Pith Number

pith:IDBVK233

pith:1999:IDBVK233U54SMH2B7ZUSHDLZKQ

not attested not anchored not stored refs pending

If the MACHOs are Old White Dwarfs

Astronomy, Canada), Harvey B. Richer (Department of Physics, University of British Columbia, Vancouver

arxiv:astro-ph/9906424 v1 · 1999-06-26 · 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{IDBVK233U54SMH2B7ZUSHDLZKQ}

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	2026-07-04T14:16:51.067053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40c3556b7ba779261f41fe69238d7954101b598f81338bcb10f144bec8dbb0a8

Aliases

arxiv: astro-ph/9906424 · arxiv_version: astro-ph/9906424v1 · doi: 10.48550/arxiv.astro-ph/9906424 · pith_short_12: IDBVK233U54S · pith_short_16: IDBVK233U54SMH2B · pith_short_8: IDBVK233

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/IDBVK233U54SMH2B7ZUSHDLZKQ \
  | 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: 40c3556b7ba779261f41fe69238d7954101b598f81338bcb10f144bec8dbb0a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f39dadcb82426d5e41284ba0e206206ab9fafd0105bc369bbb3b4053fb20df3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-06-26T10:29:34Z",
    "title_canon_sha256": "948cdd7d74bae911b2d1b59c78c81b4b3660b87e852c4720308f912e854cef41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9906424",
    "kind": "arxiv",
    "version": 1
  }
}