Pith Number

pith:NK4ORQF6

pith:2025:NK4ORQF6HNTVQD365SJELFD5P6

not attested not anchored not stored refs pending

Quasar identifications from the slitless spectra: a test from 3D-HST

Qinchun Ma, Rui Zhu, Tao Ji, Xiaotong Feng, Xue-Bing Wu, Yuming Fu, Yuxuan Pang

arxiv:2505.14025 v1 · 2025-05-20 · 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{NK4ORQF6HNTVQD365SJELFD5P6}

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	2026-07-05T11:05:54.938521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ab8e8c0be3b67580f7eec9245947d7fbb45e66f94b7c8045fa831523b3f9497

Aliases

arxiv: 2505.14025 · arxiv_version: 2505.14025v1 · doi: 10.48550/arxiv.2505.14025 · pith_short_12: NK4ORQF6HNTV · pith_short_16: NK4ORQF6HNTVQD36 · pith_short_8: NK4ORQF6

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/NK4ORQF6HNTVQD365SJELFD5P6 \
  | 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: 6ab8e8c0be3b67580f7eec9245947d7fbb45e66f94b7c8045fa831523b3f9497

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c007069d0fc2b1a7388351e095b556bf98b2994a176616d45c31b99c46984029",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-05-20T07:27:27Z",
    "title_canon_sha256": "7bd84c30fb29efaab1437a58eec5f4d57539ea8f227f00ed6df37c6b2c689db8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.14025",
    "kind": "arxiv",
    "version": 1
  }
}