Pith Number

pith:PJC7EXTR

pith:2011:PJC7EXTRIQZFFQG4NF7WW67453

not attested not anchored not stored refs pending

Searching for Dark Matter Annihilation in M87

Alexander Summa, Dominik Els\"asser, Karl Mannheim, Michael R\"uger, Sheetal Saxena

arxiv:1109.3810 v1 · 2011-09-17 · 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{PJC7EXTRIQZFFQG4NF7WW67453}

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	2026-05-18T02:00:29.721806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a45f25e71443252c0dc697f6b7bfceeff95aa9970c71f2a59ec5d766bbf3bca

Aliases

arxiv: 1109.3810 · arxiv_version: 1109.3810v1 · doi: 10.48550/arxiv.1109.3810 · pith_short_12: PJC7EXTRIQZF · pith_short_16: PJC7EXTRIQZFFQG4 · pith_short_8: PJC7EXTR

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/PJC7EXTRIQZFFQG4NF7WW67453 \
  | 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: 7a45f25e71443252c0dc697f6b7bfceeff95aa9970c71f2a59ec5d766bbf3bca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08e98464353a19d989716d708e48dd795e65fc7eaaa39e1cf42d3dbe253b6039",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-09-17T17:41:31Z",
    "title_canon_sha256": "1e3c81b888499c4fdd2c4c1a5421f1f949a5929108f19460787e95530e4a9460"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3810",
    "kind": "arxiv",
    "version": 1
  }
}