Pith Number

pith:LQVGFGEQ

pith:2013:LQVGFGEQK5VAEV4Y2TKZH4B2MX

not attested not anchored not stored refs pending

What is an Observatory? The Crucial Role of Such Organizations for Maximizing the Science Return from Astronomy Research Facilities

Garth Illingworth

arxiv:1304.1017 v2 · 2013-04-01 · 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{LQVGFGEQK5VAEV4Y2TKZH4B2MX}

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	2026-05-18T00:51:07.744376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c2a629890576a025798d4d593f03a65d63fc5621607b60f798edf6e408d6726

Aliases

arxiv: 1304.1017 · arxiv_version: 1304.1017v2 · doi: 10.48550/arxiv.1304.1017 · pith_short_12: LQVGFGEQK5VA · pith_short_16: LQVGFGEQK5VAEV4Y · pith_short_8: LQVGFGEQ

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/LQVGFGEQK5VAEV4Y2TKZH4B2MX \
  | 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: 5c2a629890576a025798d4d593f03a65d63fc5621607b60f798edf6e408d6726

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2db41079e9783a6d891388416266f067e589613fbcebffa649129c118c4d0bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-04-01T20:00:03Z",
    "title_canon_sha256": "5cc762cc5781653537508ca83e19c15355e25e9f7406f46319171a115dd6b703"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1017",
    "kind": "arxiv",
    "version": 2
  }
}