Temporary consensus networks in a resource transfer system
Systems and techniques are provided for a resource transfer system. An instruction to transfer a first quantity of a resource from a first resource pool to a second resource pool may be received. A hold may be placed on a second quantity of the resource in the first resource pool. The held second quantity of the first resource may not be transferred from the first resource pool until the hold is released. Responsive to receiving a message that fulfills a condition on the hold and an instruction to execute the transfer, the hold may be released. A register that is in the first resource pool and is associated with the resource may decremented by the first quantity, and a register that is in the second resource pool and is associated with the resource may be incremented by the first quantity.
1 . A computer-implemented method performed on a data processing apparatus comprising:
sending a request for a trust list to a plurality of stakeholder systems in a transfer chain comprising a plurality of stakeholder systems and a plurality of resource tracking systems, wherein the transfer chain is associated with a transfer;
receiving trust lists for each of the plurality of stakeholder systems in the transfer chain;
determining an intersection of nodes on the received trust lists to generate a temporary consensus network wherein member nodes of the temporary consensus network are nodes from the intersection of nodes on the received trust lists;
sending requests to stakeholder systems, from the plurality of stakeholder systems in the transfer chain, that are part of a destination transfer that the stakeholder systems place holds on specified quantities of specified resource types in specified resource pools at a specified ones of the plurality of resource tracking systems;
receiving confirmation that the stakeholder systems to which the requests to place the holds were sent have placed the holds, wherein the confirmation comprises either prepared transfer receipts generated by each of the plurality of resource tracking systems in the transfer chain or a receipt from a specified party;
receiving acknowledgements from each stakeholder system in the transfer chain of an agreement to participate in the transfer associated with the transfer chain;
sending either the prepared transfer receipts or the receipt from the specified party to member nodes of the temporary consensus network;
receiving from at least a threshold number of the member nodes of the temporary consensus network a statement indicating that the temporary consensus network has approved the transfer associated with the transfer chain; and
sending the statements from the at least a threshold number of the member nodes of the temporary consensus network to the stakeholder systems.
2 . The computer-implemented method of claim 1 wherein the plurality of stakeholder systems comprises a sender, a receiver, at least one intermediary.
3 . The computer-implemented method of claim 1 , wherein the threshold number of member nodes is ⅓ of the number of member nodes.
4 . The computer-implemented method of claim 3 , wherein the temporary consensus network approved the transfer when a quorum of member nodes determine that the transfer is approved based on either one or more prepared transfer receipts or a receipt from a specified party.
5 . The computer-implemented method of claim 4 , wherein a quorum is ⅔ of the number of member nodes.
6 . The computer-implemented method of claim 1 , wherein the number of member nodes of the temporary consensus network is greater than a minimum number that is based on fault tolerances specified by the stakeholder systems.
7 . The computer-implemented method of claim 6 , wherein the fault tolerances are specified as a minimum number of Byzantine failures the temporary consensus network can withstand.
8 . A computer-implemented system for resource transfer comprising:
a processor that sends a request for a trust list to a plurality of stakeholder systems in a transfer chain comprising a plurality of stakeholder systems and a plurality of resource tracking systems, wherein the transfer chain is associated with a transfer,
receives trust lists for each of the plurality of stakeholder systems in the transfer chain;
determining an intersection of nodes on the received trust lists to generate a temporary consensus network wherein member nodes of the temporary consensus network are nodes from the intersection of nodes on the received trust lists,
sends requests to stakeholder systems, from the plurality of stakeholder systems in the transfer chain, that are part of a destination transfer that the stakeholder systems place holds on specified quantities of specified resource types in specified resource pools at a specified ones of the plurality of resource tracking systems,
receives confirmation that the stakeholder systems to which the requests to place the holds were sent have placed the holds, wherein the confirmation comprises either prepared transfer receipts generated by each of the plurality of resource tracking systems in the transfer chain or a receipt from a specified party,
receives acknowledgements from each stakeholder system in the transfer chain of an agreement to participate in the transfer associated with the transfer chain,
sends either the prepared transfer receipts or the receipt from the specified party to member nodes of the temporary consensus network,
receives from at least a threshold number of the member nodes of the temporary consensus network a statement indicating that the temporary consensus network has approved the transfer associated with the transfer chain, and
sends the statements from the at least a threshold number of the member nodes of the temporary consensus network to the stakeholder systems.
9 . The system of claim 8 wherein the plurality of stakeholder systems comprises a sender, a receiver, at least one intermediary.
10 . The system of claim 8 , wherein the threshold number of member nodes is ⅓ of the number of member nodes.
11 . The system of claim 10 , wherein the temporary consensus network approved the transfer when a quorum of member nodes determine that the transfer is approved based on either one or more prepared transfer receipts or a receipt from a specified party.
12 . The system of claim 11 , wherein a quorum is ⅔ of the number of member nodes.
13 . The system of claim 8 , wherein the number of member nodes of the temporary consensus network is greater than a minimum number that is based on fault tolerances specified by the stakeholder systems.
14 . The system of claim 13 , wherein the fault tolerances are specified as a minimum number of Byzantine failures the temporary consensus network can withstand.