> For the complete documentation index, see [llms.txt](https://yeasy.gitbook.io/blockchain_guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yeasy.gitbook.io/blockchain_guide/revision.md). # Version History * 2.2.5: 2026-03-24 * Align README quick start and learning paths with the current SUMMARY structure; * Clarify version marker and refresh front-page navigation guidance. * 2.2.4: 2026-03-03 * Update to new version; * Add latest progress; * Support BFT consensus algorithm; * Add more details. * 2.0.0: 2026-01-12 * Major update: Comprehensive revision of content to adapt to the technical landscape of 2026; * Add: Chapter 15 frontier trends (AI, DePIN, RWA); * Update: Bitcoin (Taproot, Ordinals, ETF) and Ethereum (PoS, Layer 2, Account Abstraction); * Update: Cryptography (Post-Quantum, ZK-SNARKs/STARKs) and Consensus Algorithms (PoS, HotStuff); * Optimize: Remove obsolete EOS chapter, integrate Hyperledger project status. * 1.8.6: 2026-03-04 * Fix terminology "miner" -> "validator" on line 19 of `07_ethereum/design.md` (context after Merge); * Add full Contract API example to `11_app_dev/chaincode.md` (recommended over shim API); * Add Fabric Gateway chapter and Go language code examples to `10_fabric_op/sdk.md`; * Update REST API deprecation notice in `11_app_dev/chaincode_example01.md` (v0.6 only); * Update ordering node section in `13_fabric_design/design.md`: add Fabric v3.0 BFT ordering service description; * Update BFT ordering performance characteristics in `13_fabric_design/performance.md`; * Fix various external links: Burrow archive, gRPC/Go official website HTTPS upgrade, Remix HTTPS, Cello Git repo migration, Kafka document link correction; * Fix deprecated `grpc.WithInsecure()` -> `insecure.NewCredentials()` modern pattern in `appendix/grpc.md`; * Correct Vyper positioning description in `07_ethereum/concept.md` (security alternative language rather than mainstream), fix double periods; * Update ZKML limitations description in `15_frontiers/ai_web3.md`, reflecting 2025 technical progress; * Correct modular blockchain date format in `02_overview/classify.md`. * 1.8.5: 2026-03-03 * Comprehensive technical review by experts, fix 8 P0 critical errors and 8 P1 important issues; * Fix mining reward data (12.5 -> 3.125 BTC) in `06_bitcoin/mining.md`, add halving history and hash rate data; * Fix PoS consensus context in `07_ethereum/concept.md`, remove outdated "mining" expressions and ETH price references; * Fix duplicate rows in comparison table and UTXO spelling in `07_ethereum/design.md`; * Update Solidity ^0.8.0 syntax and Geth --http command in `07_ethereum/smart_contract.md`; * Fix Prometheus "push" -> "pull" method in `10_fabric_op/operation.md`; * Fix Caliper/Grid URLs, Fabric 3.0 official release status in `08_hyperledger/project.md`; * Fix Org2 anchor node variable name error in `09_fabric_deploy/start_local.md`; * Fix import path error in `appendix/golang/tools.md`, update golint -> golangci-lint; * Update protobuf import path and protoc command migration in `appendix/grpc.md`; * Add Tendermint BFT chapter and six consensus algorithms comparison table in `04_distributed_system/bft.md`; * Add new DeFi attacks (flash loans, MEV, cross-chain bridges, governance attacks) to `05_crypto/smart_contract_vulns.md`; * Add MEV chapter in `12_web3/defi.md` and governance attack case in `12_web3/dao.md`; * Add Web3 challenges and reality chapter in `12_web3/intro.md`; * Add ZKML limitations analysis in `15_frontiers/ai_web3.md`; * Add sustainability risk analysis in `15_frontiers/depin.md`; * Add core regulatory framework checklist (Reg D, MiFID II, MiCA, etc.) in `15_frontiers/rwa.md`; * Add modular blockchain classification in `02_overview/classify.md`; * Update 12 modern terms in `appendix/terms.md`; * Update Docker version recommendations (18.03 -> 24.0+), Kafka deprecation notes, Layer 2 performance context; * Update