHA256 for transaction digest ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: BIP143 Description of subject: BIP143 is a Bitcoin Improvement Proposal that defines the new transaction digest algorithm used for signing Segregated Witness (SegWit) transactions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.