---
title: "T13 (NCITS Technical Committee T13)"
type: "entity"
entity_kind: "concept"
status: "hub"
canonical_name: "T13"
aliases: ["NCITS T13","T.13"]
first_seen: "2026-07-30T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["CPRM","4C Entity","ATA/ATAPI standard","ANSI/NCITS supermajority rule"]
---


The ANSI-accredited standards committee (under NCITS) that develops the ATA/ATAPI hard-drive command-set specification. In 2000–2001 it hosted the fight over whether to standardize the [[4C Entity]]'s [[CPRM]] copy-protection scheme into ATA — a proposal that a December 2000 sub-vote and an April 2001 full vote both failed to clear T13's two-thirds late-proposal supermajority threshold, despite each winning a bare majority.

## References
- [[claim-4c-entity-cprm-proposal-bound-content-to-specific-ata-drive]]
- [[claim-ibm-withdrew-2001-cprm-ata-proposal-resubmitted-as-generic-functionality]]
- [[claim-t13-rejected-generic-functionality-proposal-april-2001-supermajority-rule]]
- [[claim-andre-hedrick-opposed-cprm-ata-standardization-on-vendor-unique-command-grounds]]
- Captures: 10-inbox/raw/2026-07-30-what-exactly-did-the-4c-entitys-cprm-proposal.md