US Federal — United States Code (U.S.C.)

Complete, unannotated federal statutory corpus and directed cross-reference citation graph for the United States Code across all 53 active Titles (Title 1 through Title 54, excluding reserved Title 53), cryptographically sealed from official Office of the Law Revision Counsel (OLRC) USLM XML sources.

53 Active Titles

2,898 Distinct Chapters

60,451 Statutory Sections

746,040 Subsections

69,188 Citation Edges

100% AKN 3.0 XSD Valid

Single-Snapshot Dataset Acquisition • 10/2026 Edition

United States Code (U.S.C.) — Complete Medallion Snapshot

One-time purchase for the complete October 2026 (10/2026) edition single-snapshot dataset of the United States Code (Release Point Pub. L. 119-121). Includes perpetual commercial license rights to the Bronze raw source payloads, Silver OASIS Akoma Ntoso 3.0 XML archive, Gold Apache Parquet tables (sections, subsections, edges), and SHA-256 provenance manifests.

Price: $2,000 USD | Edition: 10/2026 Snapshot | Delivery: Snowflake Marketplace / Direct Archive | License: Perpetual Snapshot License | Purchase & Download Snapshot →

Keystone Legal Data — Commercial Dataset License Agreement Standard Single-Snapshot Terms (v2026.10)

1. Grant of Perpetual Single-Snapshot License

Upon payment of the one-time $2,000 USD license fee, Keystone Data Services LLC, d/b/a Keystone Legal Data ("Licensor"), grants Customer ("Licensee") a perpetual, non-exclusive, non-transferable, worldwide enterprise license to store, query, index, and use the 10/2026 Edition Single-Snapshot Dataset of the United States Code (including all delivered Bronze source files, Silver OASIS Akoma Ntoso 3.0 XML files, Gold Parquet tables, directed citation graph schemas, and cryptographic manifests, collectively the "Licensed Dataset"). Future statutory editions or legislative updates are sold separately as independent snapshots.

2. Permitted Enterprise, Analytics & AI/LLM Uses

Licensee may freely integrate the Licensed Dataset into internal data warehouses, legal research platforms, retrieval-augmented generation (RAG) pipelines, vector databases, knowledge graphs, and machine learning or large language model (LLM) training, fine-tuning, and inference systems, and may display statutory excerpts and citation outputs to end users in the ordinary course of Licensee's products and services.

3. Restrictions on Bulk Redistribution

While the underlying enacted statutory text of the United States Code is in the public domain under 17 U.S.C. § 105 and the government edicts doctrine, the normalized schema, structural subsection shredding, OASIS Akoma Ntoso 3.0 XML markup, resolved citation graph topology, and cryptographic lineage manifests are proprietary data engineering deliverables of Licensor. Licensee may not resell, sublicense, publish, or redistribute the Licensed Dataset in bulk or as a standalone statutory data product or competing data catalog.

4. Provenance & Disclaimer of Warranties

Every record in the Licensed Dataset is cryptographically sealed via SHA-256 to its source legislative payload as published by the Office of the Law Revision Counsel of the U.S. House of Representatives as of the snapshot date. The Licensed Dataset is provided "AS IS" for analytical and informational purposes and does not constitute legal advice. Licensor's aggregate liability under this Agreement shall not exceed the license fee paid for the snapshot.

Medallion Architecture Deliverables

Three-tier statutory distribution with end-to-end SHA-256 cryptographic lineage from raw OLRC USLM XML payloads to analytical Parquet tables.

Bronze Layer

Immutable Source Payloads

Verbatim section payloads sliced from official Office of the Law Revision Counsel (OLRC) United States Legislative Markup (USLM 1.0) release archives with wire-level SHA-256 hashes.

Source Authority U.S. House OLRC
Sealed Payloads 60,451 Files
Lineage Manifest bronze_manifest.jsonl
Integrity Seal manifest.sha256 (0444)

Silver Layer

OASIS Akoma Ntoso 3.0 XML

Normalized, schema-validated OASIS LegalDocML (Akoma Ntoso 3.0) XML documents containing strictly enacted statutory text, subsection hierarchy, and Public Law / Statutes at Large credit citations.

