Pith Number

pith:CTNUDXVA

pith:2011:CTNUDXVAOV7EHPEXBPTIA63MZG

not attested not anchored not stored refs pending

An Improved Metallicity Calibration with UBV Photometry

B. Coskunoglu, E. Yaz, S. Ak, S. Bilir, S. Karaali

arxiv:1102.1991 v1 · 2011-02-09 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CTNUDXVAOV7EHPEXBPTIA63MZG}

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	2026-05-18T02:03:14.614652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14db41dea0757e43bc970be6807b6cc99f7e2a3f933ebd658392436a163d808b

Aliases

arxiv: 1102.1991 · arxiv_version: 1102.1991v1 · doi: 10.48550/arxiv.1102.1991 · pith_short_12: CTNUDXVAOV7E · pith_short_16: CTNUDXVAOV7EHPEX · pith_short_8: CTNUDXVA

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/CTNUDXVAOV7EHPEXBPTIA63MZG \
  | 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: 14db41dea0757e43bc970be6807b6cc99f7e2a3f933ebd658392436a163d808b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5772767750dd22157b8a7857eb04c7253e2d0b815a82b340239cfeeef0c791a3",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-02-09T21:45:46Z",
    "title_canon_sha256": "6525a073ef9d0c114bd9bf98915cd4bcc31eb932a54360877bb91afc0b20184b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1991",
    "kind": "arxiv",
    "version": 1
  }
}