Frequently Asked

What is Filecoin?
Filecoin is a peer-to-peer network that allows anyone to store and retrieve data on the internet. Built-in economic incentives ensure that files are stored and retrieved reliably and continuously for however long a user specifies. Read more on the Filecoin docs here.
What is Filecoin Plus?
A social layer mechanism that incentivizes all participants to make Filecoin more useful. Fil+ is a community governed program, where community members can make decisions to help increase the usefulness of the Filecoin Network and help onboard useful data. Read more on the Filecoin Plus docs here.
How does Filecoin Plus work?
Root key-holders, notaries, data owners and storage providers, interact through the allocation and spending of DataCap. Notaries apply through community governance and work with the root key holders to get a grant of DataCap, which they can then allocate out to data owners. Those data owners are then able to deploy DataCap to the Storage Providers through verified deals. Read more on the Filecoin Plus docs here.
What is DataCap?
The resource within the Filecoin Network that goes from notaries to trustworthy data owners. Data owners can use DataCap to make storage deals, which are labeled on chain as verified deals that result in a 10x boost to the storage provider’s quality-adjusted power for the storage space offered in that deal, which increases their block reward share in the network. Read more on the Filecoin Plus docs here.
Where is the data stored?
Once deals are made, the data is sent to the Storage Provider (SP). Storage Providers operate servers responsible for storing files and proving they have stored the files correctly over time. Data onboarded to the Filecoin network is stored where the servers of the SPs are located.
How much data can I store?
Based on the size of the dataset being onboarded, there are three different paths to receiving DataCap.

The first is a nearly instant process using an automated-notary at for authentication via Github (so a Github account is necessary). Approval will offer at least 64 GiB of DataCap, which is useful as a starting point for data owners that are new to Filecoin.

Second, data owners can go through General Verification, where they work with individual Filecoin Plus notaries to get an allocation typically in the range of 10-50 TiB of DataCap. Required due diligence is completed by the notary and data owner. Individual notaries have say over what they require for this due diligence and what processes they use — sometimes they may operate only in a specific geographic area or with data associated with specific fields of work.

Finally, for projects requiring upwards of 500 TiB of DataCap, data owners can use the large datasets pipeline. Applications are placed before the entire Filecoin Plus community of notaries to help audit and vet the data owner’s application, source of data, and in some cases, the data itself. In this path, DataCap is allocated in tranches over time.
What are the requirements to get DataCap?
Data owners are required to have an on-chain Filecoin address where DataCap can be received. You will need an address to proceed with getting DataCap in any of the defined ways.

Once a data owner has an address with DataCap, you can make deals using DataCap as a part of the payment. Because SPs receive a deal quality multiplier for taking Fil+ deals, many SPs offer special pricing and services to attract data owners who use DataCap to make deals.
What is a Notary?
Notaries are selected to serve as fiduciaries for the Filecoin Network and are responsible for allocating DataCap to data owners with valuable storage use cases. The base responsibilities of notaries include:
  • Allocate DataCap responsibly to data owners to subsidize reliable and valuable storage on the network.
  • Ensure that in the allocation of the DataCap, no party is given excessive trust in any form that might jeopardize the network.
  • Follow operational guidelines, keep a record of decision flow, and respond to any requests for audits of their allocation decisions.
  • Participate in the proposals and discussions to improve the program and network

You can find a list of current active notaries at Notaries are selected through an application process. If approved, root key-holders (executors of the decisions made by the community on-chain) grant notary status and DataCap amounts. Those interested in becoming Notaries should apply for this role by filing an Issue in the notary governance repo.
Where can I see the active Notaries?
The Notary leaderboard tracks active Fil+ Notaries, including their average time-to-DataCap granted, how many DataCap applications they have approved, where they are based, and their activity in the Fil+ ecosystem.
How can I get in contact with Storage Providers?
There are a few different ways in which a data owners can find a storage provider to take a Filecoin Plus storage deal:
  1. In the For Clients section of the Filecoin Plus Registry app, there is a Storage Provider Registry which lists a self-selected set of storage providers who are willing to take Filecoin Plus storage deals
  2. Use a Reputation system such as FilRep or Textile’s Miner Index to identify storage providers who can meet your needs
  3. Join the #fil-plus channel and/or #fil-deal-market on Filecoin Slack to discuss storage options
  4. Hop into the network with your node and query storage providers (using query-ask) to check their verified deal prices

How can I get involved with the Filecoin Plus program?
If you are interested in participating in governance and shaping the program, here is how you can get involved:
Create and comment on open issues and discussions in the notary governance repo.
How can I check my remaining DataCap balance?
Once you have received DataCap to an address, you can check the remaining balance either by visiting a site that enables this (e.g. or by querying your address on a node (e.g., using “lotus filplus check-client-datacap”).
Why did my application get rejected?
Applications may get rejected when enough information was not provided when answering questions on the application or if the information on the application does not seem in line with how much DataCap was requested. Data owners can always apply again if their previous application was rejected.
When will I know my application went through?
As of now, each application goes through via Github. Sign up for GitHub notifications so you receive an email once your application gets approved.
Why is my application taking so long to get approved?
There is an influx of applications and the community works hard to make sure each application is trustworthy. The notaries do due diligence on every application that goes through, to make sure that each application is a real data owner with valid data.
Do you have data to store?
The Fil+ program provides a network block reward subsidy. Apply today to get started.