Pith Number

pith:F6MTWVJV

pith:2011:F6MTWVJVIQEF5VGLKQQOQGHIRP

not attested not anchored not stored refs pending

Gamma-Ray Constraints on the First Stars from Annihilation of Light WIMPs

Douglas Spolyar, Juerg Diemand, Katherine Freese, Pearl Sandick

arxiv:1108.3820 v2 · 2011-08-18 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F6MTWVJVIQEF5VGLKQQOQGHIRP}

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	2026-05-18T03:23:02.438861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f993b553544085ed4cb5420e818e88bf09d61a69e0d78c3a6e1f886d8fc6dbb

Aliases

arxiv: 1108.3820 · arxiv_version: 1108.3820v2 · doi: 10.48550/arxiv.1108.3820 · pith_short_12: F6MTWVJVIQEF · pith_short_16: F6MTWVJVIQEF5VGL · pith_short_8: F6MTWVJV

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/F6MTWVJVIQEF5VGLKQQOQGHIRP \
  | 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: 2f993b553544085ed4cb5420e818e88bf09d61a69e0d78c3a6e1f886d8fc6dbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "204b7b1b12aa51f759e7f2d7f81c130a63a941aadf58120080de41fbfecb2393",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-18T19:23:20Z",
    "title_canon_sha256": "c49efd8bafbc0f9a153a31cc8bb2189b2c13b68f3a8cabbb928b91ec6145e935"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3820",
    "kind": "arxiv",
    "version": 2
  }
}