CheckpointToken (uint256 time, uint256 tokens)
[topic 0]:0xce749457b74e10f393f2c6b1ce4261b78791376db5a3f501477a809f03f500d6
0x0000000000000000000000000000000000000000000000000000000063ed8f4c00000000000000000000000000000000000000000000021e19e0c9bab2400000