Pith Number

pith:ZBKNWGJM

pith:2017:ZBKNWGJMYGMEXEHZ63LSBCFBDH

not attested not anchored not stored refs pending

Quasars with PV broad absorption in BOSS data release 9

Alina Streblyanska, Daniel M. Capellupo, Donald P. Schneider, Donald York, Fred Hamann, Hanna Herbst, Isabelle P\^aris, Jian Ge, Patrick Petitjean, W. Niel Brandt

arxiv:1704.07445 v1 · 2017-04-24 · 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{ZBKNWGJMYGMEXEHZ63LSBCFBDH}

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	2026-05-18T00:43:25.407569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c854db192cc1984b90f9f6d72088a119d5d8f74ac705e8717d77d785265e092a

Aliases

arxiv: 1704.07445 · arxiv_version: 1704.07445v1 · doi: 10.48550/arxiv.1704.07445 · pith_short_12: ZBKNWGJMYGME · pith_short_16: ZBKNWGJMYGMEXEHZ · pith_short_8: ZBKNWGJM

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/ZBKNWGJMYGMEXEHZ63LSBCFBDH \
  | 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: c854db192cc1984b90f9f6d72088a119d5d8f74ac705e8717d77d785265e092a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c24dc7b843951ea92dc852f1760cd2f7dcd303c6d8ae68b3c8cbab95145c7c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-04-24T20:10:21Z",
    "title_canon_sha256": "667617b9e140d7f9849dd9a1b04a50a5999d80ec6df839280839cd4cae5f5829"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07445",
    "kind": "arxiv",
    "version": 1
  }
}