Pith Number

pith:EP4I7J63

pith:2005:EP4I7J63UMJO7RCJ5U3YKC537P

not attested not anchored not stored refs pending

A Definitive Measurement of Time Dilation in the Spectral Evolution of the Moderate-Redshift Type Ia Supernova 1997ex

A. G. Riess, A. V. Filippenko, D. C. Leonard, P. Nugent, R. J. Foley, S. Perlmutter

arxiv:astro-ph/0504481 v1 · 2005-04-21 · 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{EP4I7J63UMJO7RCJ5U3YKC537P}

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.

Cited by

1 paper in Pith

Alleviating the Hubble Tension via Cosmological Time Dilation in the meVSL Model

Receipt and verification

First computed	2026-07-04T16:52:14.531029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f88fa7dba312efc449ed37850bbbfbcd07091a49710ca0430391c52d2dbd77

Aliases

arxiv: astro-ph/0504481 · arxiv_version: astro-ph/0504481v1 · doi: 10.48550/arxiv.astro-ph/0504481 · pith_short_12: EP4I7J63UMJO · pith_short_16: EP4I7J63UMJO7RCJ · pith_short_8: EP4I7J63

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/EP4I7J63UMJO7RCJ5U3YKC537P \
  | 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: 23f88fa7dba312efc449ed37850bbbfbcd07091a49710ca0430391c52d2dbd77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "240881daae9b5f852db68ae072bbc8cf8842d0913b1f12553b9e3a71d896a7f4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-21T18:30:06Z",
    "title_canon_sha256": "d1272441efab229139513e56b8fad7bf7442244555df064337c5f439ce9bb3f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504481",
    "kind": "arxiv",
    "version": 1
  }
}