L01-I2: Yes
Rationale
The I2P specification website grants CC BY-SA 4.0 unless otherwise marked. NTCP2 and common structures are public specifications; attribution/share-alike govern reuse of their text, without a noncommercial or field-of-use prohibition. The selected IP/TCP layers use IETF implementation permissions.
Assessment method
Documentary classification; no new runtime, interoperability or security experiment
Source context
Primary documents, published reports and versioned source review, 2026-10-15
Outstanding qualification
Do not transfer software-component licenses to specification prose. Copyright/use finding only; referenced cryptographic algorithms do not become patent-cleared.