---
updatedAt: 2025-02-13T15:14:56.000Z
agentTools:
  projectIndex: https://vision.truepic.dev/llms.txt
---

# Lens API Changelog

Release history

Notable releases are listed here. See [Maintenance](#maintenance) for service release dates.

## September 26, 2024

* Added support for C2PA spec versions [1.4](https://c2pa.org/specifications/specifications/1.4/specs/C2PA_Specification.html) and [2.0](https://c2pa.org/specifications/specifications/2.0/specs/C2PA_Specification.html).
* Added support for `c2pa.hash.boxes` assertions.
* Added support for `GPSHPositioningError` value in metadata assertions.
* Added support for `c2pa.metadata` and `stds.metadata` assertions.

## December 1, 2023

* Added support for verifying m4a audio.

## May 15, 2023

* Added support for [C2PA spec version 1.3](https://c2pa.org/specifications/specifications/1.3/index.html).
* Updated EXIF assertion casing to match the [examples in the spec](https://c2pa.org/specifications/specifications/1.3/specs/C2PA_Specification.html#_exif_information).

## April 14, 2023

* Added support for optional location in the SDKs, ensuring media can still be considered valid when location is missing.

## January 20, 2023

* Added support for verifying media taken with the capture web library on tablets.

## November 14, 2022

* Added location comparison, a new feature that automatically compares a provided address from a [capture upload](https://vision.truepic.dev/reference/post_captures) to the GPS coordinates of a Truepic and returns in the [location object](https://vision.truepic.dev/reference/api-reference#location-object) whether or not it's a match within a specified threshold of meters.

## June 3, 2022

* Added the odometry sensor reading to the [assertions object](https://vision.truepic.dev/reference/api-reference#assertions-object).  The heading returns the direction (in degrees) that the camera was facing at time of capture.

## April 14, 2022

* Added [rate limiting](https://vision.truepic.dev/reference/getting-started#rate-limiting) and related error handling.

## Maintenance

Previous six months of maintenance releases with no new features or notable bug fixes.

* October 31, 2024
* October 9, 2024
* May 17, 2024
* May 8, 2024
* May 2, 2024