Pith Number

pith:S4RDYFFP

pith:2013:S4RDYFFP2YHW47NFEFUKTILJP2

not attested not anchored not stored refs pending

Perturbed Recombination from Dark Matter Annihilation

Cora Dvorkin, Kfir Blum, Matias Zaldarriaga (IAS)

arxiv:1302.4753 v2 · 2013-02-19 · astro-ph.CO · hep-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{S4RDYFFP2YHW47NFEFUKTILJP2}

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	2026-05-18T03:21:08.126695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97223c14afd60f6e7da52168a9a1697e996eea4bbb672292cdd78f214bcce0d7

Aliases

arxiv: 1302.4753 · arxiv_version: 1302.4753v2 · doi: 10.48550/arxiv.1302.4753 · pith_short_12: S4RDYFFP2YHW · pith_short_16: S4RDYFFP2YHW47NF · pith_short_8: S4RDYFFP

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/S4RDYFFP2YHW47NFEFUKTILJP2 \
  | 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: 97223c14afd60f6e7da52168a9a1697e996eea4bbb672292cdd78f214bcce0d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf358e21d23b91c06618830d7e5d6819abd06a5190bdf09a93c2ae4768848c54",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-19T21:13:29Z",
    "title_canon_sha256": "7604340956259dace360c7dd6ac761964140f7843d648133582eee0dbb599b95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4753",
    "kind": "arxiv",
    "version": 2
  }
}