Pith Number

pith:D42O2ZBX

pith:2009:D42O2ZBXQ2GU22ENG5FFNMVMHT

not attested not anchored not stored refs pending

Cosmic positron excess: is the dark matter solution a good bet?

Julien Lavalle

arxiv:0911.5102 v1 · 2009-11-26 · astro-ph.GA · 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{D42O2ZBXQ2GU22ENG5FFNMVMHT}

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	2026-05-18T02:34:03.374514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f34ed6437868d4d688d374a56b2ac3ccd08ba16e6dba4dcfaaad90922b0c710

Aliases

arxiv: 0911.5102 · arxiv_version: 0911.5102v1 · doi: 10.48550/arxiv.0911.5102 · pith_short_12: D42O2ZBXQ2GU · pith_short_16: D42O2ZBXQ2GU22EN · pith_short_8: D42O2ZBX

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/D42O2ZBXQ2GU22ENG5FFNMVMHT \
  | 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: 1f34ed6437868d4d688d374a56b2ac3ccd08ba16e6dba4dcfaaad90922b0c710

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bc91b4d68084307ce35c593d5e8661481afd51876b4b456869b4234c5457709",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-26T15:32:59Z",
    "title_canon_sha256": "e66d7d38e7c1c771775423709419cf275554ce3ff81d1ca680cde1c244ad584d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5102",
    "kind": "arxiv",
    "version": 1
  }
}