Management of workflows

A computer implemented method comprising:

• transmitting, by a computer system to a client device associated with a first user, a notification indicating that the first user is to perform a first step of a workflow comprising a series of steps;
• receiving, by the computer system from the client device, a request to perform the first step based on the notification;
• creating, by the computer system, a transaction for the first step, the transaction comprising a description of the first step and a cryptographic key of the first user;
• transmitting, by the computer system, the transaction to the client device;
• receiving, by the computer system from the client device, a signed transaction comprising the transaction and a digital signature of the first user;
• determining, by the computer system, whether the digital signature is valid based on the cryptographic key;
• responsive to determining that the digital signature is valid:
• creating a transaction signature for the first step based on the signed, transaction and a previous transaction signature included in a chain of transaction signatures comprising one or more transaction signatures associated with a previous step of the workflow, wherein the transaction signature comprises a hash of a hash value generated from hashing the signed transaction and a hash of the previous transaction signature;
• storing, in a node of a data storage system, the transaction signature for the first step in the chain of transaction signatures;
• archiving, in an anchor database distinct from the data storage system, an export anchor comprising the transaction signature for the first step and an identifier of the node, the anchor database not including the one or more transaction signatures associated with the previous step of the workflow;
• receiving, by the computer system, an import anchor transmitted from the anchor database, the import anchor created by hashing the export anchor with additional information on the transaction signature,
• wherein the import anchor is stored in the anchor system in addition to being transmitted to the computer system;
• including, by the computer system, the import anchor in the node of the data storage system;
• and
• enabling, by the computer system, the performance of the first step;
• and
• auditing the data storage system to determine whether the transaction signature in the data storage system was modified without authorization, comprising:
• retrieving the import anchor included in the node of the data storage system,
• retrieving, from the anchor database, the import anchor stored in the anchor database;
• comparing the import anchor included in the node and the import anchor from the anchor system to determine whether the transaction signature in the data storage system was modified without authorization responsive to the comparison.