Pith Number

pith:F2RDHB6Q

pith:2019:F2RDHB6Q6SO5MN27IK5MMLM3XH

not attested not anchored not stored refs pending

An intuitive 3D map of the Galactic warp's precession traced by classical Cepheids

Chao Liu (NAOC), Hao Tian (NAOC), Licai Deng (NAOC), Richard de Grijs (Macquarie University), Shu Wang (PKU), Xiaodian Chen (NAOC)

arxiv:1902.00998 v1 · 2019-02-04 · astro-ph.GA · 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{F2RDHB6Q6SO5MN27IK5MMLM3XH}

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	2026-05-17T23:54:51.674077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ea23387d0f49dd6375f42bac62d9bb9eeee3b3c2440d98013cd7085d13a93aa

Aliases

arxiv: 1902.00998 · arxiv_version: 1902.00998v1 · doi: 10.48550/arxiv.1902.00998 · pith_short_12: F2RDHB6Q6SO5 · pith_short_16: F2RDHB6Q6SO5MN27 · pith_short_8: F2RDHB6Q

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/F2RDHB6Q6SO5MN27IK5MMLM3XH \
  | 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: 2ea23387d0f49dd6375f42bac62d9bb9eeee3b3c2440d98013cd7085d13a93aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "939090c4a135673c37e74aa50e7fb14a3e178d23ee2c58c35bf453a6ca05dbe7",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-02-04T00:34:24Z",
    "title_canon_sha256": "ef116bb934340ca11581959a02e205973afe961522e9b6a787a2c2ef27e7e9e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00998",
    "kind": "arxiv",
    "version": 1
  }
}