Pith Number

pith:2PJKFAMG

pith:2011:2PJKFAMG3GDKL74OMULJQ623TF

not attested not anchored not stored refs pending

Paper Productivity of Ground-based Large Optical Telescopes from 2000 to 2009

Sang Chul Kim (KASI)

arxiv:1107.0353 v1 · 2011-07-02 · 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{2PJKFAMG3GDKL74OMULJQ623TF}

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	2026-05-18T02:01:25.658864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3d2a28186d986a5ff8e6516987b5b994a5a900f1baa6d200e49fc8e2020ed6a

Aliases

arxiv: 1107.0353 · arxiv_version: 1107.0353v1 · doi: 10.48550/arxiv.1107.0353 · pith_short_12: 2PJKFAMG3GDK · pith_short_16: 2PJKFAMG3GDKL74O · pith_short_8: 2PJKFAMG

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/2PJKFAMG3GDKL74OMULJQ623TF \
  | 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: d3d2a28186d986a5ff8e6516987b5b994a5a900f1baa6d200e49fc8e2020ed6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9760a8f494415d5001ad8590febf9ce54a6288cc35e5966162aa48b6117517c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-07-02T02:27:16Z",
    "title_canon_sha256": "29649a9a1bcdf8ff3a7743052a74fc55113e07ac90d19f6195c85b654f544fee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0353",
    "kind": "arxiv",
    "version": 1
  }
}