Pith Number

pith:FGX565FX

pith:2008:FGX565FXS2QYAH2K5WEE7DDW34

not attested not anchored not stored refs pending

El Roque de Los Muchachos Site Characteristics. III. Analysis of Atmospheric Dust and Aerosol Extinction

A. Ghedina, G. Lombardi, M. Pedani, S. Ortolani, V. Zitelli

arxiv:0802.3947 v2 · 2008-02-27 · astro-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{FGX565FXS2QYAH2K5WEE7DDW34}

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	2026-07-04T17:09:35.599165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29afdf74b796a1801f4aed884f8c76df3f80f21e92323a904c7ff5fc9ab5f34f

Aliases

arxiv: 0802.3947 · arxiv_version: 0802.3947v2 · doi: 10.48550/arxiv.0802.3947 · pith_short_12: FGX565FXS2QY · pith_short_16: FGX565FXS2QYAH2K · pith_short_8: FGX565FX

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/FGX565FXS2QYAH2K5WEE7DDW34 \
  | 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: 29afdf74b796a1801f4aed884f8c76df3f80f21e92323a904c7ff5fc9ab5f34f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed8df774c7c64e09afb53a4aa700e4c6ba6bce0d1cc3bb8655f5f2119e1f1646",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-02-27T03:39:31Z",
    "title_canon_sha256": "1f58403f7a09089401da6f220088f61aa6f3e274b579c8aca9d2669b80aa0fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.3947",
    "kind": "arxiv",
    "version": 2
  }
}