Pith Number

pith:4HVGU6JD

pith:2015:4HVGU6JDAROHY2BAYDCZ3LXKHL

not attested not anchored not stored refs pending

Revealing {\delta} Cephei's Secret Companion and Intriguing Past

Berry Holl, Johannes Sahlmann, Laurent Eyer, Lovro Palaversa, Maria S\"uveges, Maroussia Roelens, Nami Mowlavi, Richard I. Anderson

arxiv:1503.04116 v1 · 2015-03-13 · 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{4HVGU6JDAROHY2BAYDCZ3LXKHL}

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	2026-05-18T02:03:33.810129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1ea6a7923045c7c6820c0c59daeea3ac4c8cf7fa81e68e34a08e3a6c37238f8

Aliases

arxiv: 1503.04116 · arxiv_version: 1503.04116v1 · doi: 10.48550/arxiv.1503.04116 · pith_short_12: 4HVGU6JDAROH · pith_short_16: 4HVGU6JDAROHY2BA · pith_short_8: 4HVGU6JD

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/4HVGU6JDAROHY2BAYDCZ3LXKHL \
  | 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: e1ea6a7923045c7c6820c0c59daeea3ac4c8cf7fa81e68e34a08e3a6c37238f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcb0c4af54e92daedd02032c0822dd0f408c2b32f04d6605c60c65e1752158d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-03-13T15:46:25Z",
    "title_canon_sha256": "ebe0d86d8d24f95f71307c7da12f55a65701b1cba159e1484995c160d63b1e7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04116",
    "kind": "arxiv",
    "version": 1
  }
}