Pith Number

pith:PXSSI6QS

pith:2008:PXSSI6QSXUPHSMAZSPJNY2CNBE

not attested not anchored not stored refs pending

A New Distance to The Antennae Galaxies (NGC 4038/39) Based on the Type Ia Supernova 2007sr

(2) Las Campanas Observatory, (3) Universidad de Chile), Barry F. Madore (1), Carlos Contreras (2), Christopher R. Burns (1), Francois Schweizer (1), Gaston Folatelli (3), Luis Boldt (2), Mario Hamuy (3), Maximilian D. Stritzinger (2) ((1) Carnegie Observatories, Miguel R. Roth (2), M.M. Phillips (2), Nidia I. Morrell (2), S.E. Persson (1), Sergio Gonzalez (2), Violet A. Mager (1), Wendy L. Freedman (1), Wojtek Krzeminski (2)

arxiv:0807.3955 v1 · 2008-07-24 · 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{PXSSI6QSXUPHSMAZSPJNY2CNBE}

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	2026-05-17T23:47:49.575984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7de5247a12bd1e79301993d2dc684d093df6a5d9ed4dd8207caab2bed9169639

Aliases

arxiv: 0807.3955 · arxiv_version: 0807.3955v1 · doi: 10.48550/arxiv.0807.3955 · pith_short_12: PXSSI6QSXUPH · pith_short_16: PXSSI6QSXUPHSMAZ · pith_short_8: PXSSI6QS

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/PXSSI6QSXUPHSMAZSPJNY2CNBE \
  | 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: 7de5247a12bd1e79301993d2dc684d093df6a5d9ed4dd8207caab2bed9169639

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25945dd996fad4ae2998ea0befe82a1af8db68d471c6ec21bf46f24d14161644",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-24T20:00:39Z",
    "title_canon_sha256": "6b36e3ee77e60f7ec74d7ffd29bf73b1ebf158c94ab91a982f46c018a5864313"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.3955",
    "kind": "arxiv",
    "version": 1
  }
}