Pith Number

pith:3SFSVQ2D

pith:2009:3SFSVQ2DX5643OI46TSAK2ZWJ3

not attested not anchored not stored refs pending

23 GHz VLBI Observations of SN 2008ax

A. Alberdi, A. Pedlar, C.J. Stockdale, E. Ros, I.I. Shapiro, I. Marti-Vidal, J.C. Guirado, J.M. Marcaide, K.W. Weiler, M.A. Perez-Torres, M.K. Argo, N. Panagia, R.A. Sramek, R.J. Beswick, S. Immler, S. Van Dyk, T.W.B. Muxlow

arxiv:0904.0337 v1 · 2009-04-02 · 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{3SFSVQ2DX5643OI46TSAK2ZWJ3}

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	2026-05-18T02:14:08.039118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc8b2ac343bf7dcdb91cf4e4056b364eea59f697d5f73de1d8b55eb774ff91f8

Aliases

arxiv: 0904.0337 · arxiv_version: 0904.0337v1 · doi: 10.48550/arxiv.0904.0337 · pith_short_12: 3SFSVQ2DX564 · pith_short_16: 3SFSVQ2DX5643OI4 · pith_short_8: 3SFSVQ2D

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/3SFSVQ2DX5643OI46TSAK2ZWJ3 \
  | 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: dc8b2ac343bf7dcdb91cf4e4056b364eea59f697d5f73de1d8b55eb774ff91f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0d3338f83049f4c386b405eecb0891162400eb6068cabd233062959eb582ab3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-02T08:32:15Z",
    "title_canon_sha256": "cbf133558865174547440270c4034496ab40ee90bc0e3253f6b28d62c7d556ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0337",
    "kind": "arxiv",
    "version": 1
  }
}