Pith Number

pith:UMSTZQDV

pith:2026:UMSTZQDV2OYRG5EBYLNQEADTBO

not attested not anchored not stored refs pending

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

Ciprian T. Berghea, Valeri V. Makarov

arxiv:2608.12619 v1 · 2026-08-12 · astro-ph.GA · astro-ph.CO · 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{UMSTZQDV2OYRG5EBYLNQEADTBO}

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	2026-08-14T00:46:08.524957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3253cc075d3b1137481c2db0200730b91c1757bdf2061a3b066d24c5f5cd7e7

Aliases

arxiv: 2608.12619 · arxiv_version: 2608.12619v1 · doi: 10.48550/arxiv.2608.12619 · pith_short_12: UMSTZQDV2OYR · pith_short_16: UMSTZQDV2OYRG5EB · pith_short_8: UMSTZQDV

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/UMSTZQDV2OYRG5EBYLNQEADTBO \
  | 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: a3253cc075d3b1137481c2db0200730b91c1757bdf2061a3b066d24c5f5cd7e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a91289247805d314299364c2eb18abebc226c11d69a122a982f3f6ea44f008bf",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-08-12T22:01:58Z",
    "title_canon_sha256": "f61915101999c20c4f565af0d370663874cf23caf4f155529a748697f33ba965"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.12619",
    "kind": "arxiv",
    "version": 1
  }
}