Hi everybody. This mail is a kind reminder of the Call for papers of IWBOSE2021. The Workshop’s goal is to gather together practitioners and researchers to discuss on progresses on the research and on the practical usage of blockchain technologies and smart contracts, focusing on the application and definition of Software Engineering principles and practices specific for such software technology, and for the technologies relying on it. The workshop calls researches on specific tools, paradigms, principles, approaches to deal with the new challanges posed by Blockchain technology to software engineers and for a specific Blockchain Oriented Software Engineering (BOSE). Submission Guidelines All submissions must come in PDF format and conform, at time of submission, to the IEEE Conference Proceedings Formatting Guidelines (title in 24pt font and full text in 10pt font, LaTEX users must use \documentclass[10pt,conference]{IEEEtran} without including the compsoc or compsocconf option. Also, papers must comply with the IEEE Policy on Authorship. All papers must be original and not simultaneously submitted to another journal or conference. The following paper categories are welcome: All submissions must be in English. Submissions should not exceed *12 pages* (the last 2 pages for references only), and should be uploaded electronically in PDF format via EasyChair. We also solicit *short papers submissions* (4 pages). Important note: IWBOSE at SANER 2021 follows a full double-blind review process.In order to be compliant with the double-blind policy, submitted papers must adhere to the rules from ASE 2017 double-blind instructions.Please refere to SANER 2021 ( https://saner2021.shidler.hawaii.edu/) for details. The easychair link for submissions is: https://easychair.org/conferences/?conf=iwbose2021 List of Topics - Blockchain Oriented Software - Blockchain software analysis and - Formal specification of Blockchain - Agile and Lean processes for Blockchain software - Tools for Blockchain software distributed development and community - Smart Contracts - Security and reliability in Blockchain and Smart - Smart Contract Testing ( - Blockchain Transaction Testing (BTT) to ensure status - Blockchain Software architecture, design notation and - Smart Contracts Software architecture, design notation and - Software Engineering for - Applications in Economy and Finance, Internet of Things, Notarization, Supply chain - Web 3.0 – e-commerce, e-health, e-democracy, social networks, etc . Santiago.