Safety Norms: Blockchain, Web3 and Emerging Digital Technologies

1Purpose, Scope and Safety Principles

These norms exist to prevent financial loss, privacy harm, service disruption and unsafe automation caused by poorly controlled digital systems. They apply to staff, contractors, students and volunteers who work on blockchain networks, smart contracts, wallets, nodes, decentralized applications, token issuance, oracles and supporting infrastructure in development, test and production environments.

Four principles guide every norm: least privilege, defense in depth, fail-safe design and transparency about risk. Many ledgers are immutable, so a mistake may be permanent. Treat every irreversible action as high risk until it has been reviewed and approved.

• MANDATORY: No one may hold, move or deploy real assets on a public network without written authorization from the named system owner.
• RECOMMENDED: Maintain a risk register for each project and review it when the design changes.

2Roles, Competence and Accountability

Each system needs a named owner who approves changes, a security lead who approves access and key management, and a compliance contact who confirms legal obligations. Developers write and test code. Operators run nodes and infrastructure. Reviewers check code and configuration independently of the author. Users may only use systems for approved purposes.

Work involving securities, payments, custody, lending or anti-money-laundering controls is regulated in many jurisdictions. Confirm who may lawfully perform such work before it starts.

• Record the accountable owner for every system in the system inventory.
• Require documented competence in cryptography basics, key management and secure coding before granting production privileges.
• Separate duties so that the author of a smart contract never approves its own deployment alone.
• Untrained individuals must not operate signing keys, treasury functions or validator nodes.

3Course-Specific Hazards and Risk Assessment

Typical activities include writing and auditing smart contracts, operating full nodes and validators, managing wallets and seed phrases, issuing tokens, building interfaces that request signatures, connecting oracles, using AI tools to generate code and analyzing on-chain data that may contain personal information. Each activity carries specific hazards that must be named before work begins.

Risk is scored as likelihood multiplied by impact on a locally defined scale. Any item rated high requires a documented control and a named reviewer before work proceeds. Re-assess after architectural changes, new integrations or incidents.

• Irreversible transactions: a wrong address, token or amount may not be recoverable. Risk: high.
• Smart contract logic errors such as reentrancy, arithmetic mistakes, access control gaps and unchecked external calls. Risk: high.
• Private key or seed phrase exposure through phishing, malicious browser extensions, clipboard malware or careless storage. Risk: high.
• Malicious signature requests that grant unlimited spending rights over tokens. Risk: high.
• Oracle manipulation or stale price feeds causing incorrect liquidations or payouts. Risk: medium to high.
• Node or validator downtime, penalties for faulty signing and resource exhaustion. Risk: medium.
• Personal data written to public ledgers or exposed through analytics. Risk: high.
• AI-generated code containing hidden flaws or leaked secrets. Risk: medium.
• Fake tokens, counterfeit airdrops and impersonation of project staff. Risk: medium.

4Preventive Controls and Safe Work Practices

Mandatory rules apply before any change reaches a live network. Recommendations improve resilience but become mandatory only when the local procedure adopts them.

Testing on public networks with real funds is prohibited unless the owner has authorized the test in writing. Authorized tests must be scoped, limited in value and reversible where possible. Security research and penetration testing must follow a written scope, rules of engagement and a coordinated disclosure policy. Never attack live systems, probe third-party nodes or exploit a vulnerability for personal gain. Report findings privately to the owner.

• MANDATORY: Test all contract code on a local or test network before any mainnet deployment and keep the test results.
• MANDATORY: Obtain independent code review for any contract that controls funds, permissions or upgrades.
• MANDATORY: Protect treasury, upgrade and admin functions with multisignature or threshold signing, with signers on separate devices and in separate locations.
• MANDATORY: Never type, paste, photograph or email seed phrases or private keys. Store them only in approved hardware or sealed offline storage.
• MANDATORY: Check the destination address, token contract, amount and spender on the hardware device display before approving any signature.
• MANDATORY: Limit token approvals to the amount needed and revoke approvals that are no longer used.
• MANDATORY: Pin dependencies to reviewed versions and verify their checksums before use.
• MANDATORY: Do not run unreviewed AI-generated code against production systems or treat it as audited.
• MANDATORY: Use emergency pause or upgrade functions only through the documented emergency runbook.
• RECOMMENDED: Use time locks on sensitive administrative changes so monitors and users can respond.
• RECOMMENDED: Run static analysis and fuzz testing, then review the findings manually.
• RECOMMENDED: Use a dedicated device for high-value signing and keep it offline when not in use.

