Pith Number

pith:K4ZWXVUL

pith:2010:K4ZWXVULPAKZJX5USOJVR6NF2I

not attested not anchored not stored refs pending

Constraints on the neutrino mass and the primordial magnetic field from the matter density fluctuation parameter $\sigma_8$

Dai G. Yamazaki, Grant. J. Mathews, Kiyotomo Ichiki, Toshitaka Kajino

arxiv:1005.1638 v1 · 2010-05-10 · astro-ph.CO · gr-qc · 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{K4ZWXVULPAKZJX5USOJVR6NF2I}

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	2026-05-18T02:33:32.314968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57336bd68b781594dfb4939358f9a5d221f231ddaaae07427f29cce97654c126

Aliases

arxiv: 1005.1638 · arxiv_version: 1005.1638v1 · doi: 10.48550/arxiv.1005.1638 · pith_short_12: K4ZWXVULPAKZ · pith_short_16: K4ZWXVULPAKZJX5U · pith_short_8: K4ZWXVUL

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/K4ZWXVULPAKZJX5USOJVR6NF2I \
  | 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: 57336bd68b781594dfb4939358f9a5d221f231ddaaae07427f29cce97654c126

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cdf3e7d2cea4f22aed20adf519e02a9761d840398ceef9e5d185068adfc851d",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-05-10T20:00:00Z",
    "title_canon_sha256": "e38ea7de63628c843742ff68b4911182ecef9fb13bc884f0e10b1674add4ebd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.1638",
    "kind": "arxiv",
    "version": 1
  }
}