Pith Number

pith:BGWQTCN3

pith:1999:BGWQTCN36VORDHRRDGTQ5W6IKW

not attested not anchored not stored refs pending

What are Machos? Limits on Stellar Objects as the Dark Matter of our Halo

Brian Fields, David Graff, Katherine Freese

arxiv:astro-ph/9901178 v1 · 1999-01-13 · 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{BGWQTCN36VORDHRRDGTQ5W6IKW}

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	2026-07-04T15:51:14.390745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09ad0989bbf55d119e3119a70edbc8558d9d5dd2b8cb0c839459cd056963ebaa

Aliases

arxiv: astro-ph/9901178 · arxiv_version: astro-ph/9901178v1 · doi: 10.48550/arxiv.astro-ph/9901178 · pith_short_12: BGWQTCN36VOR · pith_short_16: BGWQTCN36VORDHRR · pith_short_8: BGWQTCN3

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/BGWQTCN36VORDHRRDGTQ5W6IKW \
  | 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: 09ad0989bbf55d119e3119a70edbc8558d9d5dd2b8cb0c839459cd056963ebaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e53b4dc4aa5e3278a18117ac47762ea7f4e1d645b7642a1209173e84a8c1d09",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-13T22:58:05Z",
    "title_canon_sha256": "37452bb02a80795956ce9b7b9c54a91ec7d32541bb5d2d15d39f9f5325c9b7bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901178",
    "kind": "arxiv",
    "version": 1
  }
}