Pith Number

pith:YQHZ7V45

pith:2015:YQHZ7V45K7Q76VND6CY4TY532B

not attested not anchored not stored refs pending

Is the semi-regular variable RU Vulpeculae undergoing a helium-shell flash?

(2) Institut f\"ur Physik, (3) AAVSO, Austria, Cambridge, Department of Astrophysics, Graz, MA, M. Templeton (3) ((1) University of Vienna, R. Greimel (2), S. Uttenthaler (1), Universit\"at Graz, USA), Vienna

arxiv:1511.03224 v1 · 2015-11-10 · 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{YQHZ7V45K7Q76VND6CY4TY532B}

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	2026-05-18T01:19:01.698070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c40f9fd79d57e1ff55a3f0b1c9e3bbd056efc0714d1c99ff43ed4a46a5506260

Aliases

arxiv: 1511.03224 · arxiv_version: 1511.03224v1 · doi: 10.48550/arxiv.1511.03224 · pith_short_12: YQHZ7V45K7Q7 · pith_short_16: YQHZ7V45K7Q76VND · pith_short_8: YQHZ7V45

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/YQHZ7V45K7Q76VND6CY4TY532B \
  | 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: c40f9fd79d57e1ff55a3f0b1c9e3bbd056efc0714d1c99ff43ed4a46a5506260

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0be073cb7b673d182429ee7b10aa00afc1371fc9ccffc8c67d1ec68951b536c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-11-10T18:48:56Z",
    "title_canon_sha256": "29cefd9ddadbd48977e875346c3076e98302b00dbae955bdb4eac309f332f5e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03224",
    "kind": "arxiv",
    "version": 1
  }
}