Pith Number

pith:JMBHZKG2

pith:2009:JMBHZKG2OA5RBH7Y7EJJXYAGFX

not attested not anchored not stored refs pending

The radio lightcurve of SN 2008iz in M82 revealed by Urumqi observations

A. Brunthaler, H.-G. Song, I. Marti-Vidal, J.A. Zensus, N. Marchili, P. Mueller, R. Beswick, T.P. Krichbaum, U. Bach, X. Liu

arxiv:0909.5535 v1 · 2009-09-30 · astro-ph.CO · 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{JMBHZKG2OA5RBH7Y7EJJXYAGFX}

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	2026-05-18T02:11:36.083742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b027ca8da703b109ff8f9129be0062df9e219d6a554c547001290021b062b43

Aliases

arxiv: 0909.5535 · arxiv_version: 0909.5535v1 · doi: 10.48550/arxiv.0909.5535 · pith_short_12: JMBHZKG2OA5R · pith_short_16: JMBHZKG2OA5RBH7Y · pith_short_8: JMBHZKG2

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/JMBHZKG2OA5RBH7Y7EJJXYAGFX \
  | 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: 4b027ca8da703b109ff8f9129be0062df9e219d6a554c547001290021b062b43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4b13b109bfae25ad9496ff917eb72b22fb215355d1de7a11acb4886f2fdc090",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-30T08:46:39Z",
    "title_canon_sha256": "46d046cbafacdae7de41bfe8a25801bccec32ef58a3cc6247de76153adb446af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5535",
    "kind": "arxiv",
    "version": 1
  }
}