XML Standard OASIS AKN 3.0 (XSD 1.0)
Validated Docs 60,451 / 60,451 (100%)
History Coverage 60,451 / 60,451 (100%)
Third-Party IP / Notes 0 (Strictly Stripped)

Gold Layer

Apache Parquet & Citation Graph

Snappy-compressed Apache Parquet tables (sections, subsections, edges) and pre-indexed DuckDB analytical catalog ready for immediate SQL, Polars, PyArrow, or RAG/LLM ingestion.

Section Table 60,451 Rows (77.12 MB)
Subsection Table 746,040 Rows (76.60 MB)
Citation Graph 69,188 Directed Edges
DuckDB Catalog keystone_usc.duckdb

Artifact / Archive	Layer / Format	Records	Size	SHA-256 Cryptographic Seal
sections.parquet	Gold Columnar Table (Snappy Parquet)	60,451	77.12 MB	8f96ea2d15143c3452b272d677a42dd74ad31ed6bb936e1ddbf176c116777f23
subsections.parquet	Gold Hierarchical Paragraphs (Snappy Parquet)	746,040	76.60 MB	51e8e55409c1cc70b2a558d3d25f1bee5f4c1206507d0416d8798acac2496b31
edges.parquet	Gold Directed Citation Graph (Snappy Parquet)	69,188	971.45 KB	035794c387d152d1f68fad11cb5b66023e200ff48ff87944138a7f3b8ff37152
keystone_usc_bronze_2026-10.tar.gz	Complete Bronze Source Archive (Raw Payloads + Manifests)	60,451 files	66.56 MB	8ceaa15a6c0cf48d3a8c3fb108993048778bf211b8b14c7b271a1c1c1cf45bf9
keystone_usc_silver_2026-10.tar.gz	Complete Silver OASIS AKN 3.0 XML Archive (XML + XSD + Manifests)	60,451 docs	80.44 MB	6a92d7c7b4a4c938b1086612fb4f883f8356c9608186be47268378c45a4e57a5
keystone_usc_gold_2026-10.tar.gz	Complete Gold Release Archive (Parquet + Manifests)	875,679	126.22 MB	be8f4dcc7e4fef2586a3ed09f6711b7e68c5765a7183e9af4037471852b568e3
keystone_usc_title25_sample.tar.gz	Title 25 Sample Showcase Slice (Indians)	2,399 secs	2.25 MB	2e602674f419b8a85aa354ee203a97d82b8f1efd3a91506c353d3d333f3443a5

Canonical Record Specimen: 1 U.S.C. § 7

Side-by-side view of Title 1, Section 7 (Marriage) in Silver OASIS Akoma Ntoso 3.0 XML and Gold Parquet JSON representation.

