Computer-implemented system and method for generating and extracting user related data stored on a blockchain
A computer implemented system and a method for providing user related data, such as reputational information, on users of a blockchain involved in transactions is detailed. The method includes an approach for evaluating fulfilment of transactions, particularly in the context of contracts, and then providing a record of that on the blockchain through reputational information. As a result, at a late time, this reputational information can be retrieved. Similar reputational information for other transactions can be retrieved and linked to the same user, for instance based on the use of a hash of the master public key for a user. Aggregate reputational information can be computed from the pieces of reputational information retrieved.
1. A method of making a record of user-related data, the method comprising:
a. defining a transaction between digital wallets of users, wherein the transaction is defined by a deterministic finite automaton (DFA) implemented via computing agents;
b. implementing the transaction using P2SH multi-signature outputs on a blockchain, wherein the DFA validates transaction inputs using signature scripts;
c. automatically evaluating, by the DFA, fulfillment of the transaction to generate a user-related data expression;
d. constructing a reputation transaction as a P2SH multi-signature blockchain transaction that includes:
a hash of a master public key of a user as attributable information;
transaction type metadata; and
the user-related data expression in transaction metadata; and
e. broadcasting the reputation transaction to the blockchain.
2. A method according to claim 1 , wherein the user-related data expression indicates a fulfilment of the transaction involving the user.
3. A method according to claim 1 , wherein the user-related data expression indicates a fulfilment of a prior transaction involving the user.
4. A method according to claim 1 , wherein the user-related data expression is a user fulfilment expression.
5. A method according to claim 1 , wherein the method further comprises evaluating the user-related data expression, wherein the evaluation gives rise to a decision.
6. A method according to claim 5 , wherein the decision gives rise to an action and/or a modification being made.
7. A method according to claim 1 , wherein the user-related data expression is evaluated relative to a threshold and/or a range.
8. A method according to claim 7 , wherein a value to one side of the threshold may result in a first decision.
9. A method according to claim 8 , wherein a value to another side of the threshold may result in a second decision, different from the first decision.
10. A system for implementing user-related data records on a blockchain, the system comprising:
a. a plurality of digital wallets operating on one or more computing platforms that:
store public-private key pairs for users;
generate transaction requests; and
validate transaction fulfillment;
b. computing agents operating on the one or more computing platforms that implement a deterministic finite automaton (DFA), wherein the DFA:
defines transactions between digital wallets of users
implements transactions using P2SH multi-signature outputs
validates transaction inputs using signature scripts
automatically evaluates transaction fulfillment to generate user-related data expressions;
c. a blockchain platform on the one or more computing platforms that:
processes P2SH multi-signature transactions that include:
a hash of a master public key of user as attributable information;
transaction type metadata;
user-related data expressions in transaction metadata;
broadcasts reputation transactions via a blockchain interface; and
maintains transaction history linked by master public keys.