Pith Number

pith:2X7US2R4

pith:2018:2X7US2R45CCGGCXX2WSVNQDH6Q

not attested not anchored not stored refs pending

Explosions of blue supergiants from binary mergers for SN 1987A

2, 2), (2) Monash Centre for Astrophysics, (3) Max-Planck-Institute for Astrophysics, 4), (4) Institute for Theoretical, 5) ((1) School of Physics, (5) Tsung-Dao Lee Institute, Alexander Heger (1, Astronomy, Athira Menon (1, Australia, China), Experimental Physics of National Research Center, Garching, Germany, Melbourne, Monash University, Moscow, Russia, Shanghai, Victor Utrobin (3

arxiv:1806.08072 v2 · 2018-06-21 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2X7US2R45CCGGCXX2WSVNQDH6Q}

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	2026-05-18T00:03:05.106723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5ff496a3ce884630af7d5a556c067f43fb1d6bff849dc88c3365eb609cf67dc

Aliases

arxiv: 1806.08072 · arxiv_version: 1806.08072v2 · doi: 10.48550/arxiv.1806.08072 · pith_short_12: 2X7US2R45CCG · pith_short_16: 2X7US2R45CCGGCXX · pith_short_8: 2X7US2R4

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/2X7US2R45CCGGCXX2WSVNQDH6Q \
  | 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: d5ff496a3ce884630af7d5a556c067f43fb1d6bff849dc88c3365eb609cf67dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d43fa442bd32523d4e36380c7cc79a6483ed5eef6a82030c23ab7d43c6cd5a90",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-06-21T05:38:08Z",
    "title_canon_sha256": "54f692ba77576e3f52cc7f1f56296afd24a2a23851e41ff1c176c11a34eb35ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08072",
    "kind": "arxiv",
    "version": 2
  }
}