Pith Number

pith:VSAMI45I

pith:2019:VSAMI45ILTKBX7L2J5XCQVY2AT

not attested not anchored not stored refs pending

A BERT Baseline for the Natural Questions

Chris Alberti, Kenton Lee, Michael Collins

arxiv:1901.08634 v3 · 2019-01-24 · 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{VSAMI45ILTKBX7L2J5XCQVY2AT}

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

1 paper in Pith

Humanity's Last Exam

Receipt and verification

First computed	2026-07-05T00:24:36.521571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac80c473a85cd41bfd7a4f6e28571a04f450ebb02e544f6986668cc0a44d3f70

Aliases

arxiv: 1901.08634 · arxiv_version: 1901.08634v3 · doi: 10.48550/arxiv.1901.08634 · pith_short_12: VSAMI45ILTKB · pith_short_16: VSAMI45ILTKBX7L2 · pith_short_8: VSAMI45I

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/VSAMI45ILTKBX7L2J5XCQVY2AT \
  | 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: ac80c473a85cd41bfd7a4f6e28571a04f450ebb02e544f6986668cc0a44d3f70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b527fcc8d7346d1003007a1fd4b46f51ae78df73f7edf6f1ac49426ef4acb91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-01-24T20:22:14Z",
    "title_canon_sha256": "4af2cbe62183f2e1fb3737fc7665e99285b5e7c135d1973d8d52d28fcd07197f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08634",
    "kind": "arxiv",
    "version": 3
  }
}