Pith Number

pith:IZBAS5TX

pith:2009:IZBAS5TXVSS25DWGSMLIOCGO25

not attested not anchored not stored refs pending

The Dependency of the Cepheid Period-Luminosity Relation on Chemical Composition

B. Lemasle, C.D. Laney, F. Primas, G. Bono, M.A.T. Groenewegen, M. Mottini, M. Romaniello, P. Francois, S. Pedicelli

arxiv:0907.3655 v2 · 2009-07-21 · astro-ph.SR · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZBAS5TXVSS25DWGSMLIOCGO25}

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	2026-05-18T02:12:55.007511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4642097677aca5ae8ec693168708ced74c8b67f3b6c22fb0fbbe12b853a429d6

Aliases

arxiv: 0907.3655 · arxiv_version: 0907.3655v2 · doi: 10.48550/arxiv.0907.3655 · pith_short_12: IZBAS5TXVSS2 · pith_short_16: IZBAS5TXVSS25DWG · pith_short_8: IZBAS5TX

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/IZBAS5TXVSS25DWGSMLIOCGO25 \
  | 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: 4642097677aca5ae8ec693168708ced74c8b67f3b6c22fb0fbbe12b853a429d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "175487a519b6d3f95b6b600004b1ee6f1e8b6388ced5f16a0e8a5872e623cc10",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-21T13:43:14Z",
    "title_canon_sha256": "319d7d38fb32cdfaa09fe88c51bddc5fcefd1dbf753d74456eab19d7afaaf623"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3655",
    "kind": "arxiv",
    "version": 2
  }
}