Pith Number

pith:PX7RHIDW

pith:2000:PX7RHIDWTUFICQ67FU5RP5BFXF

not attested not anchored not stored refs pending

On the late spectral types of cataclysmic variable secondaries

I. Baraffe (Ecole Normale Superieure de Lyon), U. Kolb (The Open University)

arxiv:astro-ph/0004310 v1 · 2000-04-21 · 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{PX7RHIDWTUFICQ67FU5RP5BFXF}

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	2026-05-18T01:40:47.962917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dff13a0769d0a8143df2d3b17f425b96eefd06d6cd7e8b04c1d5abe59fc028c

Aliases

arxiv: astro-ph/0004310 · arxiv_version: astro-ph/0004310v1 · doi: 10.48550/arxiv.astro-ph/0004310 · pith_short_12: PX7RHIDWTUFI · pith_short_16: PX7RHIDWTUFICQ67 · pith_short_8: PX7RHIDW

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/PX7RHIDWTUFICQ67FU5RP5BFXF \
  | 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: 7dff13a0769d0a8143df2d3b17f425b96eefd06d6cd7e8b04c1d5abe59fc028c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5910043c5bce5cd2a307d67dbf5dbc749ead4d3cdd610e2d91ba9c81942553f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-21T08:13:37Z",
    "title_canon_sha256": "cf689584672ad989a1a9f391561445eedbaebdb7a1981087e02d22fc4b15482a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004310",
    "kind": "arxiv",
    "version": 1
  }
}