Pith Number

pith:CR2X65GK

pith:2009:CR2X65GK5EQTRYKUCER7HWM2RC

not attested not anchored not stored refs pending

A Decade of SN1993J: Discovery of Wavelength Effects in the Expansion Rate

A. Alberdi, A.R. Whitney, C.J. Stockdale, C. Trigilio, E. Ros, F. Mantovani, I.I. Shapiro, I. Marti-Vidal, J.C. Guirado, J.M. Marcaide, K.W. Weiler, L. Lara, M.A. Perez-Torres, P.J. Diamond, R.A. Preston, R.A. Sramek, R.T. Schilizzi, S.D. Van Dyk

arxiv:0903.3833 v3 · 2009-03-23 · astro-ph.HE · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CR2X65GK5EQTRYKUCER7HWM2RC}

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	2026-05-18T02:14:26.630977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14757f74cae92138e1541123f3d99a88b0a08eb33e8dd9335d0d9b366236ff89

Aliases

arxiv: 0903.3833 · arxiv_version: 0903.3833v3 · doi: 10.48550/arxiv.0903.3833 · pith_short_12: CR2X65GK5EQT · pith_short_16: CR2X65GK5EQTRYKU · pith_short_8: CR2X65GK

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/CR2X65GK5EQTRYKUCER7HWM2RC \
  | 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: 14757f74cae92138e1541123f3d99a88b0a08eb33e8dd9335d0d9b366236ff89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2947a38e059d71b071d4714bcc9051577a85d8a1851b09eac7c172d31aeaafda",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-03-23T11:30:10Z",
    "title_canon_sha256": "9b9eeea0057832ed667a5f40e32717c05d4fd5d1671ea91e627b4c6ea98c5be6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3833",
    "kind": "arxiv",
    "version": 3
  }
}