USDT/USDC market cap data, add time labels; * Improve Cello image version warning, Azure service shutdown notice. * 1.8.4: 2026-01-13 * Comprehensive editorial review for publication readiness; * Fix Chinese monetary history TBD marker in `06_bitcoin/currency.md`; * Fix Kafka migration TBD marker in `10_fabric_op/upgrade.md`, noting Kafka is deprecated; * Verify all chapter content relevance (all updated to 2025). * 1.8.3: 2026-01-12 * Comprehensive editorial review for publication readiness; * Fix structural issues: create missing `10_fabric_op/node.md`, `12_web3/summary.md`; * Fix SUMMARY.md links for golang appendix and add Web3 summary; * Update `07_ethereum/design.md`: PoW→PoS consensus, Rollup-centric scalability; * Rewrite `07_ethereum/install.md` for modern Geth installation; * Update Go/Docker versions in `08_hyperledger/contribute.md`; * Remove TODO markers from `03_scenario/finance.md` and `03_scenario/others.md`; * Update outdated scenarios (2026 context): TradeLens (discontinued), JPM Coin (Onyx), IoT (DePIN); * Verify all 110+ image references (relative paths in `_images/`) and 120+ external links. * 1.8.2: 2026-01-11 * Add new chapters: Layer 2, CBDC (with global overview), Web3/DeFi/DAO, Zero-Knowledge Proofs; * Rewrite NFT chapter with 2022-2025 market updates (Ordinals, NFTFi, SBT); * Rewrite Fabric chaincode lifecycle for v2.x (Package-Install-Approve-Commit); * Update Ethereum tools (Hardhat, Foundry, MetaMask); * Update Go language guide (Go Modules, GOPROXY); * Update Fabric install guide (install-fabric.sh, LevelDB vs CouchDB); * Fix outdated data: Bitcoin block reward, SHA-3 status, DeFi TVL, pizza BTC value; * Add version notice to Fabric architecture design chapter; * Update appendix resource links. * 1.8.0: 2026-01-10 * Update Bitcoin history (ETF, halving) and stats; * Update Ethereum history (The Merge, Dencun upgrade) and features; * Update Hyperledger Fabric version (v2.5 LTS, v3.0) and project status; * Update BaaS platform info (IBM Blockchain Platform, Azure). * 1.7.0: 2025-12-28 * Update outdated project status; * Fix typos and links. * 1.6.0: 2021-12-01 * Fix expressions; * Fix typos. * 1.5.0: 2021-01-21 * Add operation chapter; * Fix typos and polish expression. * 1.4.0: 2020-06-18 * Refine deployment fabric with v2.0 version; * Update hyperledger community and projects; * Add operation guide and best practices. * 1.3.0: 2019-12-31 * Add more crypto techniques; * Update go and related tools; * Update bitcoin project. * 1.2.0: 2018-12-31 * Add common Golang tools and tips; * Update cryptography related knowledge, add bloom filters etc; * Update content of Hyperledger projects; * Update distributed system chapter. * 1.1.0: 2018-04-24 * Update group signature; * Update evolution of blockchain and distributed ledgers; * Update latest progress of Bitcoin and Ethereum. * 1.0.0: 2017-12-31 * Update BaaS design; * Update appendix section; * Correct some expressions. * 0.9.0: 2017-08-24 * Correct wording; * Add content for fabric 1.0; * "Blockchain Principles, Design and Application" officially published. * 0.8.0: 2017-03-07 * Improve application scenarios etc; * Improve distributed system technologies; * Improve cryptography technologies; * Update Hyperledger usage according to latest code. * 0.7.0: 2016-09-10 * Improve consensus technologies etc; * Correct wording. * 0.6.0: 2016-08-05 * Modify wording; * Add more smart contracts; * Add more business scenarios. * 0.5.0: 2016-07-10 * Add content for Hyperledger project; * Add content for Ethereum project; * Add Lightning Network introduction and key technology analysis; * Add Blockchain as a Service (BaaS); * Add Bitcoin project. * 0.4.0: 2016-06-02 * Add application scenario analysis. * 0.3.0: 2016-05-12 * Add digital currency issue analysis. * 0.2.0: 2016-04-07 * Add Hyperledger project introduction. * 0.1.0: 2016-01-17 * Add blockchain introduction.