Pith Number

pith:VQKQ4DGB

pith:2012:VQKQ4DGBFEFD2NDMMVHRFSPSOC

not attested not anchored not stored refs pending

The Space Motion of Leo I: Hubble Space Telescope Proper Motion and Implied Orbit

(2) Columbia University, (3) UC Irvine, (4) University of Virginia), Gurtina Besla (2), James S. Bullock (3) ((1) STScI, Michael Boylan-Kolchin (3), Roeland P. van der Marel (1), Sangmo Tony Sohn (1), Steven R. Majewski (4)

arxiv:1210.6039 v2 · 2012-10-22 · 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{VQKQ4DGBFEFD2NDMMVHRFSPSOC}

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	2026-05-18T03:27:03.263070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac150e0cc1290a3d346c654f12c9f270b7ce7bbb9d1b2971b6a68b43589a4fe4

Aliases

arxiv: 1210.6039 · arxiv_version: 1210.6039v2 · doi: 10.48550/arxiv.1210.6039 · pith_short_12: VQKQ4DGBFEFD · pith_short_16: VQKQ4DGBFEFD2NDM · pith_short_8: VQKQ4DGB

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/VQKQ4DGBFEFD2NDMMVHRFSPSOC \
  | 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: ac150e0cc1290a3d346c654f12c9f270b7ce7bbb9d1b2971b6a68b43589a4fe4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "292585f45f39db10ef76e7ebd6e6d0d64f8435d4f2cfd3a70b2928b4a4360af1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-10-22T20:00:04Z",
    "title_canon_sha256": "6a7064efe10071a21eb001c4b7caaba9e2d5dddead526959f573f3b991a00288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.6039",
    "kind": "arxiv",
    "version": 2
  }
}