Pith Number

pith:J7AEZNVU

pith:2018:J7AEZNVU2BZOGEWWICWFNMX4Y3

not attested not anchored not stored refs pending

Cepheids in M31 - The PAndromeda Cepheid sample

Arno Riffeser, Chien-Hsiu Lee, Christian Obermeier, Claus Goessl, Jan Snigula, J. L. Tonry, Johannes Koppenhoefer, K. W. Hodapp, Mihael Kodric, N. Kaiser, N. Metcalfe, P. W. Draper, Ralf Bender, R. J. Wainscoat, R.-P. Kudritzki, Stella Seitz, Ulrich Hopp, W. S. Burgett

arxiv:1806.07895 v1 · 2018-06-20 · 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{J7AEZNVU2BZOGEWWICWFNMX4Y3}

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	2026-05-18T00:06:39.438229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fc04cb6b4d072e312d640ac56b2fcc6c26fc8ad44082f2c792f8e1eafecb182

Aliases

arxiv: 1806.07895 · arxiv_version: 1806.07895v1 · doi: 10.48550/arxiv.1806.07895 · pith_short_12: J7AEZNVU2BZO · pith_short_16: J7AEZNVU2BZOGEWW · pith_short_8: J7AEZNVU

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/J7AEZNVU2BZOGEWWICWFNMX4Y3 \
  | 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: 4fc04cb6b4d072e312d640ac56b2fcc6c26fc8ad44082f2c792f8e1eafecb182

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5430d3dc2332d540fc4c07ee61cac140ee3351aad146d68436e1508152865edb",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-06-20T18:00:01Z",
    "title_canon_sha256": "c28440ffc803563412b142ca31c57fb1e27ac07157af6ebd62a88d2fd518d2d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07895",
    "kind": "arxiv",
    "version": 1
  }
}