
Halborn
Halborn provides blockchain security services like penetration testing, smart contract audits, etc.

What is Halborn?
Halborn provides blockchain security solutions, including security advisory, advanced penetration testing, smart contract audits, and DevOps and automation services. Halborn was founded in 2019 by renowned ethical hacker Steven Walbroehl and growth hacker Rob Behnke. The company has now grown to over 100 of the world's best offensive security engineers.
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Developer resources from Alchemy

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A practical guide to permissioned vs. permissionless blockchains
Understand the differences between permissioned and permissionless chains and how to choose the right one.

Preparing for the Agave 2.0 Upgrade
A quick reference for the RPC endpoint deprecations coming in Solana's Agave v2.0 release and the replacement calls you should migrate to now.
Halborn alternatives
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