Pith Number

pith:4TX6QTPQ

pith:2021:4TX6QTPQ6Y6CLT2RIJBZW23UMK

not attested not anchored not stored refs pending

A Study on Universal Observation Control System And Its Application For LAMOST

Jian Li, Yong-Heng Zhao, Yuan Tian, Zheng Wang, Zi-Huang Cao

arxiv:2102.00686 v1 · 2021-02-01 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4TX6QTPQ6Y6CLT2RIJBZW23UMK}

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	2026-07-05T03:06:18.320612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4efe84df0f63c25cf5142439b6b7462818d6f92712787402dd30c4364cd2fe8

Aliases

arxiv: 2102.00686 · arxiv_version: 2102.00686v1 · doi: 10.48550/arxiv.2102.00686 · pith_short_12: 4TX6QTPQ6Y6C · pith_short_16: 4TX6QTPQ6Y6CLT2R · pith_short_8: 4TX6QTPQ

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/4TX6QTPQ6Y6CLT2RIJBZW23UMK \
  | 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: e4efe84df0f63c25cf5142439b6b7462818d6f92712787402dd30c4364cd2fe8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00f69ed9eae96310ba0522bb4d1c821d363dfbf1211a141f630c6ac2431759b8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-02-01T08:00:59Z",
    "title_canon_sha256": "553551830027d5b5f2b8b452a9bc2755f2121434104315e698b6d99fbc976543"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.00686",
    "kind": "arxiv",
    "version": 1
  }
}