Abstract: Systems and methods are disclosed for establishing information on a state of a machine-executable contract in the context of unspent transactions (UTXOs), blockchain and deterministic finite automaton implementation of contracts, and determination of states within those. Stages of a method include determining information of interest and codes or tags identifying that information, constructing metadata associated with those codes or tags, and combining the metadata with a public key for an agent associated with the information. ScriptPubKey values of each script are used to provide keys for constructing a database and mapping the keys from the scriptPubKey values, linked to the information. A derivation of script hash addresses from the scriptPubKey values is used to populate a digital wallet. A search and match algorithm is used to find UTXOs with matching script hash addresses on a blockchain. The database is populated with UTXOs that match the script hash addresses and keys to complete the combinations.

Abstract: There may be provided a computer-implemented method. The computer-implemented method includes: i) broadcasting a transaction, by a node in a blockchain network, to a congress pool to join a congress formed of a group of nodes; ii) after the congress has accepted a request from a requester to activate a script, preparing, by the node, a blockchain transaction cryptographically locked with a public key associated with the congress; iii) cooperatively generating, by the node in cooperating with other nodes of the group, a valid cryptographic signature for the transaction to spend the transaction; iv) after the blockchain transaction has been unlocked, receiving data from the plurality of information providing systems; v) determining a centre point for the data received from the plurality of information providing systems; and vi) activating, by the node in cooperation with other nodes of the congress, the script based on the centre point.

Abstract: There may be provided a computer-implemented method. The computer-implemented method includes: i) broadcasting a transaction, by a node in a blockchain network, to a congress pool to join a congress formed of a group of nodes; ii) after the congress has accepted a request from a requester to activate a script, preparing, by the node, a blockchain transaction cryptographically locked with a public key associated with the congress; iii) cooperatively generating, by the node in cooperating with other nodes of the group, a valid cryptographic signature for the transaction to spend the transaction; iv) after the blockchain transaction has been unlocked, receiving data from the plurality of information providing systems; v) determining a centre point for the data received from the plurality of information providing systems; and vi) activating, by the node in cooperation with other nodes of the congress, the script based on the centre point.

Abstract: Systems and methods are disclosed for establishing information on a state of a machine-executable contract in the context of unspent transactions (UTXOs), blockchain and deterministic finite automaton implementation of contracts, and determination of states within those. Stages of a method include determining information of interest and codes or tags identifying that information, constructing metadata associated with those codes or tags, and combining the metadata with a public key for an agent associated with the information. ScriptPubKey values of each script are used to provide keys for constructing a database and mapping the keys from the scriptPubKey values, linked to the information. A derivation of script hash addresses from the scriptPubKey values is used to populate a digital wallet. A search and match algorithm is used to find UTXOs with matching script hash addresses on a blockchain. The database is populated with UTXOs that match the script hash addresses and keys to complete the combinations.

Abstract: Computer-implemented systems and methods are detailed for establishing information on states of a machine executable contract, for instance in the context of unspent transactions (UTXOs), blockchain and deterministic finite automaton (DFA) implementation of contracts and the determination of states within those. The stages can include determining the information of interest and the codes or tags identifying that information, constructing the metadata associated with those codes or tags, combining that with a public key for an agent that will be associated with the information. The scriptPubKey values of each script may be used to provide the keys for use in constructing an external database and more specifically mapping the keys from the scriptPubKey values, linked to the information of interest. To obtain the other half of the combination, there is a derivation of the script hash addresses from the scriptPubKey values, with those being used to populate a digital wallet.

Abstract: There may be provided a computer-implemented method. The computer-implemented method includes: i) broadcasting a transaction, by a node in a blockchain network, to a congress pool to join a congress formed of a group of nodes; ii) after the congress has accepted a request from a requester to activate a script, preparing, by the node, a blockchain transaction cryptographically locked with a public key associated with the congress; iii) cooperatively generating, by the node in cooperating with other nodes of the group, a valid cryptographic signature for the transaction to spend the transaction; iv) after the blockchain transaction has been unlocked, receiving data from the plurality of information providing systems; v) determining a centre point for the data received from the plurality of information providing systems; and vi) activating, by the node in cooperation with other nodes of the congress, the script based on the centre point.

Abstract: Computer-implemented systems and methods are detailed for establishing information on states of a machine executable contract, for instance in the context of unspent transactions (UTXOs), blockchain and deterministic finite automaton (DFA) implementation of contracts and the determination of states within those. The stages can include determining the information of interest and the codes or tags identifying that information, constructing the metadata associated with those codes or tags, combining that with a public key for an agent that will be associated with the information. The scriptPubKey values of each script may be used to provide the keys for use in constructing an external database and more specifically mapping the keys from the scriptPubKey values, linked to the information of interest. To obtain the other half of the combination, there is a derivation of the script hash addresses from the scriptPubKey values, with those being used to populate a digital wallet.

Abstract: The invention relates to a technique for implementing, controlling and automating a task or process on a blockchain such as, but not limited to, the Bitcoin blockchain. The invention is particularly suited for, but not limited to, automated execution of contracts such as smart contracts for financial agreements. However, other types of tasks and non-financial contracts can be implemented. The invention can be viewed as the implementation or incarnation of a state machine or DFA on a blockchain by using the unspent outputs of blockchain Transactions to represents the states of the machine, and spending of those outputs as the transition of the machine from one state to another. The invention provides a technical realisation and implementation of a mathematical model of computation conceived as an abstract machine that can be in one of a finite set of states, and can change from one state to another (transition) when a triggering event of a finite set (called input) occurs.