Pith Number

pith:2EXUSKML

pith:2018:2EXUSKMLU56G6KIRL65JUSRGWB

not attested not anchored not stored refs pending

The Physics of Flash (Supernova) Spectroscopy

C. S. Kochanek (1) ((1) Department of Astronomy, The Ohio State University)

arxiv:1807.09778 v1 · 2018-07-25 · astro-ph.SR · 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{2EXUSKMLU56G6KIRL65JUSRGWB}

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	2026-05-17T23:58:04.382767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12f49298ba77c6f29115fba9a4a26b0630ae3fcca2a9553399fed569edc44fd

Aliases

arxiv: 1807.09778 · arxiv_version: 1807.09778v1 · doi: 10.48550/arxiv.1807.09778 · pith_short_12: 2EXUSKMLU56G · pith_short_16: 2EXUSKMLU56G6KIR · pith_short_8: 2EXUSKML

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/2EXUSKMLU56G6KIRL65JUSRGWB \
  | 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: d12f49298ba77c6f29115fba9a4a26b0630ae3fcca2a9553399fed569edc44fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d9d53e597f6bb3202050f9126d7e455cb7221dbb25dd7748ff29e4f1849fcb5",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-25T18:00:02Z",
    "title_canon_sha256": "e6e434383a72c59c4e3cbe10f3bc49ad16ee1ca5bd103bd83f715cd9d5f28713"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.09778",
    "kind": "arxiv",
    "version": 1
  }
}