Mind's Forge : Using Backblaze B2 with Urbit

Create bucket:

Public files, disable encryption, Object Lock: disabled

Create app key:

I had to allow access to "All" buckets for some reason. Read and Write

Install/download the B2 tool, on Arch it's yay backblaze-b2, an AUR package, the binary is backblaze-b2

run $ backblaze-b2 authorize-account <<keyID>> <<applicationKey>>

Make an executable file with this in it:

backblaze-b2 update-bucket --corsRules '[
  {
    "corsRuleName": "downloadFromAnyOriginWithUpload",
    "allowedOrigins": [
      "*"
    ],
    "allowedHeaders": [
      "*"
    ],
    "allowedOperations": [
      "s3_put"
    ],
    "maxAgeSeconds": 3600
  }
]' <<INSERT YOUR BUCKET NAME HERE>> allPublic

Execute that file, and fill out the settings in Landscape/EScape on Urbit:

Settings -> Remote Storage, Endpoint:Endpoint, Access Key ID:keyID, Secret Access Key:applicationKey

New Bucket -> human readable bucket name