Pith Number

pith:ZZPA4LOK

pith:2013:ZZPA4LOKOVJWR2OCYGFWL75SKH

not attested not anchored not stored refs pending

Question Answering Against Very-Large Text Collections

Ben Solway, Jun Wang, Leon Derczynski, Richard Shaw

arxiv:1304.7157 v1 · 2013-04-26 · cs.CL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZZPA4LOKOVJWR2OCYGFWL75SKH}

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	2026-05-18T03:27:02.454610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce5e0e2dca755368e9c2c18b65ffb251df6367bc15699f15cb9a3e9a2bb0bdb0

Aliases

arxiv: 1304.7157 · arxiv_version: 1304.7157v1 · doi: 10.48550/arxiv.1304.7157 · pith_short_12: ZZPA4LOKOVJW · pith_short_16: ZZPA4LOKOVJWR2OC · pith_short_8: ZZPA4LOK

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/ZZPA4LOKOVJWR2OCYGFWL75SKH \
  | 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: ce5e0e2dca755368e9c2c18b65ffb251df6367bc15699f15cb9a3e9a2bb0bdb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dcac66fd1a1dd249b096cc5518eb11cd357e840dab1ffae3195b070842e9289",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2013-04-26T13:27:19Z",
    "title_canon_sha256": "83d3e14988e929ea978d08cda80fb8de8c2310db39f873ac906eb91ac399b4de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7157",
    "kind": "arxiv",
    "version": 1
  }
}