Pith Number

pith:W6UEZVPP

pith:2015:W6UEZVPP764F2WJ6OX2DGKYWU7

not attested not anchored not stored refs pending

Spectral principal component analysis of mid-infrared spectra of a sample of PG QSOs

(2) Steward Observatory, (3) NJU), Richard Green (2), Wei-Hao Bian (1), Wen-Shuai Liu (1) ((1) NJNU, Xue Ge (1), Yong Shi (3), Zhi-Cheng He (1)

arxiv:1512.06261 v1 · 2015-12-19 · 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{W6UEZVPP764F2WJ6OX2DGKYWU7}

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	2026-05-18T01:22:19.464660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7a84cd5efffb85d593e75f4332b16a7cb74683f49ff263f0e7a123e16deaaef

Aliases

arxiv: 1512.06261 · arxiv_version: 1512.06261v1 · doi: 10.48550/arxiv.1512.06261 · pith_short_12: W6UEZVPP764F · pith_short_16: W6UEZVPP764F2WJ6 · pith_short_8: W6UEZVPP

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/W6UEZVPP764F2WJ6OX2DGKYWU7 \
  | 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: b7a84cd5efffb85d593e75f4332b16a7cb74683f49ff263f0e7a123e16deaaef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62c2c1c5178d57e01a30ffc58f99de3632d69f687ceb16a7222a61a897c3969d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-19T15:10:57Z",
    "title_canon_sha256": "62bbe647d12ba4c4e7b7481dbe9e2e0ca28097265cc5d34a9ba5a58dd2a38f9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06261",
    "kind": "arxiv",
    "version": 1
  }
}