Pith Number

pith:LJINH3FH

pith:2019:LJINH3FH3WBIJ2WGJ5DPSMDHJG

not attested not anchored not stored refs pending

LSQ13ddu: A rapidly-evolving stripped-envelope supernova with early circumstellar interaction signatures

Carlos Contreras, Charles Baltay, Chris Ashall, Christopher R. Burns, Cosimo Inserra, D. Andrew Howell, David Rabinowitz, David Young, Emir Karamehmetoglu, Emma Callis, Eric Y. Hsiao, Erkki Kankare, Giuliano Pignata, Griffin Hossenizadeh, Iair Arcavi, Jesper Sollerman, Joseph Lyman, Kate Maguire, Mansi Kasliwal, Mark Phillips, Mark Sullivan, Maximilian Stritzinger, Melissa Shahbandeh, Miika Pursiainen, Morgan Fraser, Nidia Morrell, Peter Clark, Peter Nugent, Rubina Kotak, Simon Prentice, Stephen J. Smartt, Tiara Diamond, Ting-Wan Chen

arxiv:1912.05986 v2 · 2019-12-12 · 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{LJINH3FH3WBIJ2WGJ5DPSMDHJG}

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	2026-07-05T00:34:49.922078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a50d3eca7dd8284eac64f46f930674980dedf5fed834788d2cfb33433cf2389

Aliases

arxiv: 1912.05986 · arxiv_version: 1912.05986v2 · doi: 10.48550/arxiv.1912.05986 · pith_short_12: LJINH3FH3WBI · pith_short_16: LJINH3FH3WBIJ2WG · pith_short_8: LJINH3FH

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/LJINH3FH3WBIJ2WGJ5DPSMDHJG \
  | 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: 5a50d3eca7dd8284eac64f46f930674980dedf5fed834788d2cfb33433cf2389

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0ca29be81cbc001cc15516b9468380aa0fb7564edb30cb86caa2c8952c2f6e2",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-12-12T14:33:47Z",
    "title_canon_sha256": "6262c66021f495068c3fa46d94b5e341b43d72d7a01b65aee2f538a29cd7cc18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.05986",
    "kind": "arxiv",
    "version": 2
  }
}