Pith Number

pith:RB662X3Z

pith:2018:RB662X3ZXSEJE3VD643TU4O3VO

not attested not anchored not stored refs pending

Phrase-Indexed Question Answering: A New Challenge for Scalable Document Comprehension

Ali Farhadi, Ankur P. Parikh, Hannaneh Hajishirzi, Minjoon Seo, Tom Kwiatkowski

arxiv:1804.07726 v2 · 2018-04-20 · 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{RB662X3ZXSEJE3VD643TU4O3VO}

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.

Receipt and verification

First computed	2026-05-18T00:04:44.859840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

887ded5f79bc88926ea3f7373a71dbab86c3ad4d5f7725663419a8798b1901fd

Aliases

arxiv: 1804.07726 · arxiv_version: 1804.07726v2 · doi: 10.48550/arxiv.1804.07726 · pith_short_12: RB662X3ZXSEJ · pith_short_16: RB662X3ZXSEJE3VD · pith_short_8: RB662X3Z

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/RB662X3ZXSEJE3VD643TU4O3VO \
  | 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: 887ded5f79bc88926ea3f7373a71dbab86c3ad4d5f7725663419a8798b1901fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bbb60ef7434c66df8c533caa69c1ed0fdea02dbfe33fd9e9d5df703528f1fd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-04-20T17:05:03Z",
    "title_canon_sha256": "8b8b43b72e70e0613b9f3314a14df04ed4451191a25d5783ca0e0bfaf6e41fb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07726",
    "kind": "arxiv",
    "version": 2
  }
}