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State of CARv1 vs CARv2 for IPFS Gateway Car File Requests
I'm looking to understand the current status of CARv1 versus CARv2 when requesting a car file via an IPFS gateway for downstream implementations. Will the IPFS gateway implementations consistently return v1 encoded car files, or is there a possibility that v2 might be utilized instead? Any insights on the prevalence and support for CARv2 in IPFS gateway implementations would be greatly appreciated.
- IPFS
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1To specify the explicit version in the content type header, you can use the following format: Content-Type: application/vnd.ipld.car;version=1. This specification will be recognized by valid gateway implementations, as outlined in the documentation provided by IPFS: Trustless Gateway Specifications.
It is worth noting that utilizing version 2 on a trustless gateway may not be the most practical approach, as there is currently no cost-effective method to verify that the index has not been altered.
Regarding the format compatibility, it is possible to read a carv1 stream and simultaneously generate the v2 index incrementally. However, it is uncertain whether this functionality has been implemented in the car libraries.
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