Pith Number

pith:XPWDHUC6

pith:2007:XPWDHUC6X3JY7MFRLDEK7SX5DG

not attested not anchored not stored refs pending

Neutrinos as galactic dark matter in the Ursa Major galaxy group?

B. Famaey, G. Gentile, H. S. Zhao

arxiv:0712.1816 v1 · 2007-12-11 · 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{XPWDHUC6X3JY7MFRLDEK7SX5DG}

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	2026-07-04T17:07:12.422425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbec33d05ebed38fb0b158c8afcafd19a576e4d09ebc3a1c542eef93d3e7ce93

Aliases

arxiv: 0712.1816 · arxiv_version: 0712.1816v1 · doi: 10.48550/arxiv.0712.1816 · pith_short_12: XPWDHUC6X3JY · pith_short_16: XPWDHUC6X3JY7MFR · pith_short_8: XPWDHUC6

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/XPWDHUC6X3JY7MFRLDEK7SX5DG \
  | 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: bbec33d05ebed38fb0b158c8afcafd19a576e4d09ebc3a1c542eef93d3e7ce93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4c0be2e1635cd4460001aa193bdabe9a6deace91de28dff84c6414d73fec0e0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-12-11T21:04:16Z",
    "title_canon_sha256": "1217d9124c9c42ba0ae48d7dc6b1bc0ca496d1829220ae8c707d0e61e804ac1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.1816",
    "kind": "arxiv",
    "version": 1
  }
}