chore: add README.md

x/bundles/migration/README.md

@@ -0,0 +1,33 @@
+## Bundles Migration
+
+This migration is used to update the bundle summaries by adding the created Merkle roots that are
+required by the [Trustless API](https://docs.kyve.network/access-data-sets/trustless-api/overview).
+To create the correct Merkle proofs for the archived bundles, an approach was used that downloads
+the bundle and computes the correct Merkle proof. To validate the correct proof calculation, it was
+implemented in [Go and Python](https://github.com/KYVENetwork/merkle-script) , whereas it was tested with the TypeScript runtime implementation.
+
+These scripts created the `files/merkle_roots_pool_X` binary files, that are used for the v2 migration.
+Both Python and Go implementations were used to compute the hashes, which provide identical results:
+
+```
+merkle_roots_pool_0
+da4bb9bf0a60c5c79e399d8bb54ae4cf916f6c1dbdd5cdae45cb991f4e56158f
+
+merkle_roots_pool_1
+3c4eeb915cd01c6adea3241ea3536dfce5cec87017557b7e43d92c6ceec3096e  
+
+merkle_roots_pool_2
+754eb4680fe550cd3a7277ab0fc12c8f7ce794d18ca71d247561e40b05629c39  
+
+merkle_roots_pool_3
+df26b886928dbec03e84eca9b41c02b15ae7c5e7cf39ab540fcf381d3e1d27cc  
+
+merkle_roots_pool_5
+051efd6e44d7ac5bca41abb20aaf79d34dd095b5d6797d536bf13face7e397f9  
+
+merkle_roots_pool_7
+303d5ccaa18cc9e23298d599e3ba4c5bcf46f44d0fb5dd2cfdebcd02dcd8dc95 
+
+merkle_roots_pool_9
+e2f1c174350e5925d3f61b7adfb077f38507aec1562900b79c645099809ae617 
+```