Pith Number

pith:X4T3FD7O

pith:2015:X4T3FD7OJU65QEHGH4TMUSKL2Y

not attested not anchored not stored refs pending

SN 2013ej - A type IIL supernova with weak signs of interaction

Alak Ray, Brijesh Kumar, Chetna Duggal, Donald G. York, Firoza Sutaria, H.C. Chandola, Julie Dahlstrom, Kuntal Misra, Margarita Safonova, Mridweeka Singh, Peter J. Brown, Sayan Chakraborti, Subhash Bose, Vikram Dwarkadas

arxiv:1504.06207 v2 · 2015-04-23 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X4T3FD7OJU65QEHGH4TMUSKL2Y}

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	2026-05-18T02:17:44.650661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf27b28fee4d3dd810e63f26ca494bd62fe45f7b2124f5b6bfc1554daab67008

Aliases

arxiv: 1504.06207 · arxiv_version: 1504.06207v2 · doi: 10.48550/arxiv.1504.06207 · pith_short_12: X4T3FD7OJU65 · pith_short_16: X4T3FD7OJU65QEHG · pith_short_8: X4T3FD7O

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/X4T3FD7OJU65QEHGH4TMUSKL2Y \
  | 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: bf27b28fee4d3dd810e63f26ca494bd62fe45f7b2124f5b6bfc1554daab67008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e7e56f67de402ab2c3737c4ea473a9d0b674873dcaf73dbe5903f6a9ff8dc6e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-23T14:42:33Z",
    "title_canon_sha256": "0636b9e5178022c1987c2ce4282a873253990ec3904bb3e05e98fc8dc78b8739"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06207",
    "kind": "arxiv",
    "version": 2
  }
}