Glossary
A
Announcement
Announcement is a statement of call hash for the proxy to execute in some future block. Required for some proxies where delay is specified.
Asset Teleportation
Asset Teleportation is a movement of an asset by destroying it on one side and creating a clone on the other side
B
Barrier
A generic filter which returns whether or not XCM may pass and be executed. If they do not pass the barrier, they are not executed. The barrier is the final filter before XCM execution. It implements the ShouldExecute
trait and therefore takes as input an XCM and returns a bool indicating whether it should be executed.
Burning
The process of destroying existing assets.
C
Candidacy Bond
Candidacy bond is fixed amount to deposit to become a candidate.
Candidate
Candidate is a self-promoted collator, who deposited a candidacy bond to participate in collation process
Collator
Collator is a node that gathers collation information and communicates it to relay chain to make a block.
D
Delay
Delay is number of block that should pass from announcement before call execution.
Delegatee
Delegatee is an account that was granted call execution rights with proxy creation.
Delegator
Delegator is an account that granted call execution rights with proxy creation.
F
Freeze
Freeze
is reserving some amount from the account. For example, to make a transaction, the amount to be sent might be first frozen, then the checks for the transaction will be made. If the checks pass, the amount will be deducted from the sender’s account and added to the recipient’s. Freeze
should be preferred if the reserved money can be lost/sent due to external reasons.
Fungible Asset
An asset where any unit of it worth the same. Opposite of nonfungible_asset
NonFungible Asset
An asset meaning that it is not interchangeable with other assets of the same type. For example, a non-fungible asset could be an NFT, while a fungible asset could be a currency token.
H
Hold
Hold
means reserving/holding an amount of balance from an account. The Hold
amount cannot be spent, but still belongs to the account. For example, depositing modifying the state, and occupying space. This deposit will be repaid once the occupied space is freed.
I
Invulnerable
Invulnerable is a permissioned collator, that will always be part of the collation process
J
Junction
Junction is a single item in a path to describe a relative location (think of dir
or dir/$file_path
as a junction).
Junctions
Junctions is multiple Junction
s, formed only through multilocation construction.
L
Length Fee
A fee proportional to the encoded length of the transaction.
Lock
Nearly the same as [Hold](#hold)
, with 2 major differences:
- Locks can store the reason for the locking operation.
- Locks are overlapping, whereas Reserve/Hold’s are additive. Example:
- Apply
Hold
to account A for 20 units, then apply anotherHold
to account A for 10 units -> a total of 30 units will be reserved/hold - Apply
Lock
to account A for 20 units, then apply anotherLock
to account A for 10 units -> a total of 20 units will be locked, since 10 is smaller than 20.
- Apply
M
Minting
The process of creating new assets.
MultiAsset
Either an amount of a single fungible asset, or one non-fungible asset.
MultiLocation
A path described by junctions leading to the location.
N
NonFungible Asset
An asset where each unit is worth a different amount and/or is unique in some way. Opposite of fungible_asset.
P
Pot
Pot is a stake that will reward block authors. Block author will get half of the current stake.
Proxy
Proxy is a statement of call execution rights transfer from delegator to delegatee. Specified by proxy_type and delay.
Proxy type
Proxy type is a type of calls that can be executed using this proxy.
Pure account
Pure account is an account that was spawned only to be a delegatee for some proxy.
R
Reserve
Deprecated, use [Hold](#hold)
.
Reserve Asset Transfer
When consensus systems do not have a established layer of trust over which they can transfer assets, they can opt for a trusted 3rd entity to store the assets
T
Thawing
The process of unfreezing an asset after being frozen.
Tip
An optional tip. Tip increases the priority of the transaction, giving it a higher chance to be included by the transaction queue.
U
Unincluded Segment
A sequence of blocks that were not yet included into the relay chain state transition
V
Validation Code
Validation Code is the runtime binary that runs in the parachain
Validation Data
Validation Data is the information passed from the relay chain to validate the next block
W
Weight
The time it takes to execute runtime logic. By controlling the execution time that a block can consume, weight bounds the storage changes and computation per block.
Weight Fee
A fee proportional to amount of weight a transaction consumes.