The $TEHC Portal appears to be related to cryptocurrency presales, potentially involving ETH contributions for receiving tokens. Similar projects include NOTHING Presale which contributed $ETH to receive $NTHNG with a 50% liquidity allocation, 35% for presale, and 10% for team/marketing. These projects feature no taxes and ownership renounced, with liquidity locked. ETHStable Presale and ETHY Presale are also related but have limited available information.