Automated summary
Reference note on B² Network (BSquared), an EVM-compatible Bitcoin L2 combining ZK proofs with an optimistic challenge mechanism, aimed at evaluation and integration work.
Strengths
- Condenses the architecture into clear bullets: EVM execution, ZK proofs, optimistic challenges, federated bridge
- States limitations plainly (federated trust, thin dApp ecosystem, unclear path to trustless bridging)
- Positions the project against Stacks, RSK and Merlin and links to sibling notes
- Lightweight and read-only (Read, Grep, Glob), so safe to load
Limitations
- Purely descriptive: no commands, configuration, or code samples
- Positioning data (TVL, dates) reflects early 2026 and cannot be verified from the file itself
- Does not cover bridge internals or a concrete integration procedure
Load it when comparing Bitcoin L2 options or assessing B² as a deployment or bridge-integration target.
Skip it if you need step-by-step integration instructions, contract ABIs, or current market data.
Security analysis
SafeThe skill is a purely informational reference note about the B² Network Bitcoin L2. Its declared allowed-tools are limited to Read, Grep, and Glob, so it cannot modify files, execute shell commands, or reach the network. The body contains only descriptive architecture, use-case, and limitation text with relative markdown links to sibling skill files; there are no instructions to run commands, fetch URLs, handle credentials, or alter agent safety behavior.
No concerns found
How this analysis is madeExamples
We're picking a Bitcoin L2 for our lending protocol. Compare B² Network against Merlin, Citrea and Bitlayer on bridge trust assumptions and EVM ecosystem size.How does the B² Network bridge work today, and what would change with the planned BitVM upgrade?Read the B² Network skill and tell me whether it makes sense to deploy an AMM there given its TVL position and current limitations.name: bitcoin-l2-bsquared description: | B² Network (BSquared): hybrid ZK + optimistic Bitcoin L2 with EVM compatibility. Live since 2024. USE WHEN: evaluating B² for deployment, integrating with their bridge, comparing Bitcoin L2 options. allowed-tools: Read, Grep, Glob
B² Network (BSquared)
Bitcoin L2 with EVM compatibility, ZK proof rollup combined with optimistic challenge mechanism. Deployed 2024, growing 2025-2026.
Architecture
- EVM execution (Solidity contracts).
- ZK proofs for state validity.
- Optimistic challenges as backup verification.
- Bridge: federation + planned BitVM upgrade.
- Native token: B²BTC (peg-style) + B² (governance/utility).
Use cases
- DeFi: yield protocols, lending, AMMs.
- Bitcoin staking-like products: bridged BTC earns yield in B² ecosystem.
- NFTs / Asset issuance.
Position
One of multiple "Bitcoin L2" projects competing for TVL in 2024-2025. Notable but smaller than Stacks, RSK, Merlin in TVL terms (early 2026).
Limitations
- Federation trust for current bridge.
- EVM compatibility but smaller dApp ecosystem.
- Unclear path to fully trustless bridging.
See also
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
1. Download the file
Download SKILL.mdFrom the root of a test project, save the file as .skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.
Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.
mkdir -p '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/download' --output '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md.part' && mv '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md.part' '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
Tools declared by the author (check availability in your agent): Read, Grep, Glob
No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.
The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.
3. Load the skill
After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.
Claude Code
test -f '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md' && test -s '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/bitcoin-l2-bsquared' && cp -R '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4' '.claude/skills/bitcoin-l2-bsquared'Cursor
test -f '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md' && test -s '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/bitcoin-l2-bsquared' && cp -R '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4' '.cursor/skills/bitcoin-l2-bsquared'Codex
test -f '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md' && test -s '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/bitcoin-l2-bsquared' && cp -R '.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4' '.agents/skills/bitcoin-l2-bsquared'OpenSkills
OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.
Official OpenSkills installationopenskills install './.skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4'openskills read 'b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4'Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.
For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.
openskills syncManual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.
4. Try a first task
Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:
Read .skill-downloads/b-network-hybrid-zk-optimistic-bitcoin-l2-mrx3xxs4/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
React Hook Form Best Practices
Development
Master React Hook Form: avoid anti-patterns, manage subscriptions, and handle reset, dirty state, and controlled inputs correctly.
Emotion to Mantine Migration
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Migrate Emotion styled-components to Mantine components with style props and CSS modules. Use when converting .styled.tsx files or removing @emotion imports.
Scope Creep Detector
Development
Analyzes git diffs against a stated intent to detect scope creep, unrelated files, broad PRs, and oversized changes, then suggests keep, split, or justify actions.