Pith Number

pith:X33GY6LS

pith:2018:X33GY6LSOIEYZCW5MG2IDBSR3L

not attested not anchored not stored refs pending

Evidence for a systematic offset of -80 micro-arcseconds in the Gaia DR2 parallaxes

2), (2) Fisk University, (3) Harvard-Smithsonian Center for Astrophysics), Guillermo Torres (3) ((1) Vanderbilt University, Keivan G. Stassun (1

arxiv:1805.03526 v2 · 2018-05-08 · astro-ph.SR · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X33GY6LSOIEYZCW5MG2IDBSR3L}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:08:41.844659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bef66c797272098c8add61b4818651daf2c7d416f934c43c2156e4d0a163de1a

Aliases

arxiv: 1805.03526 · arxiv_version: 1805.03526v2 · doi: 10.48550/arxiv.1805.03526 · pith_short_12: X33GY6LSOIEY · pith_short_16: X33GY6LSOIEYZCW5 · pith_short_8: X33GY6LS

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/X33GY6LSOIEYZCW5MG2IDBSR3L \
  | 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: bef66c797272098c8add61b4818651daf2c7d416f934c43c2156e4d0a163de1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43b48d996bb7faee4abdfed06778f9c429375d4010a2ef343d4dd6079cdb440f",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-05-08T01:12:55Z",
    "title_canon_sha256": "df3c94c5de224608874b17bae32c8821187ff410730142ec938837b090584dca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03526",
    "kind": "arxiv",
    "version": 2
  }
}