Pith Number

pith:D4DDEFCZ

pith:2018:D4DDEFCZCSQC3WGVYEBETVBUW3

not attested not anchored not stored refs pending

Progenitor candidate for the type II-P supernova SN 2018aoq in NGC 4151

C. Ashall, D. O'Neill, E. Callis, M. Fraser, M. Gromadzki, N. Elias-Rosa, R. Kotak, S. A. Sim, S. Benetti, S. J. Prentice, S. J. Smartt, S. Mattila

arxiv:1812.04988 v2 · 2018-12-12 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4DDEFCZCSQC3WGVYEBETVBUW3}

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	2026-05-17T23:54:47.955510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f0632145914a02dd8d5c10249d434b6d4550fe3036ddde0716a8ca2f4719be6

Aliases

arxiv: 1812.04988 · arxiv_version: 1812.04988v2 · doi: 10.48550/arxiv.1812.04988 · pith_short_12: D4DDEFCZCSQC · pith_short_16: D4DDEFCZCSQC3WGV · pith_short_8: D4DDEFCZ

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/D4DDEFCZCSQC3WGVYEBETVBUW3 \
  | 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: 1f0632145914a02dd8d5c10249d434b6d4550fe3036ddde0716a8ca2f4719be6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "682c834a439cae89f101dc367b29a7df677e16f196e7f5faae4c0d3803aa17ba",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-12-12T15:30:18Z",
    "title_canon_sha256": "818996f5dd1cbf62bda98760b5625455d083b5033453151e938a1dbc899e2b37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.04988",
    "kind": "arxiv",
    "version": 2
  }
}