Pith Number

pith:S7QBEZN2

pith:2025:S7QBEZN2N2C4ISP4STCCKAUBO6

not attested not anchored not stored refs pending

Incorporating Legal Structure in Retrieval-Augmented Generation: A Case Study on Copyright Fair Use

Alexandra Colby, Justin Ho, William Fisher

arxiv:2505.02164 v1 · 2025-05-04 · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S7QBEZN2N2C4ISP4STCCKAUBO6}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

2 papers in Pith

An Ontology-Driven Graph RAG for Legal Norms: A Structural, Temporal, and Deterministic Approach

Temporal Decay of Co-Citation Predictability: A 20-Year Statute Retrieval Benchmark from 396M Ukrainian Court Citations

Receipt and verification

First computed	2026-07-05T10:58:33.026418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97e01265ba6e85c449fc94c4250281778a5939a80892586b68d52adb2bcb043a

Aliases

arxiv: 2505.02164 · arxiv_version: 2505.02164v1 · doi: 10.48550/arxiv.2505.02164 · pith_short_12: S7QBEZN2N2C4 · pith_short_16: S7QBEZN2N2C4ISP4 · pith_short_8: S7QBEZN2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/S7QBEZN2N2C4ISP4STCCKAUBO6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 97e01265ba6e85c449fc94c4250281778a5939a80892586b68d52adb2bcb043a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c73189117708b869ed11ad54acc4836c86e7d65b352ac2ca679c558b5d7b863",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-05-04T15:53:49Z",
    "title_canon_sha256": "c270e1aa84b99f846472a85f6ddc0c6ffc6c0cb38d33f36552c2fbb0138b2257"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.02164",
    "kind": "arxiv",
    "version": 1
  }
}