Pith Number

pith:G7GOI5FT

pith:2009:G7GOI5FT4K2WYAO4XUSDFEOMNS

not attested not anchored not stored refs pending

Finite-size effects in the dependency networks of free and open-source software

Arnab K. Ray, G. Nagarjuna, Rajiv Nair

arxiv:0901.4904 v4 · 2009-01-30 · cs.OH · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G7GOI5FT4K2WYAO4XUSDFEOMNS}

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	2026-05-18T02:54:21.965263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37cce474b3e2b56c01dcbd243291cc6cbfe9567d8901a827e7578188de5a4aa7

Aliases

arxiv: 0901.4904 · arxiv_version: 0901.4904v4 · doi: 10.48550/arxiv.0901.4904 · pith_short_12: G7GOI5FT4K2W · pith_short_16: G7GOI5FT4K2WYAO4 · pith_short_8: G7GOI5FT

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/G7GOI5FT4K2WYAO4XUSDFEOMNS \
  | 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: 37cce474b3e2b56c01dcbd243291cc6cbfe9567d8901a827e7578188de5a4aa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87b623d8f71277d8e6dcbeb709f222546aa953e8927f44da2df126f67cdce60f",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.OH",
    "submitted_at": "2009-01-30T15:17:20Z",
    "title_canon_sha256": "86098cde2e90f7895d0e9043d2cd867acaa04017c61631fd224427e2daf50e03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4904",
    "kind": "arxiv",
    "version": 4
  }
}