Pith Number

pith:T2YLTW3M

pith:2018:T2YLTW3MYHNZNODUG6TBNDF6LJ

not attested not anchored not stored refs pending

The True Luminosities of Planetary Nebulae in M31's Bulge: Massive Central Stars from an Old Stellar Population

Briana L. Indahl, Brian D. Davis, George H. Jacoby, John. J. Feldmeier, Robin Ciardullo

arxiv:1807.05279 v2 · 2018-07-13 · 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{T2YLTW3MYHNZNODUG6TBNDF6LJ}

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	2026-05-18T00:07:23.293525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9eb0b9db6cc1db96b87437a6168cbe5a5dd95296889ec241e4134405919f061a

Aliases

arxiv: 1807.05279 · arxiv_version: 1807.05279v2 · doi: 10.48550/arxiv.1807.05279 · pith_short_12: T2YLTW3MYHNZ · pith_short_16: T2YLTW3MYHNZNODU · pith_short_8: T2YLTW3M

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/T2YLTW3MYHNZNODUG6TBNDF6LJ \
  | 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: 9eb0b9db6cc1db96b87437a6168cbe5a5dd95296889ec241e4134405919f061a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6be7d396e44bf974cc69f76d48548734cdafeb8f88f879049544d818271b0fc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-13T20:51:22Z",
    "title_canon_sha256": "7739abe00a508e95a98706f311b520de3bd2011719e45cdbf0eb97d3f5a4db19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05279",
    "kind": "arxiv",
    "version": 2
  }
}