Pith Number

pith:XJFVSHDK

pith:2018:XJFVSHDKZ5AP2RNEJP4SIPGZ6G

not attested not anchored not stored refs pending

The precious set of radio-optical reference frame objects in the light of Gaia DR2 data

Alan Fey (United States Naval Observatory), Ciprian T. Berghea, Henrique R. Schmitt (Naval Research Laboratory), Julien Frouard, Valeri V. Makarov

arxiv:1811.10117 v2 · 2018-11-25 · 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{XJFVSHDKZ5AP2RNEJP4SIPGZ6G}

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.

Cited by

1 paper in Pith

Gaia parallax bias via spherical harmonics: A Python tool and discussion of possible causes

Receipt and verification

First computed	2026-05-17T23:50:58.826291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba4b591c6acf40fd45a44bf9243cd9f1887bbc094a660b9226077eb7a93bf6d1

Aliases

arxiv: 1811.10117 · arxiv_version: 1811.10117v2 · doi: 10.48550/arxiv.1811.10117 · pith_short_12: XJFVSHDKZ5AP · pith_short_16: XJFVSHDKZ5AP2RNE · pith_short_8: XJFVSHDK

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/XJFVSHDKZ5AP2RNEJP4SIPGZ6G \
  | 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: ba4b591c6acf40fd45a44bf9243cd9f1887bbc094a660b9226077eb7a93bf6d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d43305bfc2f45bb3d5f6fa1c42734666b2f4759ad0bf97a46c3424a4da9563a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-11-25T23:34:30Z",
    "title_canon_sha256": "df9db6ffd5486f40425257abedb806bf170e58fbcd7762709aba276359923a54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.10117",
    "kind": "arxiv",
    "version": 2
  }
}