The Trustlines Network ecosystem aims to promote financial and economic inclusion through decentralized and open source systems. As a technological basis of this ecosystem, the Trustlines Protocol is being built to support a range of use cases by leveraging existing networks of mutual trust and mapping trust-based relationships onto trustless infrastructure. Part of this protocol is the Trustlines Blockchain. The Trustlines Blockchain requires transaction fees and block rewards to be paid in the cryptocurrency native to the blockchain: the Trustlines Network Coins (TLC). TLN are ERC20 tokens which can be converted to TLC by sending them to a bridge contract.