Pith Number

pith:VK7JQWHK

pith:2012:VK7JQWHKYS3P2TQVLHIJU7DREF

not attested not anchored not stored refs pending

A catalog of near-IR sources found unresolved with milliarcsecond resolution

A. Richichi, F. Cusano, M. Moerchen, O. Fors

arxiv:1209.4454 v1 · 2012-09-20 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VK7JQWHKYS3P2TQVLHIJU7DREF}

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	2026-05-18T03:39:16.127799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aabe9858eac4b6fd4e1559d09a7c7121707537314f9dd69f9adf5cdbb711502e

Aliases

arxiv: 1209.4454 · arxiv_version: 1209.4454v1 · doi: 10.48550/arxiv.1209.4454 · pith_short_12: VK7JQWHKYS3P · pith_short_16: VK7JQWHKYS3P2TQV · pith_short_8: VK7JQWHK

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/VK7JQWHKYS3P2TQVLHIJU7DREF \
  | 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: aabe9858eac4b6fd4e1559d09a7c7121707537314f9dd69f9adf5cdbb711502e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff9b6076116edc5c8674b2393c1d44b4f2bd746f4057e615fec9286db9772269",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-09-20T08:28:00Z",
    "title_canon_sha256": "10dd443eb206057975846d38166291b89bbbd8769fca75299ff52acd384ad801"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4454",
    "kind": "arxiv",
    "version": 1
  }
}