Improved Metadata API

Last month we started providing metadata for Jettons and NFTs in the V3 API.

We are pleased to report a number of improvements:

— The metadata now enters the API in advance as soon as the token appears on the network. In the previous implementation, the metadata was indexed the first time the token was requested.

— Images and JSON are now proxied via toncenter.com. 3 image sizes are available, as well as original non-proxied urls for JSON and images. IPFS is supported.
Using a proxy increases security (you don't make requests to third-party hosting) and speed of downloading resources.