FIELD: computer equipment.
SUBSTANCE: invention relates to computer engineering. Technical result is achieved by receiving, by a network consensus node of a network of transaction data blocks and digital signature of transaction data, wherein said transactions include a commit value, a random number and a transaction amount to be transferred from one of the open account or closed account of the first user node to one of the open account or closed account of the second user node, and wherein the digital signature is generated by digitally signing the transaction data using the first user node private key, and the fix value is generated based on the random number and the transaction amount using the fixation pattern; verifying digital signing of transaction data using public key of first user node; and determining that the transaction amount is valid if the fix value is correct based on the random number and the commit pattern and the transaction amount is less than or equal to the balance of one of the open account or closed account of the first user node before transfer of the transaction amount.
EFFECT: technical result consists in improvement of degree of protection of users privacy of blockchains.
9 cl, 6 dwg