            data/silver/usc/akn_xml/title_1/usc-1-7.xml
            Silver OASIS AKN 3.0
          

<?xml version='1.0' encoding='utf-8'?>
<akomaNtoso xmlns="http://docs.oasis-open.org/legaldocml/ns/akn/3.0"
            xmlns:meta="https://pipeline.local/schema/meta">
  <act name="statute">
    <meta>
      <identification source="#pipeline">
        <FRBRWork>
          <FRBRthis value="/akn/us/act/usc/title-1/section-1-7"/>
          <FRBRdate date="2026-10-22" name="snapshot"/>
          <FRBRcountry value="us_fed"/>
        </FRBRWork>
      </identification>
      <proprietary source="#pipeline">
        <meta:source_html_sha256>c89dfed971577a00...c22e7</meta:source_html_sha256>
        <meta:doc_id>usc-1-7</meta:doc_id>
        <meta:jurisdiction>us_fed</meta:jurisdiction>
        <meta:container_id>1</meta:container_id>
        <meta:chapter_id>1-1</meta:chapter_id>
        <meta:chapter_name>CHAPTER 1: RULES OF CONSTRUCTION</meta:chapter_name>
        <meta:history_note>Added Pub. L. 104–199, § 3(a), Sept. 21, 1996, 110 Stat. 2419;
        amended Pub. L. 117–228, § 5, Dec. 13, 2022, 136 Stat. 2306.</meta:history_note>
      </proprietary>
    </meta>
    <body>
      <section eId="sec_1-7">
        <num>1-7</num>
        <heading>Marriage</heading>
        <paragraph eId="sec_1_7__p_1" class="indent-1">
          <num>(a)</num>
          <content>
            <p>(a) For the purposes of any Federal law, rule, or regulation
            in which marital status is a factor, an individual shall be
            considered married if that individual’s marriage is between 2
            individuals and is valid in the State where the marriage was
            entered into...</p>
          </content>
        </paragraph>
        <paragraph eId="sec_1_7__p_2" class="indent-1">
          <num>(b)</num>
          <content>
            <p>(b) In this section, the term “State” means a State, the
            District of Columbia, the Commonwealth of Puerto Rico, or any
            other territory or possession of the United States.</p>
          </content>
        </paragraph>
      </section>
    </body>
  </act>
</akomaNtoso>

            gold.sections / gold.subsections / gold.edges
            Gold Parquet Row
          

// 1. sections.parquet (Primary Key: doc_id = "usc-1-7")
{
  "jurisdiction": "us_fed",
  "doc_id": "usc-1-7",
  "universal_doc_id": "us_fed-usc-1-7",
  "container_type": "title",
  "container_id": "1",
  "container_name": "Title 1: General Provisions",
  "title": 1,
  "chapter_id": "1-1",
  "chapter_name": "CHAPTER 1: RULES OF CONSTRUCTION",
  "subchapter_id": "",
  "subchapter_name": "",
  "section_number": "1-7",
  "heading": "Marriage",
  "paragraph_count": 3,
  "history_note": "Added Pub. L. 104–199, § 3(a), Sept. 21, 1996, 110 Stat. 2419; amended Pub. L. 117–228, § 5, Dec. 13, 2022, 136 Stat. 2306.",
  "source_html_sha256": "c89dfed971577a009f53ad5d8e111b3471f631968c533beedde4bd11958c22e7",
  "akn_sha256": "4b669a8d3c9f5b1239a7d4a652ef9801d219e84a912a988b8736c4190ef28a11"
}

// 2. subsections.parquet (3 rows for usc-1-7)
{
  "doc_id": "usc-1-7",
  "paragraph_eid": "sec_1_7__p_2",
  "paragraph_seq": 2,
  "enum_label": "(b)",
  "indent_level": 1,
  "text": "(b) In this section, the term “State” means a State, the District of Columbia, the Commonwealth of Puerto Rico, or any other territory or possession of the United States."
}

// 3. edges.parquet (Sample Directed Citation Edge in Title 1)
{
  "jurisdiction": "us_fed",
  "source_doc_id": "usc-1-112b",
  "source_section": "1-112b",
  "target_doc_id": "usc-22-2151",
  "target_section": "22-2151",
  "target_title": 22,
  "citation_count": 1
}

Gold Parquet Schema Specification

Standardized cross-jurisdiction schema shared across all 57 Keystone Legal Data statutory repositories.

