Pith Number

pith:7Y2RL7TM

pith:2019:7Y2RL7TMHPNCP2O7OBLOOTZMKO

not attested not anchored not stored refs pending

Memory limitations are hidden in grammar

Carlos G\'omez-Rodr\'iguez, Morten H. Christiansen, Ramon Ferrer-i-Cancho

arxiv:1908.06629 v3 · 2019-08-19 · cs.CL · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Y2RL7TMHPNCP2O7OBLOOTZMKO}

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	2026-07-05T04:59:36.903022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe3515fe6c3bda27e9df7056e74f2c538292e458a1fd0a9bd2736698289db14a

Aliases

arxiv: 1908.06629 · arxiv_version: 1908.06629v3 · doi: 10.48550/arxiv.1908.06629 · pith_short_12: 7Y2RL7TMHPNC · pith_short_16: 7Y2RL7TMHPNCP2O7 · pith_short_8: 7Y2RL7TM

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/7Y2RL7TMHPNCP2O7OBLOOTZMKO \
  | 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: fe3515fe6c3bda27e9df7056e74f2c538292e458a1fd0a9bd2736698289db14a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88f5cab3b0d930ff0c1032b1d433a9120d2d66373c0997190ebc5119653d6179",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-08-19T07:56:46Z",
    "title_canon_sha256": "de89ebc050b5c7ea22dea806077e5d57544a7f58c07c5b187fecba0acc88d0e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06629",
    "kind": "arxiv",
    "version": 3
  }
}