Pith Number

pith:CJJKF664

pith:2009:CJJKF6642LEG5R65NI2XWYHLI7

not attested not anchored not stored refs pending

The astroclimatological comparison of the Paranal Observatory and El Roque de Los Muchachos Observatory

Gianluca Lombardi, Sergio Ortolani, Valentina Zitelli

arxiv:0906.5113 v1 · 2009-06-28 · 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{CJJKF6642LEG5R65NI2XWYHLI7}

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	2026-05-18T02:13:12.199703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1252a2fbdcd2c86ec7dd6a357b60eb47ecb4157328a8e9de0e93bf69e1d1e74a

Aliases

arxiv: 0906.5113 · arxiv_version: 0906.5113v1 · doi: 10.48550/arxiv.0906.5113 · pith_short_12: CJJKF6642LEG · pith_short_16: CJJKF6642LEG5R65 · pith_short_8: CJJKF664

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/CJJKF6642LEG5R65NI2XWYHLI7 \
  | 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: 1252a2fbdcd2c86ec7dd6a357b60eb47ecb4157328a8e9de0e93bf69e1d1e74a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1179fab5797dbd6ecdadfef7e485ec48de689bf3ce1699cdd1e3b4d4aa48c8e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-06-28T02:21:58Z",
    "title_canon_sha256": "d93e3b776495f44fc89b0827b4d4cd4849ff3fa60fecf71847d53e1ea36a8dbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.5113",
    "kind": "arxiv",
    "version": 1
  }
}