Table	Column Name	Parquet Type	Description
sections.parquet	jurisdiction / doc_id / universal_doc_id	VARCHAR	Jurisdiction code (`us_fed`), collection-scoped primary key (`usc-1-7`), and global key.
	container_type / container_id / container_name	VARCHAR	Top-level statutory container metadata (e.g., `title`, `26`, `Title 26: Internal Revenue Code`).
	chapter_id / chapter_name	VARCHAR	Intermediate chapter identifier and official chapter heading (100% populated across all 60,451 sections).
	section_number / heading	VARCHAR	Canonical title-section number (e.g., `1-7`) and cleaned catchline heading.
	full_text	VARCHAR	Complete, newline-delimited statutory text of the section (strictly enacted text only).
	history_note	VARCHAR	Public Law and Statutes at Large enactment and amendment credits (e.g., `Pub. L. 117–228, § 5, Dec. 13, 2022, 136 Stat. 2306`).
	paragraph_count	INT64	Number of child subsection paragraphs shredded into `subsections.parquet`.
	source_html_sha256 / akn_sha256	VARCHAR	Cryptographic SHA-256 digests linking the Gold row to its exact Silver XML and Bronze USLM payload.
subsections.parquet	paragraph_eid / paragraph_seq	VARCHAR / INT64	OASIS AKN 3.0 element ID (`sec_1_7__p_2`) and deterministic 1-based sequence order within the section.
	enum_label / indent_level	VARCHAR / INT64	Extracted structural enumerator (e.g., `(a)`, `(1)`, `(A)`) and hierarchical indentation depth (`1`–`6`).
	text	VARCHAR	Cleaned text of the individual statutory subsection or paragraph.
edges.parquet	source_doc_id / target_doc_id	VARCHAR	Directed citation graph edge resolving in-text statutory references from citing section to cited target section.
edges.parquet	source_section / target_section / citation_count	VARCHAR / INT64	Canonical section numbers and frequency count of cross-references between the pair.

Complete 53-Title Inventory (United States Code)

Breakdown of chapters and statutory sections across all 53 active Titles in the October 2026 edition (Title 53 is reserved).

Title	Title Heading	Chapters	Sections
Title 1	General Provisions	3	39
Title 2	The Congress	54	1,612
Title 3	The President	5	64
Title 4	Flag and Seal, Seat of Government, and the States	5	47
Title 5	Government Organization and Employees	63	1,161
Title 6	Domestic Security	6	569
Title 7	Agriculture	130	2,926
Title 8	Aliens and Nationality	16	376
Title 9	Arbitration	4	33
Title 10	Armed Forces	343	4,031
Title 11	Bankruptcy	9	280
Title 12	Banks and Banking	62	1,999
Title 13	Census	6	70
Title 14	Coast Guard	17	449
Title 15	Commerce and Trade	153	2,701
Title 16	Conservation	154	5,101
Title 17	Copyrights	15	153
Title 18	Crimes and Criminal Procedure	141	1,399
Title 19	Customs Duties	30	1,111
Title 20	Education	86	2,029
Title 21	Food and Drugs	31	757
Title 22	Foreign Relations and Intercourse	129	3,492
Title 23	Highways	6	172
Title 24	Hospitals and Asylums	11	162
Title 25	Indians	58	2,399
Title 26	Internal Revenue Code	72	2,162
Title 27	Intoxicating Liquors	10	45
Title 28	Judiciary and Judicial Procedure	77	805
Title 29	Labor	36	844
Title 30	Mineral Lands and Mining	34	626
Title 31	Money and Finance	31	498
Title 32	National Guard	5	78
Title 33	Navigation and Navigable Waters	57	1,569
Title 34	Crime Control and Law Enforcement	36	795
Title 35	Patents	25	175
Title 36	Patriotic and National Observances, Ceremonies, and Organizations	106	1,173
Title 37	Pay and Allowances of the Uniformed Services	12	234
Title 38	Veterans' Benefits	47	1,197
Title 39	Postal Service	22	181
Title 40	Public Buildings, Property, and Works	45	458
Title 41	Public Contracts	27	241
Title 42	The Public Health and Welfare	196	8,482
Title 43	Public Lands	59	1,464
Title 44	Public Printing and Documents	23	356
Title 45	Railroads	22	294
Title 46	Shipping	108	1,032
Title 47	Telecommunications	16	432
Title 48	Territories and Insular Possessions	21	661
Title 49	Transportation	113	1,371
Title 50	War and National Defense	62	1,360
Title 51	National and Commercial Space Programs	35	249
Title 52	Voting and Elections	10	171
Title 54	National Park Service and Related Programs	54	366
Total (53 Titles)	Complete United States Code (U.S.C.) Corpus	2,898	60,451