Pith Number

pith:SM4YL5OV

pith:2013:SM4YL5OVQAWYIZOL4KTQYEUHEX

not attested not anchored not stored refs pending

Late-Time Circumstellar Interaction in a Spitzer Selected Sample of Type IIn Supernovae

(2) University of Virginia, (3) UT Austin), Alexei V. Filippenko (1), Jeffrey M. Silverman (3), Kelsey I. Clubb (1) ((1) UC Berkeley, Michael F. Skrutskie (2), Mohan Ganeshalingam, Ori D. Fox, S. Bradley Cenko

arxiv:1304.0248 v1 · 2013-03-31 · astro-ph.SR · 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{SM4YL5OVQAWYIZOL4KTQYEUHEX}

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	2026-05-18T01:50:50.657959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

933985f5d5802d8465cbe2a70c128725c4e1bf86d93216f8033b97d5791551e6

Aliases

arxiv: 1304.0248 · arxiv_version: 1304.0248v1 · doi: 10.48550/arxiv.1304.0248 · pith_short_12: SM4YL5OVQAWY · pith_short_16: SM4YL5OVQAWYIZOL · pith_short_8: SM4YL5OV

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/SM4YL5OVQAWYIZOL4KTQYEUHEX \
  | 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: 933985f5d5802d8465cbe2a70c128725c4e1bf86d93216f8033b97d5791551e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63085578b0d6409f008c6e5adb6ac5ffff30ff3a705120c34cfa43ce7595fc6b",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-03-31T20:00:02Z",
    "title_canon_sha256": "bb7accb8f83b3ce2a306dc70b3c9d7bc499bfa6d90f140f9455ad6bc3009cac3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0248",
    "kind": "arxiv",
    "version": 1
  }
}