Header

Composite 375 v393

sp_runtime::generic::header::Header

About This Type

Structured type: Header.

A struct-like type where each field is encoded in declaration order.

Encoding: Fields encoded consecutively in declaration order, no field names or separators.

Fields (5)

#	Name	Type
0	parent_hash	H256
1	number	Compact<u32>
2	state_root	H256
3	extrinsics_root	H256
4	digest	Digest

SCALE Encoding

Rule: 5 fields encoded consecutively in declaration order. No field names or delimiters.
Size: sum of field sizes

Examples

Struct with 5 fields = parent_hash: H256, number: Compact<u32>, state_root: H256, extrinsics_root: H256, digest: Digest

0x<field0><field1><field2><field3><field4>

field 0 parent_hash: H256

field 1 number: Compact<u32>

field 2 state_root: H256

field 3 extrinsics_root: H256

field 4 digest: Digest

Code Examples

import { TypeRegistry } from "@polkadot/types";

const registry = new TypeRegistry();

// Encode Header
const value = registry.createType("Header", {
  parent_hash: 0,
  number: 0,
  state_root: 0,
  extrinsics_root: 0,
  digest: 0
});
console.log("Hex:", value.toHex());

Type Parameters

Number = u32

Hash

Referenced By (5)

#374 Block via header #519 Block via header #523 Vec<Header> #719 EquivocationProof via first_header #719 EquivocationProof via second_header

Type Information

Type ID: 375
Kind: Composite
Path: sp_runtime::generic::header::Header
Runtime: v393

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