Method and system for risk scoring anonymized transactions

A system for risk scoring a blockchain transaction, comprising:

• a memory of a processing server configured to store blockchain data associated with a blockchain, wherein the blockchain data includes at least a plurality of blocks, each block including at least a block header and one or more transaction values, where each block header includes at least a timestamp, a block reference, and a transaction reference and each transaction value includes data related to a blockchain transaction including at least a sending address, a recipient address, and a transaction amount;
• a receiving device of the processing server configured to receive a new transaction value related to a proposed blockchain transaction and a node identifier associated with a node included in a blockchain network associated with the blockchain, wherein the new transaction value includes at least a user address, a transacting address, and a blockchain amount;
• a querying module of the processing server configured to execute a first query on the memory to identify a first plurality of transaction values included in the plurality of blocks in the blockchain where the sending address or recipient address is associated with a transacting cryptographic key pair, wherein the transacting address is associated with the transacting cryptographic key pair;
• a determination module of the processing server configured to determine a risk score for the proposed blockchain transaction based on at least the data included in each of the first plurality of transaction values and the new transaction value;
• and
• a transmitting device of the processing server configured to electronically transmit the determined risk score in response to the received new transaction value.