Pith Number

pith:EI5F2GXV

pith:2014:EI5F2GXVUR2ZJXB3HA5APALCOU

not attested not anchored not stored refs pending

Axion mass limit from observations of the neutron star in Cassiopeia A

Lev B. Leinson

arxiv:1405.6873 v3 · 2014-05-27 · hep-ph

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	2026-05-18T02:45:14.030700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

223a5d1af5a47594dc3b383a078162750be6c23d84d8a8e9b7f7ecf563e91a29

Aliases

arxiv: 1405.6873 · arxiv_version: 1405.6873v3 · doi: 10.48550/arxiv.1405.6873 · pith_short_12: EI5F2GXVUR2Z · pith_short_16: EI5F2GXVUR2ZJXB3 · pith_short_8: EI5F2GXV

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/EI5F2GXVUR2ZJXB3HA5APALCOU \
  | 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: 223a5d1af5a47594dc3b383a078162750be6c23d84d8a8e9b7f7ecf563e91a29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b10a150210e01d59a4c1a98b227a3d960ab3b98240278e0c9cb57683b72fbc0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2014-05-27T11:30:51Z",
    "title_canon_sha256": "c9a5f32d3aead2821abe4f563bde1f077a3c654389654b7d6eed4a106804a9eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6873",
    "kind": "arxiv",
    "version": 3
  }
}