Pith Number

pith:F7DRKWDM

pith:1999:F7DRKWDM2ZEV6UJZQ4LXD5E2JV

not attested not anchored not stored refs pending

Limits on Stellar Objects as the Dark Matter of Our Halo: Nonbaryonic Dark Matter Seems to be Required

Brian Fields, David Graff, Katherine Freese

arxiv:astro-ph/9904401 v1 · 1999-04-28 · 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{F7DRKWDM2ZEV6UJZQ4LXD5E2JV}

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	2026-07-04T14:16:41.368056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fc715586cd6495f5139871771f49a4d4ba1ce9657ffc1bdef3bfc47ea218b19

Aliases

arxiv: astro-ph/9904401 · arxiv_version: astro-ph/9904401v1 · doi: 10.48550/arxiv.astro-ph/9904401 · pith_short_12: F7DRKWDM2ZEV · pith_short_16: F7DRKWDM2ZEV6UJZ · pith_short_8: F7DRKWDM

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/F7DRKWDM2ZEV6UJZQ4LXD5E2JV \
  | 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: 2fc715586cd6495f5139871771f49a4d4ba1ce9657ffc1bdef3bfc47ea218b19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2623c87ef4bb65ba1a3a236d4c8941a47ee1ca26a5d11c89b1086658dec0f38b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-28T23:23:15Z",
    "title_canon_sha256": "01893405a5ac3a382f319fb98bd316bcf1d2c59f52fe707ffd5c64c3af792f30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904401",
    "kind": "arxiv",
    "version": 1
  }
}