Pith Number

pith:M2PEY5LS

pith:2019:M2PEY5LSN6PVKM6HJK6UXYGZ25

not attested not anchored not stored refs pending

An Empirical Analysis of the Python Package Index (PyPI)

Ethan Bommarito, Michael Bommarito

arxiv:1907.11073 v2 · 2019-07-25 · cs.SE · cs.CY · 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{M2PEY5LSN6PVKM6HJK6UXYGZ25}

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.

Cited by

2 papers in Pith

Model Context Protocol (MCP) at First Glance: Studying the Security and Maintainability of MCP Servers

Analyzing the Availability of E-Mail Addresses for PyPI Libraries

Receipt and verification

First computed	2026-05-17T23:39:29.772923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

669e4c75726f9f5533c74abd4be0d9d773eea404528cd3747feb1b7535893343

Aliases

arxiv: 1907.11073 · arxiv_version: 1907.11073v2 · doi: 10.48550/arxiv.1907.11073 · pith_short_12: M2PEY5LSN6PV · pith_short_16: M2PEY5LSN6PVKM6H · pith_short_8: M2PEY5LS

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/M2PEY5LSN6PVKM6HJK6UXYGZ25 \
  | 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: 669e4c75726f9f5533c74abd4be0d9d773eea404528cd3747feb1b7535893343

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9459cb340298101156f0acd2dbddb7945cf2c4c5c772afe80cfd55326451b418",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-07-25T14:11:32Z",
    "title_canon_sha256": "f94de0223007ee5e0f1f01612971358d4875b5a537719be60e794f5d94f117d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.11073",
    "kind": "arxiv",
    "version": 2
  }
}