Pith Number

pith:AGMQ4KZH

pith:2010:AGMQ4KZH3TUYCG4FMSCVRB4DK7

not attested not anchored not stored refs pending

Observing Supernova 1987A with the Refurbished Hubble Space Telescope

Arlin Crotts (Columbia), Chun Pun (Hong Kong), Claes Fransson (Stockholm), Craig Wheeler (Texas), Eli Dwek (GSFC), George Sonneborn (GSFC), IAS), Jesper Sollerman (Stockholm), John Stocke (CASA/Colorado), Josefin Larsson (Stockholm), Kevin France (CASA/University of Colorado), Kevin Heng (ETH Zurich, Lifan Wang (Texas A&M), Nathan Smith (UC-Berkeley), Nino Panagia (STScI), Patrice Bouchet (CEA - Saclay), Peter Challis (CfA/Harvard), Peter Garnavich (Notre Dame), Peter Lundqvist (Stockholm), Richard McCray (JILA/University of Colorado), Robert Kirshner (CfA/Harvard), Stephen Lawrence (Hofstra)

arxiv:1009.0518 v1 · 2010-09-02 · 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{AGMQ4KZH3TUYCG4FMSCVRB4DK7}

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	2026-05-18T02:05:37.755139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01990e2b27dce9811b85648558878357e9149b3abc526dc24eef75faffb3d630

Aliases

arxiv: 1009.0518 · arxiv_version: 1009.0518v1 · doi: 10.48550/arxiv.1009.0518 · pith_short_12: AGMQ4KZH3TUY · pith_short_16: AGMQ4KZH3TUYCG4F · pith_short_8: AGMQ4KZH

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/AGMQ4KZH3TUYCG4FMSCVRB4DK7 \
  | 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: 01990e2b27dce9811b85648558878357e9149b3abc526dc24eef75faffb3d630

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "038eff6cf04792a663f0136c67e228c6bec0b61c1debd4fdb71aac6940f94706",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-02T19:52:16Z",
    "title_canon_sha256": "b9c0ca6debeb4850ee9057f4e084c80418243c959897c28b6e8fcbbc18a47292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0518",
    "kind": "arxiv",
    "version": 1
  }
}