Protocol Discussion​

In this protocol meeting we had two CAPs to discuss and that was CAP-81 and CAP-82.

CAP-81: This CAP introduces a simpler and more efficient eviction scan process. Instead of scanning the BucketList, the new eviction scan just uses in-memory Soroban state. This simplifies the logic while reducing disk reads and speeding up eviction speed.

CAP-82: This CAP adds checked variants of the existing 256-bit integer arithmetic host functions. Unlike the existing functions which trap on overflow, the checked variants return Void on overflow, allowing contracts to handle arithmetic errors gracefully.

Read more about the proposals here:

CAP-0081 - Discussion

CAP-0082 - Discussion

Protocol Discussion​

We have one new CAP to discuss and that is CAP-80. This proposal adds BN254 Multi-Scalar Multiplication and modular arithmetic used in a variety of ZK proof applications. Adding host support for these will greatly improve the performance of these use cases.

We also follow up on a previous CAP - the CAP-73.

Read more about the proposal here:

CAP-0080 - Discussion

CAP-0073 - Discussion

OpenZeppelin Q4 Releases​

In this year’s first Stellar Developer Meeting, on Thursday, January 22nd at 8am PT on Twitch, we will catch up with Ozgun and Boyan from the OpenZeppelin team and take a look at the libraries released in Q4 last year.

Protocol Discussion​

We had three CAPs prepared for this meeting. CAP-77 will provide a way to make ledger keys inaccessible based on the network configuration upgrade performed with a validator vote. CAP-78 proposes an interface which allows developers to specify TTL extension policies such as 'if an entry TTL is less than 29 days, extend it to have 30 days TTL'. CAP-79 introduces host functions for converting Stellar strkey format strings to/from Address/MuxedAddress objects.

Read more about the proposals here:

CAP-0077 - Discussion

CAP-0078 - Discussion

CAP-0079 - Discussion

In this meeting we do a walkthrough of OpenZeppelin’s Q3 library releases for Smart Account, Vault and RWA.

Links to docs:

• Smart Account: https://docs.openzeppelin.com/stellar-contracts/accounts/smart-account
• Vault: https://docs.openzeppelin.com/stellar-contracts/tokens/vault/vault
• RWA: https://docs.openzeppelin.com/stellar-contracts/tokens/rwa/rwa

In this meeting we are continuing our mini series about the Stellar-based open source tooling OpenZeppelin is developing. In the last session we talked briefly about Relayer and this time we are diving deeper into this tool, and OpenZeppelin Managed Service.

OpenZeppelin Relayer: https://docs.openzeppelin.com/relayer

In this meeting we are talking to Dobprotocol to learn more about how they use Stellar to build a unique platform, turning machines into investable assets.

Website: https://www.dobprotocol.com

Protocol Discussion​

In this call the recent state archival issue, introduced by Whisk (Protocol 23), is discussed. Questions from community builders are also answered.

OpenZeppelin UI Builder demo​

We are meeting with the OpenZeppelin team again to catch up on the latest developer tooling work they are doing.

This time Steve will demo UI Builder, an easy way to spin up a front-end for any contract call in seconds. UI Builder allows you to select a function and then it auto-generates a React UI with wallet connect and multi-network support, and exports a complete app.

OpenZeppelin UI Builder

Protocol Discussion​

In this Core Advancement Proposal discussion CAP-0075 (Host functions for enabling Poseidon and Poseidon2 hash functions) is presented.

This CAP proposes adding host functions for cryptographic primitives enabling Poseidon family of hash functions, which are widely-adopted hash choices in efficient zero-knowledge proof systems. Supporting these as host functions in Soroban can facilitate adoption of ZK applications and interoperability with other ecosystems.

Link to CAP-0075

In this meeting we will discuss CAP-74, BN254 and Poseidon hash functions.

CAP-0074 - Discussion

In this week’s Stellar Developer Meeting we discuss new Core Advancement Proposals.

Here are some resources to read up on:

CAP-0071 - Discussion

CAP-0072 - Discussion

CAP-0073 - Discussion

In this meeting we talk to Flashback founder Brieuc Berruet, who participated in the DraperU x Stellar incubator program last year, to get an update on his project (spoiler alert - it's live!).

Learn more about the project, and see a cool demo!

Flashback Website

In this meeting we are talking to Esteban and Francisco from PaltaLabs. Stellar Hacks is currently running a hackathon in collaboration with PaltaLabs, where the goal is to build using their projects Soroswap and DeFindex.

Let's see how the hackathon is going, and some advice if you are still considering entering, there's still time to enter!

Links:

• Hackathon
• Soroswap
• DeFindex

In this meeting the Nomyx team will give us an introduction to their advanced smart contract architecture (an implementation of the Diamond Pattern) and the Nomyx Diamond proxy viewer interface, that facilitates inspection of deployed diamonds and makes them a bit easier to work with.

They will also be showcasing a live deployment instance of the diamond proxy standard currently used for the Nomyx platform which removes limitations related to the upper contract size limit, allowing developers to launch complex products.

Nomyx Website

In this call we are getting an update on the exciting Scaffold Stellar project by Fifo from Aha Labs.

Scaffold Stellar is a great way to fast-track new projects built on Stellar. It has starter smart contracts, frontend, plugins and tooling built-in.

Scaffold Stellar Repo

At this Stellar Developer Meeting we are having a chat with Bram Hoogenkamp from OpenZeppelin about the OpenZeppelin Monitor - providing monitoring and alerting for smart contracts.

We are close to completing the implementation of Whisk, Protocol 23 CAPs, the next step in the CAP lifecycle is voting by the Core CAP team. In this protocol meeting an update was provided on the CAPs and any final questions from the community was answered.

Read up on the CAPs here:

CAP-0062 - Discussion

CAP-0063 - Discussion

CAP-0065 - Discussion

CAP-0066 - Discussion

CAP-0067 - Discussion

CAP-0068 - Discussion

CAP-0069 - Discussion

CAP-0070 - Discussion

This week we’ll dive into one of the most overlooked tools - Quickstart.

Quickstart is a local Stellar network environment (node) that allows developers to run a local version of the Stellar network for development and testing.

Learn about Quickstart, see how to install it and how to deploy the Hello World sample dapp on Quickstart.

Link:

• Stellar Quickstart

Pamphile (better know as tupui) is a senior software engineer working at Bitpanda. Previously he worked in the team who brought Flight Simulator 2020, and he created a consulting company to work on open source software.

Now he is building his project named Tansu on the Stellar blockchain. Tansu is a decentralized system which aims to secure the software supply chain and break siloed communities by using a DAO.

Link:

• Tansu

First we take a look at look at Stellar Lab, a lot of features and improvements have been added since we did a Stellar Lab presentation last year. Stellar Lab is a powerful tool for everyone developing on Stellar.

We are looking for community feedback on the Upgradeable Contracts SEP, and will present the details of this proposal.

Links:

• Stellar Lab

• Upgradeable Contracts SEP

We are meeting with the OpenZeppelin team again to catch up on the latest feature additions, and this time we have invited two of their engineers, Boyan Barakov and Ozgun Ozerk, to answer technical questions from the audience.

Links:

• OpenZeppelin Contract Wizard

• OpenZeppelin Stellar Contracts

• Dev Walkthrough

Part 2​

This is a short protocol meeting, following up on previous discussions.