Blockchain Commons Technology Overview

An introduction to key concepts and theoretical foundations for blockchain infrastructure and interoperability, including a tour of several exciting open-source technologies developed by Blockchain Commons such as encoding methods, interoperable specifications, and security architectures. CONTENTS 00:05 - About Blockchain Commons 02:05 - Presentation Overview Part I: Concepts 02:35 - Cryptographic Seeds 02:56 - Entropy (Random Numbers) 03:31 - Example Tools 04:06 - Secure Storage 04:45 - Deriving Objects 05:12 - Multisigs 06:34 - Airgaps Part II: Foundations 07:13 - Universal Resource Identifiers 08:15 - QR Codes 11:13 - Encoding (Concise Binary Object Representation) 11:37 - Error Detection (CRC-32) 12:55 - Uniquely Identify Digital Objects (SHA-256) 13:36 - Shamir's Secret Sharing 14:53 - Fountain Codes Part III: Blockchain Commons Technologies 16:13 - Bytewords 19:58 - Uniform Resources (URs) 22:53 - Multi-Part URs 24:24 - UR Types Registry 24:55 - LifeHash 25:47 - Digest Source Specification 26:19 - Object Identity Block 26:52 - Shared Secret Key Reconstruction 28:46 - Torgap, QuickConnect & Gordian System 29:20 - Collaborate with us! [email protected] COMMUNITY LINKS * Blockchain Commons Website — https://www.blockchaincommons.com/ * Blockchain Commons Repos — https://github.com/BlockchainCommons * Airgapped Wallet Community — https://github.com/BlockchainCommons/Airgapped-Wallet-Community IN-DEPTH DOCS * UR Overview — https://github.com/BlockchainCommons/crypto-commons/blob/master/Docs/ur-1-overview.md * A Guide to Using UR for Key Material — https://github.com/BlockchainCommons/crypto-commons/blob/master/Docs/ur-2-keys.md BLOCKCHAIN COMMONS TECHNOLOGIES * ByteWords — https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-012-bytewords.md * LifeHash — https://github.com/BlockchainCommons/bc-lifehash * SSKR — https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-011-sskr.md * Uniform Resources (URs) — https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-005-ur.md * Registry of UR Types — https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-006-urtypes.md RELATED LIBRARIES * ByteWords — https://github.com/BlockchainCommons/crypto-commons#bc-bytewords * LifeHash — https://github.com/BlockchainCommons/crypto-commons#lifehash * SSKR — https://github.com/BlockchainCommons/crypto-commons#bc-sskr * UR — https://github.com/BlockchainCommons/crypto-commons#bc-ur SECURITY ARCHITECTURES & METHODS * #SmartCustody — https://www.smartcustody.com/ * TorGap — https://github.com/BlockchainCommons/torgap APPLICATIONS MENTIONED * Gordian Guardian — https://github.com/BlockchainCommons/GordianGuardian-iOS * Gordian Server — https://github.com/BlockchainCommons/GordianServer-macOS * Gordian Wallet — https://github.com/BlockchainCommons/GordianWallet-iOS * Keytool — https://github.com/BlockchainCommons/keytool-cli * LetheKit — https://github.com/BlockchainCommons/lethekit * Seedtool — https://github.com/BlockchainCommons/seedtool-cli Thank you to our generous patrons and sponsors including Bitmark, Blockchainbird and Unchained Capital. Thanks also to our ongoing Github Sponsors: Adrian Gropper, Mark S. Miller, Glenn Willen, Alexandre Linhares, Trent McConaghy, Eric Kuhn, Zach Herbert, Dario, Protocol Labs, and five additional sponsors (https://www.blockchaincommons.com/sponsors) Please support Blockchain Commons by becoming a sustaining sponsor or making a BTCPay donation: * Sponsorship: https://github.com/sponsors/BlockchainCommons * BTCPay: https://btcpay.blockchaincommons.com/