Pith Number

pith:I5M7UJG3

pith:2019:I5M7UJG3M76PFMH5IJYC74HAJV

not attested not anchored not stored refs pending

H-$\alpha$ emission in the nebular spectrum of the Type Ia supernova ASASSN-18tb

Anthony L. Piro, Doron Kushnir, J. L. Prieto, Joshua D. Simon, Juna A. Kollmeier, M. M. Phillips, Nidia Morrell, Ping Chen, Subo Dong

arxiv:1902.02251 v1 · 2019-02-06 · 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{I5M7UJG3M76PFMH5IJYC74HAJV}

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	2026-05-17T23:49:01.984485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4759fa24db67fcf2b0fd42702ff0e04d654f30451ebe4355c5022ca57b5d31f2

Aliases

arxiv: 1902.02251 · arxiv_version: 1902.02251v1 · doi: 10.48550/arxiv.1902.02251 · pith_short_12: I5M7UJG3M76P · pith_short_16: I5M7UJG3M76PFMH5 · pith_short_8: I5M7UJG3

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/I5M7UJG3M76PFMH5IJYC74HAJV \
  | 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: 4759fa24db67fcf2b0fd42702ff0e04d654f30451ebe4355c5022ca57b5d31f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c9750dec80519bd71d2f96196a340ba702534d6c3a8139779a88eda3938fd6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-02-06T16:01:57Z",
    "title_canon_sha256": "a818641ad75d7e0d95b4649e66acd148b9b25a9832f8628f8d8de88f3f69b353"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02251",
    "kind": "arxiv",
    "version": 1
  }
}