Pith Number

pith:DL7ZKA6A

pith:2018:DL7ZKA6AZSYAVO3NXD3Y4IXZGK

not attested not anchored not stored refs pending

The first 48: Discovery and progenitor constraints on the Type Ia supernova 2013gy

A. Campillay, A. Piro, A. V. Filippenko, B. J. Shappee, C. Ashall, C. Contreras, C. Corco, C. R. Burns, E. Baron, E. Y. Hsiao, F. Taddia, J. Anais, J.-J. Zhang, K. Krisciunas, L. Tomasella, M. A. Tucker, M. D. Stritzinger, M. Huber, M. M. Phillips, M. T. B. Nielsen, N. Morrell, P. Hoeflich, S. Castellon, S. E. Persson, S. Holmbo, T.-M. Zhang, W. Zheng, X. F. Wang, X.-L. Zhao

arxiv:1809.01359 v1 · 2018-09-05 · 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{DL7ZKA6AZSYAVO3NXD3Y4IXZGK}

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	2026-07-04T23:50:12.513019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1aff9503c0ccb00abb6db8f78e22f932896b07e535b70696c1ce8c341ddddc57

Aliases

arxiv: 1809.01359 · arxiv_version: 1809.01359v1 · doi: 10.48550/arxiv.1809.01359 · pith_short_12: DL7ZKA6AZSYA · pith_short_16: DL7ZKA6AZSYAVO3N · pith_short_8: DL7ZKA6A

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/DL7ZKA6AZSYAVO3NXD3Y4IXZGK \
  | 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: 1aff9503c0ccb00abb6db8f78e22f932896b07e535b70696c1ce8c341ddddc57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03c567e4d639d9d752c1d5ae0f0bbebcb79044bd4cf8bf1445c21580450001e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-09-05T07:37:22Z",
    "title_canon_sha256": "e314149564420e444a51c28a012dcac9b937b9a60bcc27a43436802e5c91e28f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01359",
    "kind": "arxiv",
    "version": 1
  }
}