Pith Number

pith:MFDD7EWP

pith:2011:MFDD7EWP5U5J4TFQRHYQFULLVC

not attested not anchored not stored refs pending

Evolution of a Modular Software Network

Juan A. Bonachela, Miguel A. Fortuna, Simon A. Levin

arxiv:1111.5251 v1 · 2011-11-22 · cs.OS · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MFDD7EWP5U5J4TFQRHYQFULLVC}

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	2026-05-18T01:59:26.771972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61463f92cfed3a9e4cb089f102d16ba88567e59d3796858c41aacac1d6caf09c

Aliases

arxiv: 1111.5251 · arxiv_version: 1111.5251v1 · doi: 10.48550/arxiv.1111.5251 · pith_short_12: MFDD7EWP5U5J · pith_short_16: MFDD7EWP5U5J4TFQ · pith_short_8: MFDD7EWP

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/MFDD7EWP5U5J4TFQRHYQFULLVC \
  | 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: 61463f92cfed3a9e4cb089f102d16ba88567e59d3796858c41aacac1d6caf09c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c45f152507fec21e8f9ec0d4c2d3c4838403eaef617b99bb146d1a772225463",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.OS",
    "submitted_at": "2011-11-22T17:00:50Z",
    "title_canon_sha256": "90a4906f682955fb3e61359e3280870ce57020474e3dc58b65461557a382978a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5251",
    "kind": "arxiv",
    "version": 1
  }
}