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Solana definitions
To allow nicer token presentation on the device, Trezor allows passing a token definition as part of the additional info. Currently only one token can be included in the definitions. Solana tokens are uniquely identified by their mint account. Trezor additionally expects a name and a ticker symbol.
In the future we might also include definitions for instructions.
Retrieving the definitions
A full list of Solana definitions is compiled from multiple sources and is available in a separate repository.
From this list, a collection of binary blobs is generated, signed, and made available online.
A given Trezor firmware will only accept signed definitions newer than a certain date, typically one month before firmware release. This means that a client application should either always fetch fresh definitions from the official URLs, or refresh its local copy frequently.
The base URL for the definitions is https://data.trezor.io/firmware/solana-definitions/.
Definition format
Look at ethereum-definitions.md's Definition Format section.