A system (100; 200; 600) for authorizing a blockchain transaction, comprising: a verification network in communication with at least a payer computing device (102, 104) associated with a payer, a verification pool that comprises one or more verification computing systems, and a blockchain network, the verification network comprising: a computing system (202; 652) having a processor and a memory having programming instructions stored thereon, said programming instructions, when executed by the processor, causing the system (202; 652) to perform an operation for authorizing the blockchain transaction, said operation comprising: receiving (302, 404), from the payer computing device (102, 104), a transaction request for the blockchain transaction, the transaction request comprising a first signature, the first signature generated by a first private key associated with the payer by inputting the first private key into a signature algorithm which outputs the first signature; broadcasting (304, 406) a verification request in response to the transaction request to the one or more verification computing systems in the verification pool; assessing, by at least one of the one or more verification computing systems, one or more pre-agreed threshold parameters associated with the transaction request; determining, by the at least one verification computing system, whether the pre-agreed threshold parameters have been satisfied; if the pre-agreed threshold parameters are satisfied, the operation further comprises: perfecting, by the at least one verification computing system, the blockchain transaction, said perfecting comprising generating a second signature using a second private key by inputting the second private key into a signature algorithm which outputs the second signature, and broadcasting the blockchain transaction to the blockchain network; and if the pre-agreed threshold parameters are not satisfied, the operation further comprises: generating, by the one or more verification computing systems, one or more verification offers (122-1, 122-2) comprising a respective one or more second signatures, each of the one or more second signatures generated by a respective one of the one or more verification computing systems using a respective second private key by inputting the second private key into a signature algorithm which outputs the one or more second signatures; transmitting (308, 422) the one or more verification offers (122-1, 122-2) to the payer client device (102, 104) and prompting the payer computing device (102, 104) to confirm the blockchain transaction by selecting at least one of the one or more verification offers (122-1, 122-2); receiving (310, 430), from the payer client device (102, 104), a selection of at least one offer of the one or more verification offers (122-1, 122-2); and broadcasting (312, 436) the blockchain transaction to the blockchain network, in accordance with the selected at least one offer (122-1, 122-2) and the transaction request. receiving (302, 404), from the payer computing device (102, 104), a transaction request for the blockchain transaction, the transaction request comprising a first signature, the first signature generated by a first private key associated with the payer by inputting the first private key into a signature algorithm which outputs the first signature; broadcasting (304, 406) a verification request in response to the transaction request to the one or more verification computing systems in the verification pool; assessing, by at least one of the one or more verification computing systems, one or more pre-agreed threshold parameters associated with the transaction request; determining, by the at least one verification computing system, whether the pre-agreed threshold parameters have been satisfied; if the pre-agreed threshold parameters are satisfied, the operation further comprises: perfecting, by the at least one verification computing system, the blockchain transaction, said perfecting comprising generating a second signature using a second private key by inputting the second private key into a signature algorithm which outputs the second signature, and broadcasting the blockchain transaction to the blockchain network; and perfecting, by the at least one verification computing system, the blockchain transaction, said perfecting comprising generating a second signature using a second private key by inputting the second private key into a signature algorithm which outputs the second signature, and broadcasting the blockchain transaction to the blockchain network; and generating, by the one or more verification computing systems, one or more verification offers (122-1, 122-2) comprising a respective one or more second signatures, each of the one or more second signatures generated by a respective one of the one or more verification computing systems using a respective second private key by inputting the second private key into a signature algorithm which outputs the one or more second signatures; transmitting (308, 422) the one or more verification offers (122-1, 122-2) to the payer client device (102, 104) and prompting the payer computing device (102, 104) to confirm the blockchain transaction by selecting at least one of the one or more verification offers (122-1, 122-2); receiving (310, 430), from the payer client device (102, 104), a selection of at least one offer of the one or more verification offers (122-1, 122-2); and broadcasting (312, 436) the blockchain transaction to the blockchain network, in accordance with the selected at least one offer (122-1, 122-2) and the transaction request.