Corda with Besu

We will demonstrate asset exchange of an AliceERC721 NFT in Besu network1 with 10 tokens on Corda_Network. For Besu commands, run from weaver/weaver/samples/besu/besu-cli folder, and for Corda commands, run from samples/corda/corda-simple-application folder, in your clone of the Cacti repository. Here Alice with account 1 and Bob with account 2 in Besu network1 correspond to PartyA (CORDA_PORT=10006) and PartyB (CORDA_PORT=10009) in Corda_Network respectively. Following are the step-by-step asset exchange process:

1. From corda client, generate secret-hash pair using following command (prints hash in base64):

   ./clients/build/install/clients/bin/clients utils hash --hash-fn=SHA256 -s secrettext
   

2. Run the following to verify the status of the tokens owned by PartyA and PartyB in the Corda_Network and Corda_Network2:

   ./scripts/getAssetStatus.sh 2
   

3. Run the following in besu-cli, to verify the status of the assets owned by Alice and Bob in the Besu networks:

   ./bin/besu-cli asset get-balance --network=network1 --account=1
   ./bin/besu-cli asset get-balance --network=network1 --account=2
   

4. Complete the asset exchange using following steps:

   • Run the following to trigger alice locking AliceERC721 token with id 0 for bob in network1 for 1 hour

     ./bin/besu-cli asset lock --network=network1 --sender_account=1 --recipient_account=2 --token_id=0 --asset_type=ERC721 --timeout=3600 --hash_base64=ivHErp1x4bJDKuRo6L5bApO/DdoyD/dG0mAZrzLZEIs=
     

     Note the contract-id printed as output in above command. The output line containing contract-id (text in base64 after Lock contract ID:) would like this:

     Lock contract ID: 48f59da2ac632117bf79b4aa986f5ece8a2439dc143d576965c17bc8275b0925
     

   • Run the following to verify alice's lock, replacing <contract-id> with actual contract-id:

     ./bin/besu-cli asset is-locked --network=network1 --lock_contract_id=<contract-id>
     

   • Run the following to trigger PartyB locking 50 units of token type t1 for PartyA in Corda_Network for 30 mins:

     CORDA_PORT=10009 ./clients/build/install/clients/bin/clients lock-asset --fungible --hashBase64=ivHErp1x4bJDKuRo6L5bApO/DdoyD/dG0mAZrzLZEIs= --timeout=1800 --recipient="O=PartyA,L=London,C=GB" --param=t1:50
     

     Note the contract-id displayed after successful execution of the command, will be used in next steps. The output containing contract-id would like this:

     HTLC Lock State created with contract ID Right(b=10448674_80d2bee7-5a5d-45df-b14e-60bac4ba1bf3).
     

     contract-id is the alphanumeric text (with underscore and hyphens) after b= within parenthesis. Let's refer it <contract-id-2> for this demonstration.
   • Run the following to verify PartyB's lock (can be verified by both parties):

     CORDA_PORT=10006 ./clients/build/install/clients/bin/clients is-asset-locked --contract-id=<contract-id-2>
     

   • Run the following to trigger PartyA's claim for 50 units of token type t1 locked by PartyB in Corda_Network:

     CORDA_PORT=10006 ./clients/build/install/clients/bin/clients claim-asset --secret=secrettext --contract-id=<contract-id-2>
     

     PartyB can see its node's logs to get the revealed hash preimage, and use it to claim in the Besu network.
   • Run the following to trigger bob's claim for AliceERC721 NFT with id 0 locked by alice in network1:

     ./bin/besu-cli asset claim --network=network1 --recipient_account=2 --preimage=secrettext --token_id=0 --lock_contract_id=<contract-id>
     

   The above steps complete a successful asset exchange between two Besu networks. In addition to the above commands, following commands can be run if specified timeout has expired and the locked asset remains unclaimed. - If alice wants to unlock the asset, run the following to trigger alice's re-claim for AliceERC721 NFT with id 0 locked in network1:

   ./bin/besu-cli asset unlock --network=network1 --lock_contract_id=<contract-id> --sender_account=1 --token_id=0
   

   - If PartyB wants to unlock the token asset, run the following to trigger unlock for t1:50 locked in Corda_Network:

   CORDA_PORT=10009 ./clients/build/install/clients/bin/clients unlock-asset --contract-id=<contract-id>
   

   5. Run the following to verify the status of the tokens owned by PartyA and PartyB in the Corda_Network and Corda_Network2:

   ./scripts/getAssetStatus.sh 2
   

   6. Run the following in besu-cli, to verify the status of the assets owned by Alice and Bob in the Besu networks:

   ./bin/besu-cli asset get-balance --network=network1 --account=1
   ./bin/besu-cli asset get-balance --network=network1 --account=2