Pith Number

pith:V4ON6ARB

pith:2012:V4ON6ARBV5NVW6IZMN2C3ML5GR

not attested not anchored not stored refs pending

VLBI for Gravity Probe B. III. A Limit on the Proper Motion of the "Core" of the Quasar 3C 454.3

D. E. Lebach, I. I. Shapiro, J. I. Lederman, L. Petrov, M. F. Bietenholz, M. I. Ratner, N. Bartel, R. R. Ransom

arxiv:1204.4637 v1 · 2012-04-20 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V4ON6ARBV5NVW6IZMN2C3ML5GR}

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	2026-05-18T01:57:48.129698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af1cdf0221af5b5b791963742db17d3452f03a5790efaee2e13c399b202b3e01

Aliases

arxiv: 1204.4637 · arxiv_version: 1204.4637v1 · doi: 10.48550/arxiv.1204.4637 · pith_short_12: V4ON6ARBV5NV · pith_short_16: V4ON6ARBV5NVW6IZ · pith_short_8: V4ON6ARB

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/V4ON6ARBV5NVW6IZMN2C3ML5GR \
  | 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: af1cdf0221af5b5b791963742db17d3452f03a5790efaee2e13c399b202b3e01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6710ed9e11c4a5b69a272c4d8b176c731a53694307131fc8dfb575342824803a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-04-20T14:06:51Z",
    "title_canon_sha256": "15d698fa420a25bb329e272b79d8dd07e98ca7127e3fe3d455cfe78af89b6bb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4637",
    "kind": "arxiv",
    "version": 1
  }
}