Pith Number

pith:KQZ3ZHS3

pith:2017:KQZ3ZHS3QIYSZUBDWAXSE3P7XF

not attested not anchored not stored refs pending

Quasar 2175 {\AA} dust absorbers I: metallicity, depletion pattern, and kinematics

Donald P. Schneider, Jian Ge, Jingzhe Ma, J. Xavier Prochaska, Shaohua Zhang, Tuo Ji, Yinan Zhao

arxiv:1708.04200 v1 · 2017-08-14 · 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{KQZ3ZHS3QIYSZUBDWAXSE3P7XF}

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	2026-05-18T00:34:17.526431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5433bc9e5b82312cd023b02f226dffb951f4d2af33ebe34675218de526712a82

Aliases

arxiv: 1708.04200 · arxiv_version: 1708.04200v1 · doi: 10.48550/arxiv.1708.04200 · pith_short_12: KQZ3ZHS3QIYS · pith_short_16: KQZ3ZHS3QIYSZUBD · pith_short_8: KQZ3ZHS3

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/KQZ3ZHS3QIYSZUBDWAXSE3P7XF \
  | 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: 5433bc9e5b82312cd023b02f226dffb951f4d2af33ebe34675218de526712a82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0053f4f6f7f5210baf990b38ff70afb1d45fb9dc51c9fcd4c0769cb4730b6702",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-08-14T16:37:46Z",
    "title_canon_sha256": "920b7c7024616752652e5dd8f433958f75e1556f97c4c3650e7a29414bf3dde9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04200",
    "kind": "arxiv",
    "version": 1
  }
}