Pith Number

pith:NAOVRXFM

pith:2020:NAOVRXFM4ESOGQ4JDXCMZZAWDI

not attested not anchored not stored refs pending

Scalable Methods for Calculating Term Co-Occurrence Frequencies

Bodo Billerbeck, Justin Zobel, Nicholas Lester, Nick Craswell

arxiv:2007.08709 v1 · 2020-07-17 · 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{NAOVRXFM4ESOGQ4JDXCMZZAWDI}

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	2026-07-05T01:19:56.469481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

681d58dcace124e343891dc4cce4161a37ebd4bec44787a35b2e4ab0b93b3b5c

Aliases

arxiv: 2007.08709 · arxiv_version: 2007.08709v1 · doi: 10.48550/arxiv.2007.08709 · pith_short_12: NAOVRXFM4ESO · pith_short_16: NAOVRXFM4ESOGQ4J · pith_short_8: NAOVRXFM

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/NAOVRXFM4ESOGQ4JDXCMZZAWDI \
  | 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: 681d58dcace124e343891dc4cce4161a37ebd4bec44787a35b2e4ab0b93b3b5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e70291ec8b8847f6ecd384b85ecf85b2807523d0183f2e2fcf1fa084387702b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-07-17T01:21:40Z",
    "title_canon_sha256": "360ece59a4f659b3278ef32eac4444af8ce3ed734cbc992430341e347edba74d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.08709",
    "kind": "arxiv",
    "version": 1
  }
}