Pith Number

pith:FNSWFND2

pith:2018:FNSWFND2WWDBGMA2BBNSU7YNXS

not attested not anchored not stored refs pending

Limit on the Axion Decay Constant from the Cooling Neutron Star in Cassiopeia A

Jiaming Zheng, Keisuke Yanagi, Koichi Hamaguchi, Natsumi Nagata

arxiv:1806.07151 v2 · 2018-06-19 · hep-ph · astro-ph.HE

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

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.

Cited by

1 paper in Pith

Stellar Superradiance and Low-Energy Absorption in Dense Nuclear Media

Receipt and verification

First computed	2026-05-18T00:00:19.120420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b6562b47ab58613301a085b2a7f0dbc910c6b8460e2386e59995fd8c439b053

Aliases

arxiv: 1806.07151 · arxiv_version: 1806.07151v2 · doi: 10.48550/arxiv.1806.07151 · pith_short_12: FNSWFND2WWDB · pith_short_16: FNSWFND2WWDBGMA2 · pith_short_8: FNSWFND2

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/FNSWFND2WWDBGMA2BBNSU7YNXS \
  | 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: 2b6562b47ab58613301a085b2a7f0dbc910c6b8460e2386e59995fd8c439b053

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89b8b00a32846687d044cfd798723af406374741e238fc61f9e85056592c684d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2018-06-19T10:49:03Z",
    "title_canon_sha256": "b93acf924f6f43870b88da9943a7618ec49f48d0514db2376bf229f9db0faf21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07151",
    "kind": "arxiv",
    "version": 2
  }
}