Abstract: Method for providing a ledger of verified nodes for a network of nodes in a quantum internet, comprising: /a/ sending (101), by a central node (N-CH), first qubits (qb1) to a first node (N-U1) and second qubits (qb2) to a second node (N-U2), wherein each first qubit (qb1) is entangled with a second qubit (qb2); /b/ sending (102), by the central node (N-CH), digital coins to each first node (N-U1) and each second node (N-U2); /c/ saving (103) to a ledger: information regarding identities of the first, second and central nodes (N-U1, N-U2, N-CH), and information regarding a comparison of first information determined from the first qubits (qb1) to second information determined from the second qubits (qb2); and /d/ if the first information corresponds to the second information, sending (105), by the first and second nodes (N-U1, N-U2), said digital coins back to the central node (N-CH).