Pith Number

pith:ERKYOOIR

pith:2009:ERKYOOIR72SEGYZRZHDR3XVY3Y

not attested not anchored not stored refs pending

Spectral analysis of the 91bg-like Type Ia SN 2005bl: Low luminosity, low velocities, incomplete burning

Paolo A. Mazzali, Ruediger Pakmor, Stefan Taubenberger, Stephan Hachinger, Wolfgang Hillebrandt

arxiv:0907.2542 v3 · 2009-07-15 · 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{ERKYOOIR72SEGYZRZHDR3XVY3Y}

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	2026-05-18T03:37:53.562453Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2455873911fea4436331c9c71ddeb8de319699bd7be52aa5582c876996d2bbcd

Aliases

arxiv: 0907.2542 · arxiv_version: 0907.2542v3 · doi: 10.48550/arxiv.0907.2542 · pith_short_12: ERKYOOIR72SE · pith_short_16: ERKYOOIR72SEGYZR · pith_short_8: ERKYOOIR

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/ERKYOOIR72SEGYZRZHDR3XVY3Y \
  | 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: 2455873911fea4436331c9c71ddeb8de319699bd7be52aa5582c876996d2bbcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adf8f1fb0d4064748b84981aad72e7b6f82e052db5bf9eef21b5e4bd12b65406",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-07-15T09:58:09Z",
    "title_canon_sha256": "2527bd6e2005cb10e28421544900a2390cafd11a8e1bce1a4303b6773a9da865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2542",
    "kind": "arxiv",
    "version": 3
  }
}