Work provenance in computing pools
A system and method for participating in and operating a distributed computing pool are disclosed. Computing pools combine computational resources from a plurality of computing devices over a network by splitting jobs into smaller jobs and distributing those smaller jobs to the computing devices so that they can be solved in parallel with little or no overlap in the work performed. The computing devices attempt to find solutions to the smaller jobs. Solutions found are signed and submitted back to the pool. The pool uses the signature to confirm the true origin of the solution and that the solution has not been tampered with.
1. A method for participating in a computing pool that combines computational resources over a network, the method comprising:
authenticating a computing device by sending a username, a password, and a public key from the computing device to the pool via the network, wherein the public key corresponds to a private key associated with the computing device;
sending a connection request from the computing device to the pool;
receiving at the computing device a response to the connection request from the pool, wherein the response comprises a job;
executing the job on the computing device to calculate a solution;
signing the solution on the computing device with a signature based on the private key;
sending the signed solution from the computing device to the pool;
receiving a reward from the pool in response to submitting the signed solution if the signature of the signed solution is verified;
authenticating a second computing device by sending a second username and a second password from the second computing device to the pool via the network;
sending a second connection request from the second computing device to the pool;
receiving at the second computing device a second response to the second connection request from the pool, wherein the second response comprises a second job;
executing the second job on the second computing device to calculate a second solution;
sending the second solution in unsigned form from the second computing device to the pool; and
receiving a reduced reward from the pool in response if the unsigned second solution is valid and the pool is first to solve a blockchain block corresponding to the second solution.
2. The method of claim 1 , further comprising creating an SSL/TLS connection from the computing device to the pool.
3. The method of claim 1 , wherein the reward is received from the pool in response to submitting the signed solution if (i) the signature of the signed solution is verified, (ii) the signed solution is valid, and (iii) the pool is first to solve a blockchain block.
4. The method of claim 1 , further comprising receiving at a third computing device a share rejected notification from the pool in response to submitting an unsigned third solution to the pool.
5. A method for operating a computing pool, the method comprising:
receiving a connection request from a computing device to a pool;
responding to the connection request by sending a job to the computing device;
waiting for the computing device to execute the job and respond with a solution signed by a private key;
verifying the signature of the solution with a public key;
verifying the solution;
granting a first reward to the computing device if the signature is properly verified;
rejecting solutions that are not properly verified;
determining whether the solution is a block;
submitting the solution to a blockchain node;
receiving a username and a password from a second computing device via a network to authenticate the second computing device;
receiving a second connection request from the second computing device to the pool;
responding to the second connection request by sending a second job to the second computing device;
waiting for the second computing device to execute the second job and respond with a second solution;
receiving the second solution in unsigned form from the second computing device to the pool; and
granting a reduced reward from the pool to the second computing device if the unsigned second solution is verified and the pool is first to solve a blockchain block corresponding to the second solution.
6. The method of claim 5 , further comprising creating an SSL/TLS connection from the computing device to the pool.
7. The method of claim 5 , further comprising granting a reward to the computing device for signed solutions that are verified if the signature of the signed solution is verified and the pool is first to solve a current blockchain block.
8. The method of claim 7 , wherein the reward is proportional to the number of shares and share difficulty submitted by the computing device for the current blockchain block.
9. The method of claim 7 , wherein the reward is proportional to the number of shares and share difficulty submitted out of the last N verified shares received by the pool.
10. The method of claim 7 , further comprising:
receiving an unsigned third solution from a third computing device;
verifying the unsigned third solution; and
refraining from granting any reward to the third computing device for the unsigned third solution.
11. The method of claim 7 , further comprising:
receiving an unsigned third solution from a third computing device;
rejecting the unsigned third solution before performing any verification; and
refraining from granting any reward to the third computing device for the rejected unsigned third solution.
12. A method for operating a computing pool, the method comprising:
operating a computing pool management application on a server;
in response to receiving at the server a connection request from a computing device attempting to connect to the pool, responding by sending a job from the server to the computing device;
waiting for the computing device to execute the job and respond with a solution;
signing the solution on the computing device with a private key;
sending the signed solution from the computing device to the pool;
in response to receiving the solution to the job from the computing device, verifying the correctness of the solution;
verifying a signature of the solution with a public key;
allocating a share of any rewards the pool receives for the job to the computing device if the solution is correct and the signature is properly verified;
receiving a username and a password from a second computing device via a network to authenticate the second computing device;
receiving a second connection request from the second computing device to the pool;
responding to the second connection request by sending a second job from the server to the second computing device;
waiting for the second computing device to execute the second job and respond with a second solution;
receiving the second solution in unsigned form from the second computing device; and
granting a reduced share of the rewards the pool receives to the second computing device if the unsigned second solution is verified and the pool is first to solve a blockchain block corresponding to the second solution.
13. The method of claim 12 , further comprising:
not allocating any share of the rewards the pool receives in response to solutions without verified signatures.
14. The method of claim 12 , further comprising:
allocating a reduced share of the rewards the pool receives in response to valid solutions without verified signatures.
15. The method of claim 5 , wherein verifying the signature includes comparing the private key to the public key.
16. The method of claim 15 , wherein verifying the signature includes:
determining that the signature is valid when the private key matches or corresponds to the public key; and
determining that the signature is invalid when the private key does not match or correspond to the public key.
17. The method of claim 5 , wherein verifying the signature includes:
looking up the public key of the computing device on a data store or network; and
comparing the private key to the public key.