Pith Number

pith:UDC3VJHQ

pith:2019:UDC3VJHQRZLENZKVUFCSOKXO3S

not attested not anchored not stored refs pending

Recognition of M-type stars in the unclassified spectra of LAMOST DR5 using a hash learning method

A.-L. Luo, B. Du, F. Zuo, J.-J. Chen, S. Zhang, X. Kong, Y.-F. Wang, Y.-H. Hou, Y.-X. Guo

arxiv:1902.03496 v1 · 2019-02-09 · astro-ph.IM · 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{UDC3VJHQRZLENZKVUFCSOKXO3S}

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	2026-05-17T23:51:29.988654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0c5baa4f08e5646e555a145272aeedc9f2796faddc38ddc01f9220e59c67e6c

Aliases

arxiv: 1902.03496 · arxiv_version: 1902.03496v1 · doi: 10.48550/arxiv.1902.03496 · pith_short_12: UDC3VJHQRZLE · pith_short_16: UDC3VJHQRZLENZKV · pith_short_8: UDC3VJHQ

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/UDC3VJHQRZLENZKVUFCSOKXO3S \
  | 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: a0c5baa4f08e5646e555a145272aeedc9f2796faddc38ddc01f9220e59c67e6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7e8aecb13583fc4812ce85fd8d310df5e423f4ef773a6ff41cd6caad678a145",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-02-09T21:34:29Z",
    "title_canon_sha256": "37b97c60244ed132ea720b85f14612fe648be17b36b5efbffcb01b73325e53c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03496",
    "kind": "arxiv",
    "version": 1
  }
}