Pith Number

pith:TP7RGEWL

pith:2020:TP7RGEWLQF5JZ3HQRRX4IUTGUZ

not attested not anchored not stored refs pending

The peculiar Ca-rich SN 2019ehk: Evidence for a Type IIb core-collapse supernova from a low mass stripped progenitor

Avishay Gal-Yam, Kishalay De, Mansi M. Kasliwal, Ofer Yaron, S. R. Kulkarni, U. Christoffer Fremling

arxiv:2009.02347 v2 · 2020-09-04 · 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{TP7RGEWLQF5JZ3HQRRX4IUTGUZ}

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	2026-07-05T02:09:46.366239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bff1312cb817a9cecf08c6fc45266a66ed9588a0ce430b33680f43f616dd0d3

Aliases

arxiv: 2009.02347 · arxiv_version: 2009.02347v2 · doi: 10.48550/arxiv.2009.02347 · pith_short_12: TP7RGEWLQF5J · pith_short_16: TP7RGEWLQF5JZ3HQ · pith_short_8: TP7RGEWL

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/TP7RGEWLQF5JZ3HQRRX4IUTGUZ \
  | 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: 9bff1312cb817a9cecf08c6fc45266a66ed9588a0ce430b33680f43f616dd0d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74492ad3da091fb03cfe960f609406c41001686609cae9e4d510f0466f11fffc",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-09-04T18:14:33Z",
    "title_canon_sha256": "5630aa59925fa9a738e46e4a952eccaed508fb3e9871229b47a860e5286cba4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.02347",
    "kind": "arxiv",
    "version": 2
  }
}