Pith Number

pith:QTITXZZJ

pith:2011:QTITXZZJZXFTIO4MTP2EI4MXA7

not attested not anchored not stored refs pending

The Southern Proper Motion Program IV. The SPM4 Catalog

C. E. Lopez, D. Castillo, D. G. Monet, D. Herrera, D. I. Casetti-Dinescu, K. Vieira, N. Zacharias, T. C. Beers, T. M. Girard, W. F. van Altena, Y. S. Lee

arxiv:1104.5708 v2 · 2011-04-29 · 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{QTITXZZJZXFTIO4MTP2EI4MXA7}

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	2026-05-18T02:02:10.936341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84d13be729cdcb343b8c9bf444719707e0b14756537492450a1c9360d5056401

Aliases

arxiv: 1104.5708 · arxiv_version: 1104.5708v2 · doi: 10.48550/arxiv.1104.5708 · pith_short_12: QTITXZZJZXFT · pith_short_16: QTITXZZJZXFTIO4M · pith_short_8: QTITXZZJ

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/QTITXZZJZXFTIO4MTP2EI4MXA7 \
  | 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: 84d13be729cdcb343b8c9bf444719707e0b14756537492450a1c9360d5056401

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4a8c27d77668981daa0f391afaec16a5f1984150e89c4725ceaf584ff5573de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-04-29T19:41:55Z",
    "title_canon_sha256": "5e43b89221a6b72412e5949e0d432799704c157c81861986bdbf79103a7a1223"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.5708",
    "kind": "arxiv",
    "version": 2
  }
}