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permanent-file-storage.md

File metadata and controls

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Store files and data immutably for the scenarios when it's not needed to create a dynamic Atomical Digital Object

Permanent File Storage

Example: Storing Immutable Image File on Chain

Using the command line utility, execute the following command to set the data for a sample image file. Use the store-file command line (dat operation on chain) to specify the path to the file and the on-chain filename ("image.png" is the desired target name in the example below)

// immutably store an image on-chain to reference in the container metadata
npm run cli store-file ./path/to/image.png image.png --satsbyte=10

Success sent tx:  db8a761ed493627138c5733071558c4caa65912c5cba3e1061c02d6d7933461f
{
  "success": true,
  "data": {
    "commitTxid": "b57bad8c0b7f58a552574fafc16b6efbbb3bf966b9ccfb24f03580f9462b5997",
    "revealTxid": "db8a761ed493627138c5733071558c4caa65912c5cba3e1061c02d6d7933461f",
    "dataId": "db8a761ed493627138c5733071558c4caa65912c5cba3e1061c02d6d7933461fi0"
  }
}

We will use the reveal location (db8a761ed493627138c5733071558c4caa65912c5cba3e1061c02d6d7933461fi0) to refer to the image image.png below.

Now that the file is on chain, use the recursion and references URN syntax to refer to the file.