# Filecoin Plus

Filecoin Plus aims to enable the demand side of the Filecoin network and maximize the amount of useful storage on Filecoin by adding a layer of social trust to the network and introducing a novel resource called DataCap. Clients looking to onboard storage onto the network apply to community-selected Notaries to receive DataCap, which can be used to incentivize miners to take storage deals.

# Concepts

Filecoin Plus is based on a set of guiding principles, detailed in FIP-0003 (opens new window), that focus the program on increasing Filecoin's effectiveness at becoming the decentralized storage network for humanity's most important information.

Root Key Holders, Notaries, Clients, and Miners, interact through the allocation and spending of DataCap. Notaries retrieve DataCap in batches and then allocate it to trustworthy Clients that spend the DataCap to fund storage deals. Miners that receive DataCap receive a 10x boost to their quality-adjusted power for the storage space offered in that deal, which increases their block reward share in the network. This creates a mechanism that incentivizes all participants to make Filecoin more useful.

# DataCap

DataCap, when allocated to a client, can be spent by the client in storage deals with miners. Those deals carry a higher deal quality multiplier, which increases the "quality adjusted power" of the storage miner on the network by a factor of 10, yielding better block rewards for the miner over time. DataCap is granted in batches to Notaries who can allocate it to clients that spend the DataCap to fund storage deals. DataCap is consumed as it is used to make deals.

# Notary

Notaries are selected to serve as fiduciaries for the Filecoin Network and are responsible for allocating DataCap to clients with valuable storage use cases. The base responsibilities of notaries include:

  • Allocate DataCap responsibly to clients 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.

You can find a list of current active notaries at plus.fil.org (opens new window).

Notaries are selected through an application process (opens new window). If approved, Root Key Holders (opens new window) (executors of the decisions made by the community on-chain) grant Notary status and DataCap amounts. Those interested in becoming Notaries should apply to this role by filing an Issue in the Notary Governance Repo (opens new window).

# Client

Clients can use their DataCap to incentivize miners to serve their needs - this can include providing additional features and levels of services that meet their specific requirements. In doing so, storage-related goods and services on Filecoin are made more valuable and competitive over time. Notaries vet clients to ensure the client receives DataCap commensurate with their reputation and needs and that the client responsibly allocates that DataCap.

# Using DataCap

# Get DataCap

Clients are required to have an on-chain Filecoin address where DataCap can be received. If you are setting up a new address, make sure to initialize it by sending a minimal amount of FILto it (purchasing some FIL from an exchange, for example).

Note: As of now, DataCap allocations are a single-use credit on a Filecoin address. If you receive an allocation and require more, you should make a new request with a new address that you have initialized like above. FIP-0012 (opens new window) was recently accepted and, once implemented, will allow addresses to receive DataCap multiple times.

Clients get DataCap by making a request to a Notary.

  1. Head over to the Filecoin Plus Registry (opens new window), and proceed with For Clients
  2. Click Get Verified
  3. Click on Automatic Verification. This will take you to an automated Notary, which should be able to provide you with a small amount of DataCap to get you started. https://verify.glif.io/ is an example of such a Notary, which is currently giving 32GiB of DataCap once every 30 days to clients who authenticate themselves with a GitHub account greater than 180 days old.

For DataCap requirements greater than 32GiB - choose General Verification in Step 3 above instead. This will take you to the Notary Registry, where you can request DataCap to a specific Notary. Notaries may specialize in the types of requests they'll choose to support - it is recommended that you select a Notary in your region of operation that also covers the general category of Use Case you would classify yourself under.

# Spend DataCap

Once you have an address with DataCap, you can make deals using DataCap as a part of the payment. Because miners receive a deal quality multiplier for taking FIL+ deals, many miners offer special pricing and services to attract Clients who use DataCap to make deals.

By default, when you make a deal with an address with DataCap allocated, you will spend DataCap when making the deal.

If making deals through the API (opens new window), make sure that the VerifiedDeal parameter is set to true when calling ClientStartDeal.

    "Data": {
      "TransferType": "string value",
      "Root": {
        "/": "bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4"
      "PieceCid": null,
      "PieceSize": 1024
    "Wallet": "f01234",
    "Miner": "f01234",
    "EpochPrice": "0",
    "MinBlocksDuration": 42,
    "ProviderCollateral": "0",
    "DealStartEpoch": 10101,
    "FastRetrieval": true,
    "VerifiedDeal": true

If making deals from the command line, make sure to pass the flag --verified-deal=true as a parameter.

 lotus client deal --verified-deal=true

# Checking 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. verify.glif.io (opens new window)) or by querying your address on a node.

Lotus-shed (opens new window) is a separate package you will need to build and install (run make lotus-shed in the Lotus (opens new window) source directory on your node) to interact with Fil+ commands. These features are slated to be merged into Lotus in the future.

lotus-shed verifreg check-client f00000

# Finding miners to take FIL+ deals

There are a few different ways in which a client can find a miner to take a FIL+ storage deal:

  1. In the For Clients section of the Filecoin Plus Registry (opens new window), there is a Miner Registry (opens new window) which lists a self-selected set of miners who are willing to take Fil+ storage deals
  2. Use a Miner Reputation system such as Filecoin Reputation System (opens new window) or Textile's Miner Index (opens new window) to identify storage miners who can meet your needs
  3. Join the #fil-plus (opens new window) channel on Filecoin Slack to discuss storage options
  4. Hop into the network with your node and query miners (using query-ask) to check their verified deal prices

# Get involved in Fil+ governance

If you are interested in participating in governance and shaping the program, here is how you can get involved: