mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-23 07:58:09 +00:00
107 lines
4.7 KiB
Markdown
107 lines
4.7 KiB
Markdown
# Coin and FIDO Definitions
|
|
|
|
This directory hosts JSON definitions of recognized coins, tokens, and FIDO/U2F apps.
|
|
|
|
## FIDO
|
|
|
|
The [`fido/`](fido) subdirectory contains definitons of apps whose logos and
|
|
names are shown on Trezor T screen for FIDO/U2F authentication.
|
|
|
|
Each app must have a single JSON file in the `fido/` subdirectory. Every app must have
|
|
its `label` set to the user-recognizable application name. The `u2f` field is a list of
|
|
U2F origin hashes, and the `webauthn` field is a list of FIDO2/WebAuthn hostnames for
|
|
the app. At least one must be present.
|
|
|
|
Each app can have an icon. If present, it must be a 128x128 pixels RGBA PNG of the same
|
|
name as the corresponding JSON name. If the app does not have an icon, it must instead
|
|
have a field `no_icon` set to `true` in the JSON.
|
|
|
|
## Coins
|
|
|
|
We currently recognize five categories of coins.
|
|
|
|
#### `bitcoin`
|
|
|
|
The [`bitcoin/`](bitcoin) subdirectory contains definitions for Bitcoin and altcoins
|
|
based on Bitcoin code.
|
|
|
|
Each Bitcoin-like coin must have a single JSON file in the `bitcoin/` subdirectory,
|
|
and a corresponding PNG image with the same name. The PNG must be 96x96 pixels and
|
|
the picture must be a circle suitable for displaying on Trezor T.
|
|
|
|
Testnet is considered a separate coin, so it must have its own JSON and icon.
|
|
|
|
We will not support coins that have `address_type` 0, i.e., same as Bitcoin.
|
|
|
|
#### `eth` and `erc20`
|
|
|
|
Definitions for Ethereum chains (networks) and tokens (erc20) are split in two parts:
|
|
|
|
1. built-in definitions - some of the chain and token definitions are built into the firmware
|
|
image. List of built-in chains is stored in [`ethereum/networks.json`](ethereum/networks.json)
|
|
and tokens in [`ethereum/tokens.json`](ethereum/tokens.json).
|
|
2. external definitions - dynamically generated from multiple sources. Whole process is
|
|
described in separate
|
|
[document](https://docs.trezor.io/trezor-firmware/common/ethereum-definitions.html).
|
|
|
|
We generally do not accept updates to the built-in definitions. Instead, make sure your
|
|
network or token is included in the external definitions. A good place to start is the
|
|
[`ethereum-lists` GitHub organization](https://gitub.com/ethereum-lists): add your token
|
|
to the [tokens](https://github.com/ethereum-lists/tokens) repository, or your EVM chain to the
|
|
[chains](https://github.com/ethereum-lists/chains) repository.
|
|
|
|
#### `nem`
|
|
|
|
The file [`nem/nem_mosaics.json`](nem/nem_mosaics.json) describes NEM mosaics.
|
|
|
|
#### `misc`
|
|
|
|
Supported coins that are not derived from Bitcoin, Ethereum or NEM are currently grouped
|
|
and listed in separate file [`misc/misc.json`](misc/misc.json). Each coin must also have
|
|
an icon in `misc/<short>.png`, where `short` is lowercased `shortcut` field from the JSON.
|
|
|
|
### Keys
|
|
|
|
Throughout the system, coins are identified by a _key_ - a colon-separated string
|
|
generated from the coin's type and shortcut:
|
|
|
|
* for Bitcoin-likes, key is `bitcoin:<shortcut>`
|
|
* for Ethereum networks, key is `eth:<shortcut>:<chain_id>`
|
|
* for ERC20 tokens, key is `erc20:<chain_symbol>:<token_shortcut>`
|
|
* for NEM mosaic, key is `nem:<shortcut>`
|
|
* for others, key is `misc:<shortcut>`
|
|
|
|
If a token shortcut has a suffix, such as `CAT (BlockCat)`, the whole thing is part
|
|
of the key (so the key is `erc20:eth:CAT (BlockCat)`).
|
|
|
|
Duplicate keys are not allowed and coins that would result in duplicate keys cannot be
|
|
added to the dataset.
|
|
|
|
|
|
# Support Information
|
|
|
|
We keep track of support status of each built-in coin over our devices. That is `T1B1`
|
|
for Trezor One, `T2T1` for Trezor T, `T2B1` and `T3B1` for Trezor Safe 3 (both models
|
|
should have identical entries, except for minimum versions which are higher on `T3B1`),
|
|
`T3T1` for Trezor Safe 5.
|
|
|
|
This information is stored in [`support.json`](support.json).
|
|
External contributors should not touch this file unless asked to.
|
|
|
|
Each coin on each device can be in one of four support states:
|
|
|
|
* **supported** explicitly: coin's key is listed in the device's `supported`
|
|
dictionary. If it's a Trezor device, it contains the firmware version from which
|
|
it is supported. For connect and suite, the value is simply `true`.
|
|
* **unsupported** explicitly: coin's key is listed in the device's `unsupported`
|
|
dictionary. The value is a string with reason for not supporting.
|
|
For connect and suite, if the key is not listed at all, it is also considered unsupported.
|
|
ERC20 tokens detected as duplicates are also considered unsupported.
|
|
* **unknown**: coin's key is not listed at all.
|
|
|
|
_Supported_ coins are used in code generation (i.e., included in built firmware).
|
|
_Unsupported_ and _unknown_ coins are excluded from code generation.
|
|
|
|
You can edit `support.json` manually, but it is usually better to use the `support.py` tool.
|
|
See [tools docs](../tools) for details.
|