Encyclopedia

This Archive aims to provide the glossary terms and docs you need to understand Bitcoin and start building Bitcoin-based applications.

S

Satoshis

Denominations of Bitcoin value, usually measured in fractions of a bitcoin but sometimes measured in...

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ScriptPubKey

A script included in outputs which sets the conditions that must be fulfilled for those...

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ScriptSig

Data generated by a spender which is almost always used as variables to satisfy a...

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Sequence number

Part of all transactions. A number intended to allow unconfirmed time-locked transactions to be updated...

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Serialized block

A complete block in its binary format—the same format used to calculate total block byte...

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Serialized transaction

Complete transactions in their binary format; often represented using hexadecimal. Sometimes called raw format...

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Sighash

A flag to Bitcoin signatures that indicates what parts of the transaction the signature signs....

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SIGHASH_ALL

Default signature hash type which signs the entire transaction except any signature scripts, preventing modification...

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SIGHASH_ANYONECANPAY

A signature hash type which signs only the current input.Not to be confused with: SIGHASH_SINGLE...

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SIGHASH_NONE

Signature hash type which only signs the inputs, allowing anyone to change the outputs however...

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SIGHASH_SINGLE

Signature hash type that signs the output corresponding to this input (the one with the...

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Signature

A value related to a public key which could only have reasonably been created by...

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Signature hash

A flag to Bitcoin signatures that indicates what parts of the transaction the signature signs....

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Signature script

Data generated by a spender which is almost always used as variables to satisfy a...

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Simplified Payment Verification

A method for verifying if particular transactions are included in a block without downloading the...

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Soft fork

A softfork is a change to the bitcoin protocol wherein only previously valid blocks/transactions are...

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SPV

A method for verifying if particular transactions are included in a block without downloading the...

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SSL signature

Signatures created and recognized by major SSL implementations such as OpenSSL.

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Stale block

Blocks which were successfully mined but which aren’t included on the current best block chain,...

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Standard Transaction

A transaction that passes Bitcoin Core’s IsStandard() and IsStandardTx() tests. Only standard transactions are mined...

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Stanndard block relay

The regular block relay method: announcing a block with an inv message and waiting for...

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Start string

Four defined bytes which start every message in the Bitcoin P2P protocol to allow seeking...

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Documentation