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CryptoCurrency Security Standard (CCSS) v9.0

Industry de facto standard for cryptocurrency exchange and custodian security. 47 control objectives across 10 security aspects covering key/seed generation, wallet creation, key storage, key usage, key compromise protocol, keyholder grant/revoke, third-party audits, data sanitization, proof of reserve, and log auditing. Three certification levels (Level 1-3) with increasing rigour. Published by the CryptoCurrency Certification Consortium (C4).

Clause Title SP 800-53 Controls
1.01.1 Key Material Generation — Confidentiality of Key Generation Environment
1.01.2 Key Material Generation — Entropy and Randomness Sources
1.01.3 Key Material Generation — Software Validation and Integrity
1.01.4 Key Material Generation — Automated Signing Agent Key Transfer
1.01.5 Key Material Generation — Level 1 Documentation and Procedural Controls
1.01.6 Key Material Generation — Level 2 Generation Methodology Validation
1.01.7 Key Material Generation — Level 3 Advanced Ceremony Controls
1.02.1 Wallet Creation — Single-Signer Wallet Architecture
1.02.2 Wallet Creation — Multi-Signer Wallet Architecture
1.02.3 Wallet Creation — Wallet Inventory and Address Management
1.02.4 Wallet Creation — Address Verification and Integrity
1.02.5 Wallet Creation — Level 2 Documented Custody Policy for Wallet Creation
1.02.6 Wallet Creation — Level 2 Deterministic Wallet Controls
1.02.7 Wallet Creation — Level 3 Smart Contract Wallet Auditing
1.02.8 Wallet Creation — Level 3 Smart Contract State Monitoring
1.03.1 Key Storage — Encryption of Keys at Rest
1.03.2 Key Storage — Backup Existence and Accessibility
1.03.3 Key Storage — Environmental Protection of Key Backups
1.03.4 Key Storage — Level 2 Geographic Separation of Key Backups
1.03.5 Key Storage — Level 2 Access Control for Key Material
1.03.6 Key Storage — Level 3 Cold Storage and Hardware Security Controls
1.03.7 Key Storage — Level 3 EMP-Resistant Backup Storage
1.04.1 Key Material Access — Keyholder Onboarding and Access Grant Procedures
1.04.2 Key Material Access — Keyholder Offboarding and Access Revocation
1.04.3 Key Material Access — Level 2 Quorum-Based Keyholder Authorization
1.04.4 Key Material Access — Level 2 Keyholder Identity Verification and Training
1.04.5 Key Material Access — Level 3 Formal Keyholder Registry and Audit Trail
1.05.1 Key Usage — Transaction Authorization and Signing Controls
1.05.2 Key Usage — Key Usage Logging and Non-Repudiation
1.05.3 Key Usage — Level 2 Multi-Party Authorization for High-Value Transactions
1.05.4 Key Usage — Level 2 Destination Address Whitelisting and Verification
1.05.5 Key Usage — Level 3 Hardware-Enforced Signing and Trusted Display
1.06.1 Key Compromise Protocol — Documented Key Compromise Response Procedures
1.06.2 Key Compromise Protocol — Compromised Keyholder Response and Access Revocation
1.06.3 Key Compromise Protocol — Level 2 Tested and Rehearsed Response Procedures
1.06.4 Key Compromise Protocol — Level 3 Out-of-Band Communication and Advanced Compromise Controls
2.01.1 Security Audits — Level 1 Vulnerability Scans and Annual Security Review
2.01.2 Security Audits — Level 2 Independent Penetration Testing
2.01.3 Security Audits — Level 3 Full Independent CCSS Compliance Audit
2.02.1 Data Sanitization — Level 1 Documented Sanitization Policy for Key Material
2.02.2 Data Sanitization — Level 2 Verified Destruction with Evidence
2.02.3 Data Sanitization — Level 3 Third-Party Verified Destruction
2.03.1 Proof of Reserve — Level 1 Internal Reserve Verification and Reconciliation
2.03.2 Proof of Reserve — Level 2 Independent Third-Party Reserve Attestation
2.04.1 Audit Logs — Level 1 Logging Policy and Key Management Event Logging
2.04.2 Audit Logs — Level 2 Tamper-Evident Log Storage and Alert Generation
2.04.3 Audit Logs — Level 3 One-Year Retention, SIEM Integration, and Blockchain Event Monitoring