Pith Number

pith:FQQF5YWQ

pith:2015:FQQF5YWQAP5Z65BRBQOEUUKTXD

not attested not anchored not stored refs pending

The Carina Project IX: on Hydrogen and helium burning variables

A. R. Walker, F. Th\'evenin, G. Bono, G. Coppola, G. Fiorentino, G. Iannicola, I. Ferraro, I. Musella, M. Dall'Ora, M. Fabrizio, M. Marconi, M. Monelli, M. Nonino, P. B. Stetson, R. Buonanno, V. F. Braga, V. Ripepi

arxiv:1509.02687 v1 · 2015-09-09 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQQF5YWQAP5Z65BRBQOEUUKTXD}

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	2026-05-18T01:33:26.075671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c205ee2d003fb9f74310c1c4a5153b8e5022622a64dc70c2ec45a960897ac1c

Aliases

arxiv: 1509.02687 · arxiv_version: 1509.02687v1 · doi: 10.48550/arxiv.1509.02687 · pith_short_12: FQQF5YWQAP5Z · pith_short_16: FQQF5YWQAP5Z65BR · pith_short_8: FQQF5YWQ

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/FQQF5YWQAP5Z65BRBQOEUUKTXD \
  | 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: 2c205ee2d003fb9f74310c1c4a5153b8e5022622a64dc70c2ec45a960897ac1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c691e29623c761902695ca97f7c5fd4727f2b658c79d7640c58ab0045229dde",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-09-09T09:16:20Z",
    "title_canon_sha256": "14a0e37c7d20073f864d8b90a36b54b7aa6f4a1fe228f85713e8df1672b8a0e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02687",
    "kind": "arxiv",
    "version": 1
  }
}