Pith Number

pith:EF4CRT6R

pith:2011:EF4CRT6R7VSNTKSCLCMUGT5XYQ

not attested not anchored not stored refs pending

Evolution and Hydrodynamics of the Very-Broad X-ray Line Emission in SN 1987A

C. R. Canizares, D. Dewey, F. Haberl, R. Sturm, V. V. Dwarkadas

arxiv:1111.5314 v3 · 2011-11-22 · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EF4CRT6R7VSNTKSCLCMUGT5XYQ}

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	2026-05-18T01:59:26.682525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

217828cfd1fd64d9aa425899434fb7c40ad140642685c6a46acee24cbbded46d

Aliases

arxiv: 1111.5314 · arxiv_version: 1111.5314v3 · doi: 10.48550/arxiv.1111.5314 · pith_short_12: EF4CRT6R7VSN · pith_short_16: EF4CRT6R7VSNTKSC · pith_short_8: EF4CRT6R

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/EF4CRT6R7VSNTKSCLCMUGT5XYQ \
  | 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: 217828cfd1fd64d9aa425899434fb7c40ad140642685c6a46acee24cbbded46d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdcc0a2de32b408342a8485519504d48c5b3e3c6cc5179a78dec90077b195bc6",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-11-22T20:27:30Z",
    "title_canon_sha256": "005be120a0cc787f39725d5b383aba3450352d6bb24b3f091fc6c5740d14845f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5314",
    "kind": "arxiv",
    "version": 3
  }
}