---
title: "media.upload-part@1 · OpenVibe.Services"
canonical: "https://openvibe.services/docs/contracts/media.upload-part"
updated: null
---

# media.upload-part@1 · OpenVibe.Services

HTML: [media.upload-part@1 · OpenVibe.Services](https://openvibe.services/docs/contracts/media.upload-part)

# MediaUploadPart `media.upload-part@1`

Generated at 2026-11-13 06:25:48 UTC from [`openvibe-contracts v0.419.0`](https://github.com/OpenVibers/OpenVibe.Contracts/tree/v0.419.0) and [`openvibe-sdk v0.161.0`](https://github.com/OpenVibers/OpenVibe.SDK/tree/v0.161.0).

- Version: 1.0.0
- Owner: media
- Visibility: public
- Status: active
- Compatibility: backward
- Schema: [`https://openvibe.network/contracts/media/upload-part.v1.json`](/docs/contracts/media.upload-part.json)

A verified part received by Media. PUT the raw bytes to the presigned URL; X-Content-SHA256 is optional.

## Fields

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| `part_number` | integer | yes |  | - `minimum 1` |
| `size_bytes` | integer | yes |  | - `minimum 1` |
| `sha256` | string | yes |  | - `pattern ^[a-f0-9]{64}$` |

## Examples

From the contract's own test fixtures: valid ones validate, rejected ones must fail.

 Valid: basic

~~~~
{
  "part_number": 1,
  "size_bytes": 8388608,
  "sha256": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
}
~~~~

Rejected: basic

~~~~
{
  "part_number": 0,
  "size_bytes": 0,
  "sha256": "bad"
}
~~~~

## Validate

~~~~
const contracts = require('openvibe-contracts');
contracts.validate('media.upload-part@1', value);   // { valid, errors: [{ path, message }] }
~~~~