Pith Number

pith:4Y57VJRG

pith:2013:4Y57VJRGVNRX5XAB2IMMVBHSMJ

not attested not anchored not stored refs pending

A palace for astronomy in Buenos Aires

Alejandro Gangui

arxiv:1304.6439 v1 · 2013-04-23 · physics.hist-ph · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4Y57VJRGVNRX5XAB2IMMVBHSMJ}

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	2026-05-18T00:05:08.270285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e63bfaa626ab637edc01d218ca84f262630231e668ff7755d7b180b1e687c711

Aliases

arxiv: 1304.6439 · arxiv_version: 1304.6439v1 · doi: 10.48550/arxiv.1304.6439 · pith_short_12: 4Y57VJRGVNRX · pith_short_16: 4Y57VJRGVNRX5XAB · pith_short_8: 4Y57VJRG

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/4Y57VJRGVNRX5XAB2IMMVBHSMJ \
  | 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: e63bfaa626ab637edc01d218ca84f262630231e668ff7755d7b180b1e687c711

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5efc5739d567be26871f431904637757d4bd1b3a78b9bd54ca9389de926ee215",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2013-04-23T22:59:53Z",
    "title_canon_sha256": "b959611d0e9f5d48d51f48f9f7363483ce4160879ceea9dc63694232d808633c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6439",
    "kind": "arxiv",
    "version": 1
  }
}