2013-09-19 2026-01-15 Concise Binary Object Representation (CBOR) Carsten Bormann 0-19 Standards Action Assignments should start with value 16 in order to reserve the lower numbers for contiguous blocks (if any). 32-255 Specification Required 0-19 Unassigned 20 False 21 True 22 Null 23 Undefined 24-31 Reserved 58-255 Unassigned 59 This value as a map key indicates that the Claim Value is an array of redacted Claim Keys at the same level as the map key. (TEMPORARY - registered 2025-12-16, expires 2026-12-16) 60-255 Unassigned