Referencing documents using multiple blockchains
Embodiments provide systems and methods for referencing documents using block chains. A computer-implemented method, for example, includes receiving a hash of a document, storing the hash of the document in a block of a protected block chain, generating a unique identifier for the block of the protected block chain and storing the unique identifier in a public block chain.
1 . A method for referencing documents using block chains, comprising:
receiving a hash of a document;
storing the hash of the document in a block of a protected block chain;
generating a unique identifier for the block of the protected block chain; and
storing the unique identifier in a public block chain, wherein the unique identifier is stored in the public block chain after a private contract is executed among users to obtain a consensus on a content action.
2 . The method of claim 1 , further comprising:
validating the document, comprising:
retrieving the unique identifier from the block of the protected block chain based on the hash of the document;
determining whether the unique identifier is stored in the public block chain; and
when the unique identifier is determined to be stored in the public block chain, determining that the document is valid.
3 . The method of claim 2 , further comprising:
when the unique identifier is determined not to be stored in the public block chain, determining that the document is invalid.
4 . The method of claim 2 , wherein the unique identifier is stored in a block of the public block chain, validating the document further comprising:
retrieving a block index for the block of the protected block chain;
retrieving a block index for the block of the public block chain; and
determining that the document is valid further based on a comparison of the block index for the block of the protected block chain and the block index for the block of the public block chain.
5 . The method of claim 2 , wherein validating the document further comprises:
retrieving a number of blocks in the protected block chain;
retrieving a number of blocks in the public block chain; and
determining that the document is valid further based on a comparison of the number of blocks in the protected block chain and the number of blocks in the public block chain.
6 . The method of claim 2 , wherein the block of the protected block chain comprises a plurality of protected blocks and the public block chain comprises a plurality of public blocks, validating the document further comprising:
traversing the protected block chain and the public block chain to determine whether the unique identifier of each protected block is stored in a corresponding public block.
7 . The method of claim 2 , wherein the hash of the document is received from a document management system, further comprising:
returning a result that the document is valid to the document management system.
8 . The method of claim 7 , wherein receiving the hash of the document is in response to a first user of the document management system accessing the document.
9 . The method of claim 8 , wherein validating of the document is in response to a second user of the document management system accessing the document, wherein the first and the second user do not have access to the protected block chain.
10 . The method of claim 1 , wherein metadata is associated with the document, and wherein the method further comprises:
storing the metadata associated with the document in the block of the protected block chain; and
retrieving the metadata associated with the document from the block in the protected block chain based on the hash of the document.
11 . A system for referencing documents using block chains, comprising: a processor; and
a non-transitory memory coupled to the processor and comprising instructions executable by the processor for:
receiving a hash of a document;
storing the hash of the document in a block of a protected block chain;
generating a unique identifier for the block of the protected block chain; and
storing the unique identifier in a public block chain, wherein the unique identifier is stored in the public block chain after a private contract is executed among users to obtain a consensus on a content action.
12 . The system of claim 11 , the instructions further executable by the processor for:
validating the document, comprising:
retrieving the unique identifier from the block of the protected block chain based on the hash of the document;
determining whether the unique identifier is stored in the public block chain; and
when the unique identifier is determined to be stored in the public block chain, determining that the document is valid.
13 . The system of claim 12 , the instructions further executable by the processor for:
when the unique identifier is determined not to be stored in the public block chain, determining that the document is invalid.
14 . The system of claim 12 , wherein the unique identifier is stored in a block of the public block chain, validating the document further comprising:
retrieving a block index for the block of the protected block chain;
retrieving a block index for the block of the public block chain; and
determining that the document is valid further based on a comparison of the block index for the block of the protected block chain and the block index for the block of the public block chain.
15 . The system of claim 12 , wherein validating the document further comprises:
retrieving a number of blocks in the protected block chain;
retrieving a number of blocks in the public block chain; and
determining that the document is valid further based on a comparison of the number of blocks in the protected block chain and the number of blocks in the public block chain.
16 . The system of claim 12 , wherein the block of the protected block chain comprises a plurality of protected blocks and the public block chain comprises a plurality of public blocks, validating the document further comprising:
traversing the protected block chain and the public block chain to determine whether the unique identifier of each protected block is stored in a corresponding public block.
17 . The system of claim 12 , wherein the hash of the document is received from a document management system, the instructions further executable by the processor for:
returning a result that the document is valid to the document management system.
18 . The system of claim 17 , wherein receiving the hash of the document is in response to a first user of the document management system accessing the document.
19 . The system of claim 18 , wherein validating of the document is in response to a second user of the document management system accessing the document, wherein the first and the second user do not have access to the protected block chain.
20 . The system of claim 11 , wherein metadata is associated with the document, the instructions further executable by the processor for:
storing the metadata associated with the document in the block of the protected block chain; and
retrieving the metadata associated with the document from the block in the protected block chain based on the hash of the document.
21 . The method of claim 1 , further comprising:
storing the unique identifier for the block of the protected block chain in the protected block chain.
22 . The system of claim 11 , wherein the instructions are further executable by the processor for:
storing the unique identifier for the block of the protected block chain in the protected block chain.