Pith Number

pith:D2JFUKE7

pith:2007:D2JFUKE7SDUXMHEKCMWQ2Z4H2D

not attested not anchored not stored refs pending

Six New ZZ Ceti Stars from the SPY and the HQS Surveys

B. Voss, D. Homeier, D. Koester, D. Reimers, R. Napiwotzki, R. {\O}stensen

arxiv:0704.2710 v1 · 2007-04-20 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D2JFUKE7SDUXMHEKCMWQ2Z4H2D}

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	2026-07-04T15:01:00.071870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e925a289f90e9761c8a132d0d6787d0d54cfcb866193c864937871acc5494c9

Aliases

arxiv: 0704.2710 · arxiv_version: 0704.2710v1 · doi: 10.48550/arxiv.0704.2710 · pith_short_12: D2JFUKE7SDUX · pith_short_16: D2JFUKE7SDUXMHEK · pith_short_8: D2JFUKE7

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/D2JFUKE7SDUXMHEKCMWQ2Z4H2D \
  | 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: 1e925a289f90e9761c8a132d0d6787d0d54cfcb866193c864937871acc5494c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d60c4af02bcf59499df38b0d6af87833563323375d7612d499b7eeac31d38000",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-20T13:33:56Z",
    "title_canon_sha256": "035204503baad4027f72f82307b33092b92f6bfb5d3fbdd8f880fecfed4a9e09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2710",
    "kind": "arxiv",
    "version": 1
  }
}