5Equipment, Environment, Information and Protective Safeguards

The equipment in this field is digital and physical. Workstations used for signing or key management should be dedicated, patched and free of unnecessary browser extensions. Nodes and validators need hardened servers, restricted remote access, monitoring and tested backups. Record every system, its version and its owner in the inventory.

Privacy and data protection laws may apply to personal data processed through blockchain systems. How they apply to immutable records is jurisdiction-dependent, so consult qualified privacy counsel during design. Physical controls also matter: keep hardware signers in locked, access-controlled rooms, out of public view, and store them in clean, dry conditions as the manufacturer instructs.

• Require multi-factor authentication for code repositories, cloud consoles and admin panels, preferably with hardware security keys.
• Keep wallets and signing software on devices separate from general browsing and email.
• Encrypt backups of keys and configuration, store copies in separate locations and test restoration on a fixed schedule.
• Collect only the personal data the purpose requires. Do not store personal data on-chain. Store references or hashes off-chain under access control.
• Log access to production secrets and review those logs on a schedule set locally.
• Restrict security findings and architecture documents to a need-to-know group.

6Incident Reporting, Emergency Response and Escalation

An incident is any event that threatens assets, data, availability or trust. Examples include suspected key compromise, unauthorized transactions, unexpected contract behavior, oracle failure or a reported vulnerability. Near misses, such as a signature prompt that looked wrong and was rejected, must also be reported because they reveal control weaknesses.

Emergency response follows a written runbook. Authorized responders may invoke a contract pause only as the runbook directs. Emergency services are not a substitute for security response. If any person is physically threatened or injured, contact local emergency services first and then the security lead.

• Report suspected incidents to the security lead immediately, within the time set by the local procedure, without waiting to confirm the full picture.
• Isolate affected keys, revoke credentials and disconnect compromised systems where the runbook allows.
• Do not discuss vulnerabilities publicly or attempt fund recovery unless the incident lead directs it.
• Preserve logs, transaction hashes, screenshots and configuration files for investigation.
• Notify compliance and legal counsel where personal data or regulated assets may be affected. Notification duties are jurisdiction-dependent.
• Conduct a blameless post-incident review and record corrective actions with named owners and completion targets.

7Records, Training, Inspection and Review

Maintain a system inventory, risk register, change log, access list, key ceremony records, test reports, audit findings and incident records. Each record must show who approved what and when. Store records securely and set retention periods according to local policy and applicable law.

Monitor transaction alerts, node health, unusual approval volume and oracle deviations. Review these norms when a system changes materially, after any incident and when relevant regulations change. Verify current laws, standards and manufacturer instructions with competent authorities or qualified professionals, because versions differ by jurisdiction.

• Complete role-based training on key handling, phishing recognition, smart contract security and incident reporting before access is granted.
• Refresh training when tools, networks or legal requirements change.
• Conduct access reviews on a fixed schedule and remove unused accounts and approvals.
• Test the emergency runbook through tabletop exercises with named participants and recorded outcomes.

8Responsible Use and Conclusion

Responsible use means no deceptive tokens, no market manipulation, no unauthorized surveillance of users through on-chain analysis, no use of systems for activities that the law prohibits, and honest disclosure of material risks to users. Systems should be designed so that the safest action is also the easiest one.

This document is educational guidance. It does not replace professional authorization, formal training, approved procedures, supervision or legal advice. Use it as a foundation for locally approved safety procedures and adapt it to the systems, laws and risks of your own organization.

Implementation checklist

• Confirm a named owner and written authorization exist before any deployment or fund movement.
• Test all contract code on a non-production network and keep the results before mainnet release.
• Obtain independent review for any contract that controls funds, permissions or upgrades.
• Verify addresses, amounts, token contracts and spenders on a hardware display before signing.
• Never share seed phrases or private keys in any form, including photos, messages or email.
• Limit token approvals to the needed amount and revoke unused approvals.
• Keep personal data off the ledger and store references under access control.
• Report suspected incidents and near misses to the security lead immediately.
• Review access lists, logs and the emergency runbook on the locally defined schedule.
• Verify current legal and regulatory duties with qualified professionals before launch.