Pith Number

pith:2ZWI2H4X

pith:2026:2ZWI2H4XULOK6V2LTIROZLS6JB

not attested not anchored not stored refs pending

The atmospheric extinction curve at Lenghu site

Bo-Jun Tao, Ji-an Jiang, Jin-Sheng Qiu, Jun-Han Zhao, Lu-Lu Fan, Qing-Feng Zhu, Ting-Gui Wang, Xiao-Hui Xu, Xu Kong, Xu-Zhi Li, Xu Zhou, Yong-Quan Xue, Zheng Lou, Zhi-Yong Pu

arxiv:2606.18804 v1 · 2026-06-17 · 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{2ZWI2H4XULOK6V2LTIROZLS6JB}

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	2026-06-19T16:11:48.001367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d66c8d1f97a2dcaf574b9a22ecae5e485584004a201409d5b3ce59aa4f1638d0

Aliases

arxiv: 2606.18804 · arxiv_version: 2606.18804v1 · doi: 10.48550/arxiv.2606.18804 · pith_short_12: 2ZWI2H4XULOK · pith_short_16: 2ZWI2H4XULOK6V2L · pith_short_8: 2ZWI2H4X

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/2ZWI2H4XULOK6V2LTIROZLS6JB \
  | 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: d66c8d1f97a2dcaf574b9a22ecae5e485584004a201409d5b3ce59aa4f1638d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38b1b2480bb455c3e7475e4db96479daab3141bf16d068ca57d90d5f072c9445",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-06-17T08:16:31Z",
    "title_canon_sha256": "ddf7b54fb9c6828c4c9b700a3bfd0834a25b75983e0191693b86557fc137a5e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.18804",
    "kind": "arxiv",
    "version": 1
  }
}