Pith Number

pith:QSID6GXI

pith:2012:QSID6GXIFHQUMILU2UEDG5Y35S

not attested not anchored not stored refs pending

From Hipparcos to Gaia

D.W. Evans, L. Eyer, L. Wyrzykowski, N. Mowlavi, P. Dubath, S. Hodgkin, S. Saesen

arxiv:1202.2064 v1 · 2012-02-09 · 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{QSID6GXIFHQUMILU2UEDG5Y35S}

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	2026-05-18T01:58:31.672424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84903f1ae829e1462174d50833771bec9d3771e263eadd8e2fc49cc75ecc5419

Aliases

arxiv: 1202.2064 · arxiv_version: 1202.2064v1 · doi: 10.48550/arxiv.1202.2064 · pith_short_12: QSID6GXIFHQU · pith_short_16: QSID6GXIFHQUMILU · pith_short_8: QSID6GXI

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/QSID6GXIFHQUMILU2UEDG5Y35S \
  | 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: 84903f1ae829e1462174d50833771bec9d3771e263eadd8e2fc49cc75ecc5419

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88cefb104d8d3e88445e40e1f9d5c60b8fb60a0af32be74c473b2ec37d764804",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-02-09T17:54:48Z",
    "title_canon_sha256": "7539f89b6b9a27a33a839fe707edeb6d0aa190045b811723ee4dec081f7a2287"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2064",
    "kind": "arxiv",
    "version": 1
  }
}