48 posts tagged with "developer"

In this week's call we talk to Alberto Chaves from Trustless Work about building an escrow service on Stellar, followed by a quick introduction to using AI-based tools to develop Soroban smart contracts.

Agenda: Discord thread

At this week’s developer meeting, Jeesun demonstrated the new Stellar Lab, showcasing its enhanced features designed to improve the developer experience.

The tech stack of the new Stellar Lab was discussed in the meeting, and the following demos were used to show the Lab's functionality:

1. Enable MultiSig Exercise
2. Stellar Wallets Kit
3. Create & Fund Account
4. Save KeyPairs Feature
5. Save Transactions Feature
6. XDR to JSON mapping
7. RPC Methods - including simulateTransaction

Agenda: Discord thread

SDF’s Platform team had an internal hackathon last week, with the purpose of building applications utilizing the Composable Data Platform (CDP). In this week’s developer meeting some of the team members present their projects. The apps are widely varied (trading app, fraud detection, JS browser-based ingester, etc) but the intent here is to show how easy CDP is to use.

Projects presented in the meeting:

1. Trade Aggregations Service
2. Deceptiscan - CDP fraud detection
3. Composable Data Platform Hackies - data indexer, payment indexer, contract expiration alerter, data indexes in DuckDB, torrents for data indexes and ledger metadata)
4. Data ingest with frontend JS
5. Real-time analytics

Agenda: Discord thread

Summary: Hoops Finance, a DeFi protocol, discussed their platform they are building. https://www.hoops.finance/

1. They abstract away the complexity of DeFi investments for normal users through a series of guided prompts.
2. Provides simplified access to LP liquidity provisioning abstraction
3. Public AMM API for read/write data on AMMs on Stellar
4. Hoops Finance API: https://api.v1.xlm.services/#overview

Agenda: Discord thread

SDF DevRel team member Carsten Jacobsen showed how to build a simple Hello World dapp based on a Soroban smart contract and Next.js through these steps:

1. Create the default Hello World smart contract using the Stellar CLI
2. Create TypeScript bindings (package) using the Stellar CLI
3. Create the default Next.js using the npx create-next-app command
4. Add and link the TypeScript binding package to the Next.js project
5. Create a simple frontend with a form to submit a string
6. Import the package in the Next.js page, and setup a client
7. Create submit-function to send form value to the smart contract
8. Use useState to store the smart contract response and display it

Agenda: Discord thread

Developer Experience team member Nando Vieira introduced the CLI features alias and snapshot:

1. Alias
   1. Install of Hello World example for showcasing alias
   2. Showed examples of how contract IDs are often passed as parameters in CLI commands like invoke (copying ID string or command substitution)
   3. How to deploy a smart contract and create an alias
   4. How to invoke the smart contract with the alias
2. Snapshot
   1. How to create a ledger snapshop
   2. How to use the snapshot in a test case

Towards the end Nando went through the developer documentation, with focus on the added command line examples for Windows users, and a useful cookbook for CLI commands.

Agenda: Discord thread

Platform team demonstrated Galexie, a part of CDP(Composable Data Platform):

1. Galexie
   1. Data Extraction: Extracts raw ledger data from the Stellar network
   2. Compression: Compresses raw data for efficient storage
   3. Storage Options: Supports runtime configuration through the Datastore abstraction to use various physical storage layers, starting with Google Cloud Storage (GCS)
   4. Modes of Operation: Can operate in either batch mode or streaming mode
2. Composable Data Platform
   1. Flexible Datastore: Multiple options for physical data storage layers
   2. Galexie: Used to extract, compress and export data to your chosen Datastore
   3. Transform: Structure data in a model suitable to your application
3. Pluggable Data Pipelines
   1. Workflows: Create ETL(extract, transform, load) pipelines
   2. Streaming: Fast, lightweight streaming data

1. @Soiled and @Robeart from Orbit spoke about using Blend to create decentralized stablecoins for all currencies under the Orbit Protocol, utilizing a decentralized pegkeeper to maintain their price, and leveraging these stablecoins and smart wallets to create an orderbook less perpetual exchange, bringing Forex to Stellar

2.Link to the presentation

Note: The hosts microphone audio is not in the video so there is some silence during Q/A. Here are the question asked during the Q/A:

1. (From ! markus_0) why do you always have an infinite amount of tokens in the pool? Wouldn't it be safer to start small and mint more as demand opens up 2.(From HunterIonize) What purpose does this serve exactly? Sorry to be blunt
2. How do you see the Orbit Protocol contributing to financial inclusion on a global scale, particularly in underbanked regions? What challenges do you anticipate in achieving this?
3. In 5-10 years, how do you see the landscape of Forex on blockchain evolving? What role do you believe Stellar will play in this evolution, and how will Blend and Orbit Protocol be at the forefront?
4. Are there any asks of the developer community?

1. Tdep discussed Zephyr, an execution env built on top of the indexer Mercury. He also walked through examples demonstrating how Zephyr can simplify dapp development.

1. Piyal demonstrated that Freighter's swap functionality is now served by Soroswap. It was previously served by Stellar Dex.
2. Freighter has made integration instructions available here.
3. Esteban shared that Palta Labs has created a DEX aggregator and made it available to all via the Router SDK.
4. The Router SDK finds the optimal path for the swap in terms of swap cost across all dexes on Soroban.

Note: the first part of the call was lost. The video posted above captures the second half of the call where various ecosystem developers shared their use cases and needs for a smart wallet on Stellar.

1. Tyler put forward a proposal for a smart wallet as a public good. Given that the native auth can be overloaded by using __check_auth, Stellar implementation of a smart wallet is fairly straightforward. The capability to customize the auth is already built into the core protocol.
2. See the proposal here and implementation here
3. The proposal only uses WebAuthN-based signers i.e. passkeys. It does not use ed25519, which, perhaps it should given that ~100% of the accounts on Stellar use the scheme. It also introduces the notion of temporary and admin signers to illustrate the notion that the account can be managed by multiple signers, each with a different access policy.
4. The biggest unlock with custom auth is the ability to execute custom logic. We heard from various ecosystem members about how might they us it. 4a. A dev is building a perpetual protocol and thought smart wallets could be used to automatically manage defi positions, which would be a significant improvement over status quo where the user has to constantly track assets to determine when to execute a trade. 4b. Folks are excited about foregoing the seed phrase for passkeys, which is especially meaningful when onboarding net new users to the blockchain. 4c. Authorizing a cross-chain message from a different chain, especially programmatic authorization, requires an implementation of custom accounts. 4d. Some apps have noted that users prefer not to have a wallet but simply experience the value of the app, especially games. For this, the app may assign a temporary account to the user and control access via check_auth. 4c. Microtransactions without needing user sign is super interesting for apps as well.
5. This has been a very insightful meeting and we learnt about how the Stellar ecosystem plans to leverage smart wallet. Let's continue the conversation in discord!

1. SDF Data team gave a crash course in analysis of Stellar data, and covered how to access Hubble, tips for efficient querying, and how to get started with data exploration.
2. Slides are publicly available and legible async.
3. Tips for data anlaysis are also covered in docs
4. Share your queries and post questions in #hubble in Stellar discord, which is a dedicated channel for data-related topics.