Pith Number

pith:BXK5LNOP

pith:2015:BXK5LNOPTL6HZVHUZFOKZERXPB

not attested not anchored not stored refs pending

SN Refsdal: Classification as a Luminous and Blue SN 1987A-like Type II Supernova

A. G. Riess, A. Strom, A. V. Filippenko, A. Zitrin, B. J. Weiner, C. C. Steidel, C. McCully, G. Brammer, J. Hjorth, J. M. Silverman, J. Selsing, K. B. Schmidt, L. Christensen, L.-G. Strolger, M. Bradac, M. L. Graham, O. Graur, P. L. Kelly, R. J. Foley, S. A. Rodney, S. W. Jha, T. Treu

arxiv:1512.09093 v1 · 2015-12-30 · astro-ph.GA · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BXK5LNOPTL6HZVHUZFOKZERXPB}

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	2026-05-18T00:59:26.137406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0dd5d5b5cf9afc7cd4f4c95cac923778660a7f21aa2750f01627f8189c6eb0f5

Aliases

arxiv: 1512.09093 · arxiv_version: 1512.09093v1 · doi: 10.48550/arxiv.1512.09093 · pith_short_12: BXK5LNOPTL6H · pith_short_16: BXK5LNOPTL6HZVHU · pith_short_8: BXK5LNOP

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/BXK5LNOPTL6HZVHUZFOKZERXPB \
  | 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: 0dd5d5b5cf9afc7cd4f4c95cac923778660a7f21aa2750f01627f8189c6eb0f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc3dae791fb812d857486510304b640caf0c4f6fb3d10aba8b2ab9f731112d6a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-30T20:12:25Z",
    "title_canon_sha256": "2960c45358099f5342f4f28b96db92c935a960d6430c364a88840c18ae06f09e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.09093",
    "kind": "arxiv",
    "version": 1
  }
}