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Crea Developer Portal - Glossary

Understanding the common terms used by the Crea blockchain is an important part of being able to build applications and tools that use it.

This section outlines several of the common terms.

More terms and information can be found on the FAQ.

Chain Basics

Decentralized ledger and consensus protocol
Crea (blockchain)
Name of the blockchain and platform
formerly the limit of data each account can send/use (replaced by Resource Credits)
Resource Credits
is the limit of data each account can utilize resources on the blockchain (also known as RC)
Vests is underlying token that CREA is derived from, and are share in Crea Power
CREA (currency)
Currency of the blockchain, liquid version of Crea Power
Crea Backed Dollar, $1 worth of CREA
Crea Power
Locked version of CREA which gives account influence on the platform
Operations/Activity/Write requests to the blockchain. A transaction is a submitted update to the Crea blockchain. This can include token transfers, posts/comments, votes, etc.
Every three seconds, the Crea blockchain produces a new block. Each time a new block is produced, the distributed network is updated with all of the transactions that occurred within that block.
Block Header
Information about block, root and witness who signed, etc.
Price feed
Feed that is maintained by witnesses to ensure CBD/CREA price stability
An account is a container for all of the activity associated with a particular user's wallet on the blockchain. This includes all of their tokens, posts, comments, upvotes, transfers, etc.
Each Account has multiple authority and keys to manager different permissions on the platform
Owner authority/permission of account
Keys are used to authenticate transactions. Each key contains a public/private pair. When a transaction is submitted to the Crea blockchain, it is signed by the account owner using their private key. The blockchain is able to determine that the transaction is valid by validating the signiture against the public key from the pair.
Public Key
Public key of account's certain authority
Private Key
Private key to sign a transaction with account's authority, should be kept secret because it grants access to account
Wallet Import Format/Private key, should be kept secret because it grants access to account
Active key
The active key is used to make transfers and place orders in the internal market
Posting key
The posting key is used for posting and voting
Owner key
The owner key is the master key for the account and is required to change the other keys
A post is a root level comment - one that has no "parent".
A comment is text content that is stored on the blockchain. Comments can be linked to other comments as "replies" through parent/child relationships.
A vote is an expression of like (upvote) or dislike (downvote) for a post/comment. The Crea blockchain uses the votes that a post/comment has received to determine it's share of the rewards.
Account's reputation on platform
Markdown language
Easy to read and write, plain text format language commonly used to create Creary articles
The 'production' Crea blockchain network wherein real CREA is held and actual transactions take place.
The assignment of a portion your Crea Power for use to another account (cannot be spent, can be reclaimed)
Convert CREA to Crea Power and vice-versa with PowerDown
Reward Pool
Every day, a fixed amount of CREA tokens are allocated to the network reward fund, commonly called the "reward pool." These get distributed to authors and curators for posting and voting on content.


Delegated Proof of Stake
A node is an instance of the Crea blockchain running on a server.
Witness is a position/role for the people who are chosen by community (delegate trust) to support platform and run consensus protocol to ensure security and validity of transactions/blocks on the blockchain. A witness is responsible for signing and validating blocks for the Crea blockchain.
Process to release protocol/blockchain consensus upgrades
Process to release protocol/blockchain software improvements
Witness Vote
Voting/electing witnesses with account's stake


Pending Transaction
Transaction that is pending and to be included to the blockchain
Transaction Hex
Hash of the transaction
Transaction signature signed by account with private key
Broadcast Transaction
Event where signed transaction is broadcasted to the network, so that witnesses could validate and include in block
Virtual operation
Operations that are derived from blockchain activity, but aren't actually stored as operations themselves (ex. curation and author rewards). They happen based on consensus from the blockchain based on other normal operations


Posts/Disccussions that are highly valued with shorter time interval update
Posts/Disccussions from followers of particular account
Posts/Disscussions that are still actively being engaged
Newly created posts
Posts which was paid out recently
Pending Payout
Estimated pending payout for blog posts/comments
A tag is a descriptor that is used to identify the type of content contained within a comment/post.
Account that is being followed
Account that is following the user
State of blockchain for path - accounts/tags/filters/posts
Dynamic Global Properties
Current blockchain global properties which is being in each block
Median Price
Median Price feed provided by all witnesses
A crea user who upvotes a post by using their daily voting power to assign value to a post that they believe has good quality content and should be seen and the author rewarded
Curation reward
The reward given to a curator, which is their portion of the 50% allocated to all curators that have upvoted a post
(Reblog) re-posting another authors' post in your blog feed for your followers list


Conversion Requests
Request submitted for Converting CBD to CREA
Order Book
Internal market order book to exchange CBD<->CREA
Smart Media Tokens