Systems and methods for communication, storage and processing of data provided by an entity over a blockchain network

1. A computer-implemented method comprising:

obtaining a first key, the first key being one of a fixed set of keys distributed to nodes that are eligible to submit data for an entity to a blockchain;

generating first data (r j ) of the entity for submission to the blockchain;

encrypting the first data (r j ) using at least the first key; and

submitting the encrypted first data to a mixing service, the mixing service being configured to generate a mixed transaction based on the encrypted first data and at least one other encrypted data submission from one or more eligible nodes.

2. The method of claim 1 , wherein the first key is a first key share ( ) of a private key ( ), the first key share (k j ) being one of a plurality of key shares that are distributed to eligible nodes and that are used for collaboratively constructing the private key (k).

3. The method of claim 2 , wherein the first data (r j ) is encrypted using the first key share (k j ) and a public key (Pk C i ) associated with the entity.

4. The method of claim 3 , further comprising:

encrypting the first key share (k j ) using the public key (Pk C i ) associated with the entity;

collaborating with other eligible nodes to generate a secret (kG) using the first key share (k j ); and

providing the encrypted first key share ( ) and the generated secret (kG) to an entity node associated with the entity for use in verifying the validity of the first key share (k j ).

5. The method of claim 4 , wherein the secret (kG) is collaboratively generated based on a secret share joining process.

6. The method of claim 1 , wherein the first data (r j ) comprises an alphanumeric string.

7. The method of claim 6 , wherein the first data (r j ) comprises a concatenation of a data string and a second string containing at least a portion of a public key (Pk C i ) associated with the entity.

8. The method of claim 7 , wherein the first data (r j ) further includes a third string identifying a service provided by the entity.

9. The method of claim 2 , wherein obtaining the first key comprises receiving the first key share (k j ) from the entity.

10. The method of claim 9 , wherein the first key share is received from the entity in response to a transfer of tokens to an entity node associated with the entity for a service rendered by the entity.

11. The method of claim 2 , wherein the first data (r j ) is encrypted using an exclusive-or encryption.

12. The method of claim 1 , wherein the first key (k i ) is a first public key ( ) associated with the entity, the first public key (Pk C i j ) being one of a first set of node-specific public keys that are generated by the entity and that are distributed to eligible nodes, each of the public keys in the first set having a corresponding private key that is retained by the entity.

13. The method of claim 1 , wherein the mixed transaction specifies a first quantity of tokens to transfer to the entity, the first quantity depending on a number of encrypted data submissions of the entity that are included as inputs in the mixed transaction.

14. A computing device to participate in a process for submitting data for an entity to a blockchain, the computing device comprising:

a processor; and

memory including executable instructions that, as a result of execution by the processor, cause the computing device to carry out the method claimed in claim 1 .

15. A non-transitory processor-readable medium storing processor-executable instructions to participate in a process for submitting data for an entity to a blockchain, wherein the processor-executable instructions, when executed by a processor, cause the processor to carry out the method claimed in claim 1 .

16. A computing device to participate in a process for submitting data for an entity to a blockchain, the computing device comprising:

a processor; and

memory including executable instructions that, as a result of execution by the processor, cause the computing device to carry out the method claimed in claim 2 .

17. A computing device to participate in a process for submitting data for an entity to a blockchain, the computing device comprising:

a processor; and

memory including executable instructions that, as a result of execution by the processor, cause the computing device to carry out the method claimed in claim 6 .

18. A computing device to participate in a process for submitting data for an entity to a blockchain, the computing device comprising:

a processor; and

memory including executable instructions that, as a result of execution by the processor, cause the computing device to carry out the method claimed in claim 12 .

19. A computing device to participate in a process for submitting data for an entity to a blockchain, the computing device comprising:

a processor; and

memory including executable instructions that, as a result of execution by the processor, cause the computing device to carry out the method claimed in claim 13 .

20. A non-transitory processor-readable medium storing processor-executable instructions to participate in a process for submitting data for an entity to a blockchain, wherein the processor-executable instructions, when executed by a processor, cause the processor to carry out the method claimed in claim 2 .