I want to use the OpenZeppelin Merkle proof library, but I am not able to figure out the hashes I have to provide in the proof parameter in the verify function of the library.

Let's say I have these hashes as leaf nodes:

[ {hash: 'b21bf46774e26d1371efa237de5882f526119eecaa45dbf39c7818600e375e2d'}, {hash: '3da8c00fbec86f6ede0cca827e032dc7ebbe839dc80dc97b862df3d3aec8b78d'}, {hash: '5a9c997d4c2508b4e29870855eab0d80b39952d024c716505066d8705070947b'}, {hash: '8f4082b2891ad69b64b2c4753dae488d6666d4d7cfd34d87c67efb2b9fde8a3c'}, {hash: '815fdfa8e1af3674398bb50aa2023bc2eee26ad0effa73fbc6e8bfca6d0d3d32'}, {hash: '9d282b8f2019001b06c0f6ab08989dd39403459da38c8c56c908ac59c543989c'}, {hash: '9847b72c2efe0fc6d7bddcf948de2a8c87f12e25e09c66cf01168a904addf4c9'}, {hash: '2ff257c0d15996467140c11a3076bc56b4d85e32d93437608d6728a46b15045c'}, {hash: '664bbbb4b2835f058a4c618707cb2103b15a602aca55d00f764d546fd262e529'}, {hash: '039f9def43c7130659dbe112ab4ed877964b253cea54ece430c013154e1ed1ab'} ]

Then what all hashes I will have to provide in the proof parameter.


Using example https://blog.ethereum.org/2015/11/15/merkling-in-ethereum/

  • proof would be the yellow hashes.
  • root is 6c0a...
  • leaf is the green hash.

enter image description here

Of course if your leaf is different, the proof hashes will be different.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.