Constructor
new ChainEntry(optionsnullable)
Create a chain entry.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
options |
Object |
<nullable> |
Properties:
| Name | Type | Description |
|---|---|---|
hash |
Hash | |
version |
Number | |
prevBlock |
Hash | |
merkleRoot |
Hash | |
witnessRoot |
Hash | |
treeRoot |
Hash | |
reservedRoot |
Hash | |
time |
Number | |
bits |
Number | |
nonce |
Buffer | |
height |
Number | |
chainwork |
BN |
- Source:
Members
(static, constant) MAX_CHAINWORK :BN
The max chainwork (1 << 256).
Type:
- Source:
Methods
(static) fromBlock(block, prevopt, nullable) → {ChainEntry}
Instantiate chainentry from block.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
block |
Block | MerkleBlock | ||
prev |
ChainEntry |
<optional> <nullable> |
Previous entry. |
- Source:
Returns:
- Type
- ChainEntry
(static) isChainEntry(obj) → {Boolean}
Test whether an object is a ChainEntry.
Parameters:
| Name | Type | Description |
|---|---|---|
obj |
Object |
- Source:
Returns:
- Type
- Boolean
format() → {Object}
Return a more user-friendly object.
- Source:
Returns:
- Type
- Object
fromBlock(block, prevopt, nullable) → {this}
Inject properties from block.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
block |
Block | MerkleBlock | ||
prev |
ChainEntry |
<optional> <nullable> |
Previous entry. |
- Source:
Returns:
- Type
- this
fromJSON(json) → {this}
Inject properties from json object.
Parameters:
| Name | Type | Description |
|---|---|---|
json |
Object |
- Source:
Returns:
- Type
- this
fromOptions(options) → {this}
Inject properties from options.
Parameters:
| Name | Type | Description |
|---|---|---|
options |
Object |
- Source:
Returns:
- Type
- this
getChainwork(prevopt, nullable) → {BN}
Calculate the chainwork by adding proof to previous chainwork.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
prev |
ChainEntry |
<optional> <nullable> |
Previous entry. |
- Source:
Returns:
chainwork
- Type
- BN
getJSON() → {Object}
Serialize the entry to an object more suitable for JSON serialization.
- Source:
Returns:
- Type
- Object
getProof() → {BN}
Calculate the proof: (1 << 256) / (target + 1)
- Source:
Returns:
proof
- Type
- BN
getSize() → {Number}
Get serialization size.
- Source:
Returns:
- Type
- Number
hasBit(bit) → {Boolean}
Test whether the entry contains a version bit.
Parameters:
| Name | Type | Description |
|---|---|---|
bit |
Number |
- Source:
Returns:
- Type
- Boolean
hasUnknown(network) → {Boolean}
Test whether the entry contains an unknown version bit.
Parameters:
| Name | Type | Description |
|---|---|---|
network |
Network |
- Source:
Returns:
- Type
- Boolean
isGenesis() → {Boolean}
Test against the genesis block.
- Source:
Returns:
- Type
- Boolean
read(br)
Inject properties from serialized data.
Parameters:
| Name | Type | Description |
|---|---|---|
br |
bio.BufferReader |
- Source:
toHeaders() → {Headers}
Convert the entry to a headers object.
- Source:
Returns:
- Type
- Headers
toInv() → {InvItem}
Convert the entry to an inv item.
- Source:
Returns:
- Type
- InvItem
write(bw) → {BufioWriter}
Serialize the entry to internal database format.
Parameters:
| Name | Type | Description |
|---|---|---|
bw |
BufioWriter |
- Source:
Returns:
- Type
- BufioWriter