tronlink-android-core

TronLink Wallet is a decentralized non-custodial wallet.TronLink-Core is the core module of TronLink Wallet, which provides core functions such as Create Wallet, Get Address and Sign Transaction.

Analytics Module (Privacy-First Design)

The metrics module collects aggregated usage data only. Wallet addresses, keys, mnemonics, transaction hashes, counter-parties, and device identifiers are never transmitted. The backend receives only opaque UUIDs and same-day aggregated buckets; individual transactions are not reconstructible.

Address → UUID Anonymization

Each address is mapped to a random UUID stored locally only. The backend never sees the address, and the same user's two wallets appear as two independent UUIDs (no server-side linkage).

// UIDMapRepository.java — local-only address → uuid mapping
public synchronized String queryUIDByAddress(String address) {
    UIdMappingEntity entity = uidMappingDao.getByAddress(address);
    if (entity == null) {
        String uuid = newUID();              // UUID.randomUUID().toString()
        insert(address, uuid);                // persisted on-device only
        return uuid;
    }
    return entity.getUId();
}

What Is Uploaded

Records are merged locally per (uid, actionType, tokenAddress, day) before upload, and raw amounts are replaced with a 9-bucket logarithmic histogram (A1..A9).

Never collected, never transmitted:

• Wallet addresses , Public keys, Mnemonic phrases, Private keys.

• Transaction hashes , Contract call parameters.

• IP, device fingerprint, any identifier derived from the host browser.

Requirements

• Android 21+
• Java 1.8+

How to use

Add the JitPack maven repository.

maven { url "https://jitpack.io"  }

Add dependency.

implementation 'com.github.TronLink:tronlink-android-core:1.0.2@aar'

Integrity Check

tronlink-android-core.aar is signed by the gpg key as below. You can use the gpg public key to verify the integrity of the officially released core library.

pub: 7B910EA80207596075E6D7BA5D34F7A6550473BA
uid: build_tronlink <build@tronlink.org>

For example:

#gpg --verify tronlink-android-core-xxx.aar.asc tronlink-android-core-xxx.aar
gpg: Signature made 一  7/29 16:03:14 2024 CST
gpg:                using RSA key 7B910EA80207596075E6D7BA5D34F7A6550473BA
gpg: Good signature from "build_tronlink <build@tronlink.org>"

Demo

• Create new wallet
• Sign transaction
• Sign message