Pith Number

pith:DYMN2HD7

pith:2021:DYMN2HD7QZJJGRSZ76CLIPKWVH

not attested not anchored not stored refs pending

Extragalactic HI 21-cm absorption line observations with the Five-hundred-meter Aperture Spherical radio Telescope

Bo Zhang, Meng-Lin Huang, Ming Zhu, Peng Jiang, Qiao-Li Hao, Qing-Zheng Yu, You-Ling Yue, Zhong-Zu Wu

arxiv:2103.06573 v1 · 2021-03-11 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DYMN2HD7QZJJGRSZ76CLIPKWVH}

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	2026-07-05T02:27:43.899379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e18dd1c7f8652934659ff84b43d56a9e8ad674d45d50bdeacfad52824686bfc

Aliases

arxiv: 2103.06573 · arxiv_version: 2103.06573v1 · doi: 10.48550/arxiv.2103.06573 · pith_short_12: DYMN2HD7QZJJ · pith_short_16: DYMN2HD7QZJJGRSZ · pith_short_8: DYMN2HD7

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/DYMN2HD7QZJJGRSZ76CLIPKWVH \
  | 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: 1e18dd1c7f8652934659ff84b43d56a9e8ad674d45d50bdeacfad52824686bfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a4cb9b15fbc3218154fea8c02f8906b731bd65ea801440d88b020869646c454",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-11T10:01:26Z",
    "title_canon_sha256": "ae6a026b17fc88dccc8287f4098fcd5ecfc4a7da036ec0e72a5fac2827a59615"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.06573",
    "kind": "arxiv",
    "version": 1
  }
}