Blog Articles – Web3 Gated Content

This repository is the web3 component of my portfolio, it consists of the Blog which is ERC1155Upgradeable contract with 2 NFTs:

• A Free NFT for standard guides, articles, and tutorials. Developers can optionally donate to support the content.

• A Premium NFT for premium tutorials to unlock code access covering advanced technical topics with full test cases.

Logic Flowchart of Premium Tokens

• In Frontend:

  • Developer provides his GitHub handle which will be stored server-side in JSON.

  • Mints the premium tutorial of his choice on my portfolio's blog.

• In Blockchain:

  • Blog contract emits PremiumReceived(address indexed sender, string tokenURI) when mintPremium(string calldata uri) is invoked.

• Substreams

  • Decodes and indexes the event from blockchain and writes substream-sink-file to my backend containing: minter address, token uri, chain id, smart contract address, and tx hash.

• Backend (Access Orchestrator)

  • Listens to Substreams records, confirms finality, and authorizes the pair (minter address, tokenURI).

  • Maintains a minimal wallet → GitHub handle link (one-time).

  • For each authorized pair, it triggers the target repo’s GitHub Action to grant read access to that specific private repo.

• GitHub Actions

  • Each premium repo has a workflow that listens to repository_dispatch: grant_access and adds the GitHub user as a collaborator (read) to that one repo.

  • The user receives a GitHub invite; once accepted, they can open the private repo for that tutorial.

Flowchart from mint → GitHub invite.

Reasons for implementing this logic

1. Avoids on-chain updates of each premium token’s URI (URIs are passed once at mint and enforced off-chain).
2. Saves gas versus on-chain proofs, like Merkle tress while keeping per-address + per-URI control in simple JSON.
3. Automates per-tutorial GitHub access via GitHub Actions, by inviting the mapped GitHub handle to the specific private repository referenced by tokenURI.

Tools and Frameworks used

• Foundry
• Substreams from The Graph
• GitHub Actions
• Slither
• Slither GitHub
• Mythril
• Aderyn from Cyfrin
• Certora

Roadmap:

ERC-4337 (card/fiat → crypto) is on the roadmap.