Factom is a decentralized data storage platform that augments the storage and auditing capabilities of the Bitcoin blockchain. Factom provides an an additional data layer that allows users to store and audit data more efficiently and to overcome the storage limitations caused by small block sizes. It also allows organizations to leverage the benefits of blockchain, while providing a mechanism for auditing and ensuring relevant compliance. Factom offers an API that can be used to develop decentralized projects, and is designed to assist government agencies, businesses, and non-profits. The blockchain has a hybrid consensus mechanism, with elements of Proof-of-Existence (PoE), Proof-of-Process (PoP), and Proof-of-Audit (PoA).

Tierion is developing a blockchain solution for verifying data. Tierion's platform will be aimed for businesses and developers. "Proof" will allow businesses to prove the integrity and timestamp of data without depending on a trusted third-party. "Chainpoint" will enable developers to anchor data to the blockchain; giving them the ability to create a verifiable audit trail for data, and timestamp important documents.
Tierion's network is powered by the TNT token.

Stampery provides blockchain data certification services. They enable users to certify the existence, integrity, and ownership of data used on the Bitcoin and Ethereum blockchains. Because of the distributed and decentralized nature of the blockchains, the data on it can be verified by anybody at any time. Stampery uses the information transmitted on the bitcoin blockchain to generate dependable proof of existence, proof of integrity, and proof of ownership. Stampery's API lets users prove the existence, ownership and integrity of all their data by inserting unique identifiers for their files and data directly into the blockchains. The timestamps created by Stampery's API can be verified independently by anyone.