Pith Number

pith:LWFQF5GH

pith:2019:LWFQF5GHOCLPARHWQO7TK5DXCQ

not attested not anchored not stored refs pending

Gaia DR2 reveals a star formation burst in the disc 2-3 Gyr ago

A.C. Robin, F. Figueras, R. Mor, S. Roca-F\`abrega, X.Luri

arxiv:1901.07564 v4 · 2019-01-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LWFQF5GHOCLPARHWQO7TK5DXCQ}

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	2026-05-17T23:49:39.507036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d8b02f4c77096f044f683bf357477143b6eac46db11f10f692f4b18e7bc2a7a

Aliases

arxiv: 1901.07564 · arxiv_version: 1901.07564v4 · doi: 10.48550/arxiv.1901.07564 · pith_short_12: LWFQF5GHOCLP · pith_short_16: LWFQF5GHOCLPARHW · pith_short_8: LWFQF5GH

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/LWFQF5GHOCLPARHWQO7TK5DXCQ \
  | 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: 5d8b02f4c77096f044f683bf357477143b6eac46db11f10f692f4b18e7bc2a7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53de45868f47ab8695f56a9ccc047eb67025a322536e1cb036f430bb6143d3df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-22T19:00:01Z",
    "title_canon_sha256": "4a8b5358dd6b127589e1ca3d0ce6d573eef4da16d2e70caf0453ebf157c6661f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07564",
    "kind": "arxiv",
    "version": 4
  }
}