Pith Number

pith:IOEE2QFX

pith:2015:IOEE2QFXOARINHKXZDGVTR5T57

not attested not anchored not stored refs pending

Panchromatic Hubble Andromeda Treasury XIII: The Cepheid period-luminosity relation in M31

A. Dolphin, A. Sarajedini, B. F. Williams, J. J. Dalcanton, R. Wagner-Kaiser

arxiv:1504.05118 v2 · 2015-04-20 · 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{IOEE2QFXOARINHKXZDGVTR5T57}

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	2026-05-18T01:35:48.467499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43884d40b77022869d57c8cd59c7b3efd30901e2812391cbd453b8e8f30185ec

Aliases

arxiv: 1504.05118 · arxiv_version: 1504.05118v2 · doi: 10.48550/arxiv.1504.05118 · pith_short_12: IOEE2QFXOARI · pith_short_16: IOEE2QFXOARINHKX · pith_short_8: IOEE2QFX

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/IOEE2QFXOARINHKXZDGVTR5T57 \
  | 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: 43884d40b77022869d57c8cd59c7b3efd30901e2812391cbd453b8e8f30185ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e058c11ee2b83089bf0e3d9aae87b151349e66d55da7ef53b72fb49125ce2952",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-20T16:50:12Z",
    "title_canon_sha256": "d041ff6aa691c164a99b35f6bd52b7f5fe9016314d15731efc9e504945031682"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05118",
    "kind": "arxiv",
    "version": 2
  }
}