Network-level, key-based platform linking

A system comprising:

• an intermediary platform;
• and
• a set of member platforms within member computing ecosystem communicatively connected to the intermediary platform, wherein the intermediary platform comprises one or more processors;
• and one or more memories storing processor-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• receiving, originating from a first member platform within the member computing ecosystem, a member-specific assertion request encapsulating an assertion request from a user of the first member platform, wherein the assertion request comprises an authorized assertion and a first member-specific identifier;
• determining a local construct of a cross-platform data object corresponding to the first member-specific identifier;
• determining, using the local construct of the cross-platform data object, a second member platform based on a second member-specific identifier within the local construct of the cross-platform data object;
• providing an internal member-specific assertion request to an internal service associated with the second member platform based on the second member-specific identifier, wherein the internal member-specific assertion request comprises the first member-specific identifier and the authorized assertion;
• providing, via the internal service, an incoming member-specific assertion request to the second member platform, wherein the incoming member-specific assertion request comprises the authorized assertion;
• responsive to receiving a user input at the second member platform, receiving an assertion response at the internal service and from the second member platform;
• and
• providing the assertion response to the first member platform.

One or more non-transitory computer-readable media storing processor-executable instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

• receiving, originating from a first member platform within a member computing ecosystem, a member-specific assertion request encapsulating an assertion request from a user of the first member platform, wherein the assertion request comprises an authorized assertion and a first member-specific identifier;
• determining a local construct of a cross-platform data object corresponding to the first member-specific identifier;
• determining, using the local construct of the cross-platform data object, a second member platform based on a second member-specific identifier within the local construct of the cross-platform data object;
• providing an internal member-specific assertion request to an internal service associated with the second member platform based on the second member-specific identifier, wherein the internal member-specific assertion request comprises the first member-specific identifier and the authorized assertion;
• providing, via the internal service, an incoming member-specific assertion request to the second member platform, wherein the incoming member-specific assertion request comprises the authorized assertion;
• responsive to receiving a user input at the second member platform, receiving an assertion response at the internal service and from the second member platform;
• and
• providing the assertion response to the first member platform.