Pith Number

pith:QRCL5MFX

pith:2015:QRCL5MFXL6LVYTMVVJHAPI7EMV

not attested not anchored not stored refs pending

Is the central binary system of the planetary nebula Henize 2-428 a Type Ia supernova progenitor?

Enrique Garcia-Berro, Ignasi Ribas, Juan C. Morales, Leandro G. Althaus, Noam Soker

arxiv:1503.01739 v2 · 2015-03-05 · 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{QRCL5MFXL6LVYTMVVJHAPI7EMV}

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	2026-05-18T01:23:04.176518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8444beb0b75f975c4d95aa4e07a3e465554832a55f6fefe174223b9ddc490207

Aliases

arxiv: 1503.01739 · arxiv_version: 1503.01739v2 · doi: 10.48550/arxiv.1503.01739 · pith_short_12: QRCL5MFXL6LV · pith_short_16: QRCL5MFXL6LVYTMV · pith_short_8: QRCL5MFX

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/QRCL5MFXL6LVYTMVVJHAPI7EMV \
  | 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: 8444beb0b75f975c4d95aa4e07a3e465554832a55f6fefe174223b9ddc490207

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a54500664f354427862a3df4ffabe582b0d04d9e98f66dc6dc809356c3f3429",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-03-05T19:32:09Z",
    "title_canon_sha256": "ede1e62e2b04a59b5c2cfcf2c53960526e4269f50bdb19c6ee2b38d37e2581f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01739",
    "kind": "arxiv",
    "version": 2
  }
}