Bitcredit Protocol follows the same ethos as Bitcoin: it is open source and permissionless. No central authority grants permission to participate. Feel free to use these logos in that spirit.
Use freely but not in ways that falsely imply official endorsement. There is none.
The Bitcredit logo reflects that the protocol is part of the complete Bitcoin stack. The logo replaces the familiar coin shape with the outline of a bill of exchange, the foundational commercial credit instrument at the heart of Bitcoin's credit money layer.