Pith Number

pith:EZ2A45HY

pith:2009:EZ2A45HYOGH35KVCT72OYFOBRT

not attested not anchored not stored refs pending

3D non-LTE spectrum synthesis for Type Ia supernovae

M. Kromer (1), S. A. Sim (1), W. Hillebrandt (1) ((1) MPA Garching)

arxiv:0906.2764 v1 · 2009-06-15 · 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{EZ2A45HYOGH35KVCT72OYFOBRT}

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	2026-05-18T04:33:39.933822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26740e74f8718fbeaaa29ff4ec15c18ce7708dfdf2677f66e81482fc196fcd1b

Aliases

arxiv: 0906.2764 · arxiv_version: 0906.2764v1 · doi: 10.48550/arxiv.0906.2764 · pith_short_12: EZ2A45HYOGH3 · pith_short_16: EZ2A45HYOGH35KVC · pith_short_8: EZ2A45HY

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/EZ2A45HYOGH35KVCT72OYFOBRT \
  | 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: 26740e74f8718fbeaaa29ff4ec15c18ce7708dfdf2677f66e81482fc196fcd1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bfe25621a164dd6465b908a59df6a820760ca4d373b49e5204a25919e8f96d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-06-15T19:03:15Z",
    "title_canon_sha256": "6386d44be9724274b6c16580817ec3008a5c8298b3fc1387719a463eb842b52e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2764",
    "kind": "arxiv",
    "version": 1
  }
}