Pith Number

pith:GUHEKUPD

pith:2009:GUHEKUPDK62YKAYC3L2YQIQD2Q

not attested not anchored not stored refs pending

Cyclic variability of the circumstellar disk of the Be star zetaTau - I. Long-term monitoring observations

A.C. Carciofi, A.T. Okazaki, C.A. Hummel, D. Baade, E. Hesselbach, E. Pollmann, F. Rantakyr\"o, J.B. LeBouquin, J.P. Wisniewski, K.S. Bjorkman, S. Stefl, Th. Rivinius

arxiv:0907.2250 v1 · 2009-07-13 · 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{GUHEKUPDK62YKAYC3L2YQIQD2Q}

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	2026-05-18T02:13:03.389243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

350e4551e357b5850302daf5882203d438185fc32bd27a6ff2415f0058f7c743

Aliases

arxiv: 0907.2250 · arxiv_version: 0907.2250v1 · doi: 10.48550/arxiv.0907.2250 · pith_short_12: GUHEKUPDK62Y · pith_short_16: GUHEKUPDK62YKAYC · pith_short_8: GUHEKUPD

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/GUHEKUPDK62YKAYC3L2YQIQD2Q \
  | 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: 350e4551e357b5850302daf5882203d438185fc32bd27a6ff2415f0058f7c743

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26ea9ee9845b666621352d8af5fab54c2b506d6f24a7af6b24c122a911f33395",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-13T20:09:37Z",
    "title_canon_sha256": "a6e80c6090e8c510dcca0bd431bae8c11f43653570a1751af72672c8d72d9b9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2250",
    "kind": "arxiv",
    "version": 1
  }
}