Pith Number

pith:W7UH33QX

pith:2021:W7UH33QXLHJ4F4GWWIHXW65RKX

not attested not anchored not stored refs pending

Evidence for multiple origins of fast declining Type II supernovae from spectropolarimetry of SN 2013ej and SN 2017ahn

A. Cikota, D. Baade, D. E. Reichart, D. J. Sand, F. Patat, H. Kuncarayakti, J. R. Maund, L. Tartaglia, M. Bulla, S. Taubenberger, S. Valenti, T. Faran, T. Nagao

arxiv:2105.13315 v1 · 2021-05-27 · astro-ph.HE · 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{W7UH33QXLHJ4F4GWWIHXW65RKX}

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	2026-07-05T02:53:45.441436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e87dee1759d3c2f0d6b20f7b7bb155cdcc30ac3a142263bfc6d799b2f35477

Aliases

arxiv: 2105.13315 · arxiv_version: 2105.13315v1 · doi: 10.48550/arxiv.2105.13315 · pith_short_12: W7UH33QXLHJ4 · pith_short_16: W7UH33QXLHJ4F4GW · pith_short_8: W7UH33QX

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/W7UH33QXLHJ4F4GWWIHXW65RKX \
  | 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: b7e87dee1759d3c2f0d6b20f7b7bb155cdcc30ac3a142263bfc6d799b2f35477

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f46d1d5e1cffad00ec7fddf2c9727dcc5449d6f62b21d800c4aa7b4e9e067faa",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-05-27T17:10:28Z",
    "title_canon_sha256": "acf33d8eaaad92888614c39ab3a06bed40a4436176b0911ab0c1702b1b46cc3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.13315",
    "kind": "arxiv",
    "version": 1
  }
}