Siafund (SF) Tokens Explained

What are Siafunds?

Siafunds (SF) are special tokens used within the Sia decentralized storage network. Their primary purpose is to enable holders to claim a portion of the network’s revenue, distributed as Siacoin (SC). When a storage contract on Sia completes, a part of the storage fees (3.9%) paid by renters is allocated to Siafund holders. This fee is drawn from the costs associated with storage, bandwidth, and collateral on the Sia network1 2 3 4+3.

Key Features & Tokenomics

Attribute	Details
Total Supply	10,000 SF (fixed since network launch)
Distribution	Initially: 88.4% held by Skynet Labs (Nebulous Inc.), 11.6% by other investors. Some later sales reduced Skynet's share to ~86%1 4.
Utility	SF holders claim accrued Siacoin (SC) from finished contracts (3.9% revenue share)1 2 3 4+3.
Token Type	Security token (classified as a security by the U.S. SEC in 2019)1 2 4.
Earning Mechanism	Revenue sharing—payouts happen after contract completion, typically every block (~10 minutes).
Liquidity	Very limited—fewer than 700 transactions and under 200 addresses holding SF (as of 2023)1.

Regulatory and Historical Context

SEC Classification: In 2019, the U.S. SEC classified Siafund (SF) as a security due to its revenue-sharing purpose and conducted a review of its initial distribution2 4.
Auctions & Sales: Siafunds were sold via different mechanisms: originally, in 2014, through Sianotes (later converted to SF) and, notably, in a tokenized securities offering in 2018 with a one-year lockup. Most remain with the founding team or their legal entity.

Practical Impact

Investor Niche: Due to its classification, Siafund is a niche asset held mainly by insiders or sophisticated investors.
Revenue Link: The fundamental value of SF is directly tied to the usage and revenue performance of the Sia network. As Sia contracts increase and storage activity grows, so do rewards to SF holders1 3 6.

Summary Table

Token	Total Supply	Revenue Share	Security Status	Claimable Asset	Distribution Type
Siafund (SF)	10,000	3.9%	SEC Security	Siacoin (SC)	Direct sales & auctions

Sources

Revenue-sharing details, supply, and regulatory history: 1 2 3 4+5

In summary: Siafund (SF) tokens are rare, regulated security tokens tied to the ongoing financial activity of the Sia storage platform, rewarding holders with a portion of network earnings in Siacoin.

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