Pith Number

pith:J2OCZNMY

pith:2007:J2OCZNMYJ7YPL536XQKBNLPBJC

not attested not anchored not stored refs pending

Accounting for the Unresolved X-ray Background with Sterile Neutrino Dark Matter

Daniel Cumberbatch, Joseph Silk

arxiv:0709.0279 v1 · 2007-09-03 · 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{J2OCZNMYJ7YPL536XQKBNLPBJC}

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	2026-07-04T15:21:25.984067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e9c2cb5984ff0f5f77ebc1416ade1489d0ff2244c67ce2fad56a2d27be1d645

Aliases

arxiv: 0709.0279 · arxiv_version: 0709.0279v1 · doi: 10.48550/arxiv.0709.0279 · pith_short_12: J2OCZNMYJ7YP · pith_short_16: J2OCZNMYJ7YPL536 · pith_short_8: J2OCZNMY

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/J2OCZNMYJ7YPL536XQKBNLPBJC \
  | 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: 4e9c2cb5984ff0f5f77ebc1416ade1489d0ff2244c67ce2fad56a2d27be1d645

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee12b961c2b49b4a08f71fd54f4fdefb931e52fc457acc6acf59dd593a7dc3b1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-03T17:22:27Z",
    "title_canon_sha256": "f6ffd9fe258701bee35b455838c4f12eb6885f26ae49c71781e07b6534797e35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.0279",
    "kind": "arxiv",
    "version": 1
  }
}