Pith Number

pith:P3IAV2DW

pith:2025:P3IAV2DW7MEIDKZHBR72XQRAEV

not attested not anchored not stored refs pending

Verification of Cas A neutron star cooling rate using Chandra HRC-S observations

Craig O. Heinke, Daniel Patnaude, Dmitry D. Ofengeim, Jiaqi Zhao, Peter S. Shternin, Wynn C. G. Ho

arxiv:2508.15161 v2 · 2025-08-21 · 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{P3IAV2DW7MEIDKZHBR72XQRAEV}

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	2026-07-05T11:58:36.016561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ed00ae876fb0881ab270c7fabc220256b8816b29dab0e07d626667c27ca7046

Aliases

arxiv: 2508.15161 · arxiv_version: 2508.15161v2 · doi: 10.48550/arxiv.2508.15161 · pith_short_12: P3IAV2DW7MEI · pith_short_16: P3IAV2DW7MEIDKZH · pith_short_8: P3IAV2DW

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/P3IAV2DW7MEIDKZHBR72XQRAEV \
  | 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: 7ed00ae876fb0881ab270c7fabc220256b8816b29dab0e07d626667c27ca7046

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8fb7c9fa8f27e824d885bf2be8416e603ac4c7c221bf826083746efdd20f05c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-08-21T01:55:18Z",
    "title_canon_sha256": "c74af6fe134d4c7096b1c99a876df1b7d5d3cd14013193e267287f6b903b0bb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.15161",
    "kind": "arxiv",
    "version": 2
  }
}