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.

1 Answer 1


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.

  • Hi, How do i get the hashes that im supposed to pass in my proof parameter?
    – kd12345
    Jan 18, 2022 at 12:37
  • @kd12345 I think you should post a new question and describe what you've done. If you are looking for code, here is an example: ethereum.org/en/developers/tutorials/…
    – eth
    Jan 19, 2022 at 1:39

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