Pith Number

pith:DY2UCR2A

pith:2014:DY2UCR2A3CAUUBFKLCTH55DVHQ

not attested not anchored not stored refs pending

Uncovering the Putative B-Star Binary Companion of the SN 1993J Progenitor

Alexei V. Filippenko (UC Berkeley), Alex H. Parker (UC Berkeley), Claes Fransson (Stockholm University), K. Azalee Bostroem (STScI), Nathan Smith (Steward), Ori D. Fox (UC Berkeley), Poonam Chandra (TIFA), S. Bradley Cenko (NASA Goddard), Schuyler D. Van Dyk (Caltech), Thomas Matheson (NOAO), Vikram Dwarkadas (Chicago), Weidong Li (UC Berkeley)

arxiv:1405.4863 v2 · 2014-05-19 · 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{DY2UCR2A3CAUUBFKLCTH55DVHQ}

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	2026-05-18T01:43:10.664364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e35414740d8814a04aa58a67ef4753c326868308ee18e7fe289cbbbcdecd184

Aliases

arxiv: 1405.4863 · arxiv_version: 1405.4863v2 · doi: 10.48550/arxiv.1405.4863 · pith_short_12: DY2UCR2A3CAU · pith_short_16: DY2UCR2A3CAUUBFK · pith_short_8: DY2UCR2A

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/DY2UCR2A3CAUUBFKLCTH55DVHQ \
  | 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: 1e35414740d8814a04aa58a67ef4753c326868308ee18e7fe289cbbbcdecd184

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fadbf1170819d1a666aef62fb69f4d3cde5349860a7f7232cffb2d7b5fd6a5f6",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-05-19T20:00:08Z",
    "title_canon_sha256": "5115980333482759a3e239360fc8d434d5150a90942efbf6e3a8f1c99aef41b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4863",
    "kind": "arxiv",
    "version": 2
  }
}