Pith Number

pith:TPNHU3I3

pith:2021:TPNHU3I32D7PKLL6EB66EKIQ5E

not attested not anchored not stored refs pending

Discovery of Extra-Planar HI Clouds and a HI Tail in the M101 Galaxy Group with FAST

Chuan-Peng Zhang, Jie Wang, Jin-Long Xu, Ming Zhu, Naiping Yu, Peng Jiang, the FAST Collaboration, Xiao-Lan Liu, XiaoLian Liang, Xin Guan

arxiv:2109.06430 v1 · 2021-09-14 · 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{TPNHU3I32D7PKLL6EB66EKIQ5E}

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	2026-07-05T03:36:14.755926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bda7a6d1bd0fef52d7e207de22910e9211a31ee25342b229819193e37f316ce

Aliases

arxiv: 2109.06430 · arxiv_version: 2109.06430v1 · doi: 10.48550/arxiv.2109.06430 · pith_short_12: TPNHU3I32D7P · pith_short_16: TPNHU3I32D7PKLL6 · pith_short_8: TPNHU3I3

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/TPNHU3I32D7PKLL6EB66EKIQ5E \
  | 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: 9bda7a6d1bd0fef52d7e207de22910e9211a31ee25342b229819193e37f316ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "825ec021fe94516d9340cb0fa1bdced33fb638ed3dcb49c8cc62aedc04bcadc5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-14T04:39:10Z",
    "title_canon_sha256": "3ad6842090020d5b62150b96c397bbfd4ef31c9de7dd5eb3a0f245792088c599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.06430",
    "kind": "arxiv",
    "version": 1
  }
}