Pith Number

pith:QFDOAA2Y

pith:2026:QFDOAA2YLPO5QE6WZSPIH4WUND

not attested not anchored not stored refs pending

Executable verification through formalized expert reasoning in astronomical spectroscopy

Christophe Yeche, Haosong Wang, Huanyuan Shan, Jean-Paul Kneib, Jiajun Zhang, Ji Yao, Qian Zheng, Ting Tan

arxiv:2607.06128 v1 · 2026-07-07 · astro-ph.CO · 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{QFDOAA2YLPO5QE6WZSPIH4WUND}

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	2026-07-08T01:18:57.828475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8146e003585bddd813d6cc9e83f2d468c1fa2012e30f77ae40b4ee2bdf67a3f2

Aliases

arxiv: 2607.06128 · arxiv_version: 2607.06128v1 · doi: 10.48550/arxiv.2607.06128 · pith_short_12: QFDOAA2YLPO5 · pith_short_16: QFDOAA2YLPO5QE6W · pith_short_8: QFDOAA2Y

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/QFDOAA2YLPO5QE6WZSPIH4WUND \
  | 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: 8146e003585bddd813d6cc9e83f2d468c1fa2012e30f77ae40b4ee2bdf67a3f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2ccedccb96b9672afac39b74cf1f25127490bb4da109abcd7e3c97c318c395e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-07-07T10:37:34Z",
    "title_canon_sha256": "a9f2b6ea128dd32002b2670b2d252996216d1ab48d12126c3f6ea552eb66efe9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.06128",
    "kind": "arxiv",
    "version": 1
  }
}