Pith Number

pith:3O5EEKGV

pith:2009:3O5EEKGVV2VHSSX74EXP2ALAPR

not attested not anchored not stored refs pending

The Reconstruction of Science Phylogeny

David Chavalarias, Jean-Philippe Cointet

arxiv:0904.3154 v3 · 2009-04-21 · physics.soc-ph · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3O5EEKGVV2VHSSX74EXP2ALAPR}

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	2026-05-18T02:24:55.970678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbba4228d5aeaa794affe12efd01607c4a6c020a75e293c82d2495d3388a277a

Aliases

arxiv: 0904.3154 · arxiv_version: 0904.3154v3 · doi: 10.48550/arxiv.0904.3154 · pith_short_12: 3O5EEKGVV2VH · pith_short_16: 3O5EEKGVV2VHSSX7 · pith_short_8: 3O5EEKGV

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/3O5EEKGVV2VHSSX74EXP2ALAPR \
  | 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: dbba4228d5aeaa794affe12efd01607c4a6c020a75e293c82d2495d3388a277a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ce44db0b329cc8afc322ef8f7937f276b394d117b1f7af90c4abfbcd4f701f2",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2009-04-21T12:39:00Z",
    "title_canon_sha256": "a2c6df7951585719adc109b1cc5f1a9d55a9c33666e83718cfa49b31d52486bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3154",
    "kind": "arxiv",
    "version": 3
  }
}