Pith Number

pith:TKFVBY6R

pith:1999:TKFVBY6RH6AF7H6GZWCLCFVJQY

not attested not anchored not stored refs pending

Chemical Abundance Constraints on White Dwarfs as Halo Dark Matter

Brian D. Fields, David S. Graff, Katherine Freese

arxiv:astro-ph/9904291 v1 · 1999-04-21 · 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{TKFVBY6RH6AF7H6GZWCLCFVJQY}

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.

Cited by

1 paper in Pith

Stellar microlensing surveys as a probe of Primordial Black Holes: status and prospects

Receipt and verification

First computed	2026-07-04T16:10:54.957814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a8b50e3d13f805f9fc6cd84b116a9861217bd42c59193f67175c9f443c0133e

Aliases

arxiv: astro-ph/9904291 · arxiv_version: astro-ph/9904291v1 · doi: 10.48550/arxiv.astro-ph/9904291 · pith_short_12: TKFVBY6RH6AF · pith_short_16: TKFVBY6RH6AF7H6G · pith_short_8: TKFVBY6R

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/TKFVBY6RH6AF7H6GZWCLCFVJQY \
  | 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: 9a8b50e3d13f805f9fc6cd84b116a9861217bd42c59193f67175c9f443c0133e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "879f6e95e337c35e7018a24a14c8259c8e728c5122b854069dc153b60e709d0a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-21T20:57:23Z",
    "title_canon_sha256": "0db2765ab72d7ce1a0f32170db0eb43291c392769b3bc2263624fe8e3cc682c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904291",
    "kind": "arxiv",
    "version": 1
  }
}