Pith Number

pith:ASQCPZ42

pith:2009:ASQCPZ42YDMUF3YRVS72GBR6AP

not attested not anchored not stored refs pending

Extragalactic gamma-ray background radiation from dark matter annihilation

Jesus Zavala, Michael Boylan-Kolchin, Volker Springel

arxiv:0908.2428 v3 · 2009-08-17 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ASQCPZ42YDMUF3YRVS72GBR6AP}

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	2026-05-18T04:34:01.474364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04a027e79ac0d942ef11acbfa3063e03e026d6a547a8e7a6058ce491489084ce

Aliases

arxiv: 0908.2428 · arxiv_version: 0908.2428v3 · doi: 10.48550/arxiv.0908.2428 · pith_short_12: ASQCPZ42YDMU · pith_short_16: ASQCPZ42YDMUF3YR · pith_short_8: ASQCPZ42

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/ASQCPZ42YDMUF3YRVS72GBR6AP \
  | 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: 04a027e79ac0d942ef11acbfa3063e03e026d6a547a8e7a6058ce491489084ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc6160cc7ec25cfb345132545beefc79f3f7701e0688b49684624d564c55f5f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-17T20:01:05Z",
    "title_canon_sha256": "f1b7bc47c5de10b0e0acf304dc4d53471f7bc1ca9861d4abb3556c99b0744bb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2428",
    "kind": "arxiv",
    "version": 3
  }
}