Pith Number

pith:45DRF2NF

pith:2010:45DRF2NF2WQ2HREX5JV7WTE2OT

not attested not anchored not stored refs pending

VLBI observations of SN 2008iz: I. Expansion velocity and limits on anisotropic expansion

(2) Harvard-Smithsonian Center for Astrophysics, (3) UC Berkeley (4) Universiteit Nijmegen, 5), (5) ASTRON, (6) Tsinghua University, (7) University of Iowa), A. Brunthaler (1), A.N. Morgan (3), A. Weiss (1) ((1) Max-Planck-Institut fuer Radioastronomie, C. Henkel (1), G.C. Bower (3), H. Falcke (4, H. Feng (6), I. Marti-Vidal (1), K.M. Menten (1), M.J. Reid (2), N.R. Butler (3), P. Kaaret (7)

arxiv:1003.4665 v1 · 2010-03-24 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{45DRF2NF2WQ2HREX5JV7WTE2OT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:08:23.544238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e74712e9a5d5a1a3c497ea6bfb4c9a74f01a9ebcb0c1f48ca7e49e96babf4583

Aliases

arxiv: 1003.4665 · arxiv_version: 1003.4665v1 · doi: 10.48550/arxiv.1003.4665 · pith_short_12: 45DRF2NF2WQ2 · pith_short_16: 45DRF2NF2WQ2HREX · pith_short_8: 45DRF2NF

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/45DRF2NF2WQ2HREX5JV7WTE2OT \
  | 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: e74712e9a5d5a1a3c497ea6bfb4c9a74f01a9ebcb0c1f48ca7e49e96babf4583

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebf9b05864c90498348f1d2e229001f78af551c6138898ead73ca34ebf9ba20c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-24T15:09:34Z",
    "title_canon_sha256": "60d3e545d8c776bd5f50fc5a6008b237c5e6df071473c195754403367a5efa7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.4665",
    "kind": "arxiv",
    "version": 1
  }
}