TezBridge

TezBridge is a web wallet that does not require any installation and acts as a connector between a decentralized application (DApp) and Tezos. Its main purpose is twofold:

  1. holding your secret key(s)
  2. signing off transactions with 1. or a hardware wallet

Whenever you want to do a operation, you need to have access to your key-pair. TezBridge has a built in wallet manager that does that for you. It encrypts the secret key with a password and stores it in your browser's storage. You either use TezBridge to create a secret key or to import an existing key. It supports various signing schemes and all 3 address types. Different keys are managed in separate managers. We can think of managers as "sub" wallets. It is also possible to use a USB-connected hardware wallet (Ledger) instead of a local manager.

graph TD node subgraph "Client (Web Browser)" dApp-->|prepares|transaction["(write) transaction"] tezbridge["TezBridge"]-->|signs|transaction end subgraph "Server (blockchain)" tezbridge-->|announces <br>through RPC|node["Tezos Node"] end
## How to sign a transaction with TezBridge

Every time the DApp initiates a "write" transaction to the blockchain, it requests TezBridge to sign the transaction. It triggers a popup window with TezBridge opened and the user first needs to choose the signer.

Below is an example where a local wallet manager named "Alice" is chosen as signer.

After doing so all DApp requests are shown. The 3 options are to Test, Approve or Reject.

Configuring a local RPC node

  1. Navigate to https://www.tezbridge.com

  2. Click on the current RPC node address

  3. Enter your local sandbox' address http://localhost:8732

How to import Alice' and Bob's account

  1. Locate accounts.js
alice: {
pkh: "tz1VSUr8wwNhLAzempoch5d6hLRiTh8Cjcjb",
sk: "edsk3QoqBuvdamxouPhin7swCvkQNgq4jP5KZPbwWNnwdZpSpJiEbq",
pk: "edpkvGfYw3LyB1UcCahKQk4rF2tvbMUk8GFiTuMjL75uGXrpvKXhjn"
},
bob: {
pkh: "tz1aSkwEot3L2kmUvcoxzjMomb9mvBNuzFK6",
sk: "edsk3RFfvaFaxbHx8BMtEW1rKQcPtDML3LXjNqMNLCzC3wLC1bWbAt",
pk: "edpkurPsQ8eUApnLUJ9ZPDvu98E8VNj4KtJa1aZr16Cr5ow5VHKnz4"
}

  1. Navigate to https://www.tezbridge.com

  2. Import Alice' secret key

    (a) Click on Import Key

    (b) Paste secret key edsk3QoqBuvdamxouPhin7swCvkQNgq4jP5KZPbwWNnwdZpSpJiEbq

    (c) Verify that the address is the same as you would expect

    (d) Give the wallet manager a name

    (e) Enter a locking password to securely encrypt the secret key in your browser's storage

    (f) Click on confirm

Importing a faucet.json

To perform transactions on the testnet Carthage, you need to have a XTZ or tezzies in your account. Luckily, there is a so called faucet that gives out tezzies for free.

Get your preloaded account from the faucet

  1. Visit https://faucet.tzalpha.net
  2. Confirm that you are not a robot
  3. Click on button
  1. Copy JSON

Import your faucet account in TezBridge

  1. Navigate to https://www.tezbridge.com

  2. Make sure that you have an RPC node selected that is connected to the testnet Carthage, eg. https://carthagenet.tezos.org.ua.

  1. Import faucet.json

    (a) Click on Import Key

    (b) Paste faucet.json that you have copied earlier

    (c) Verify that the address is the same as you would expect

    (d) Give the wallet manager a name

    (e) Enter a locking password to securely encrypt the secret key in your browser's storage

    (f) Click on confirm

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