Pith Number

pith:FGTIQCHP

pith:1998:FGTIQCHP5G7D3BKZL7G4ZDKRRQ

not attested not anchored not stored refs pending

The Peculiar Type Ic Supernova 1997ef: Another Hypernova

D.Balam, I.J.Danziger, J.Thorstensen, K.Iwamoto, K.Nomoto, P.A.Mazzali, P.Garnavich, R.Kirshner, S.Jha, T.Nakamura

arxiv:astro-ph/9807060 v5 · 1998-07-07 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FGTIQCHP5G7D3BKZL7G4ZDKRRQ}

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	2026-05-18T01:40:13.939238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29a68808efe9be3d85595fcdcc8d518c11515f6d481dce901e8bc79aaa05a651

Aliases

arxiv: astro-ph/9807060 · arxiv_version: astro-ph/9807060v5 · doi: 10.48550/arxiv.astro-ph/9807060 · pith_short_12: FGTIQCHP5G7D · pith_short_16: FGTIQCHP5G7D3BKZ · pith_short_8: FGTIQCHP

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/FGTIQCHP5G7D3BKZL7G4ZDKRRQ \
  | 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: 29a68808efe9be3d85595fcdcc8d518c11515f6d481dce901e8bc79aaa05a651

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1afd2086ac2ee0c89e03975d83929f297412a6af70bd08ed4b3b29506367a7cd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-07T13:55:07Z",
    "title_canon_sha256": "2d8a3139cde39c66eab681fcc851f731d5615d7408d9a2428934624d78aea6a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807060",
    "kind": "arxiv",
    "version": 5
  }
}