Pith Number

pith:SQ7KHSCX

pith:2013:SQ7KHSCXGTMNQBK5DTGUUQ5C4R

not attested not anchored not stored refs pending

Outflows from active galactic nuclei: The BLR-NLR metallicity correlation

Chen Hu, David Valls-Gabaud, Jack A. Baldwin, Jian-Min Wang, Jun-Qiang Ge, Pu Du, Sui-Jian Xue

arxiv:1312.3212 v1 · 2013-12-11 · astro-ph.GA · astro-ph.CO · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQ7KHSCXGTMNQBK5DTGUUQ5C4R}

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	2026-05-18T01:45:51.638361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

943ea3c85734d8d8055d1ccd4a43a2e4586199bc5e44ce4136b18e36428f433e

Aliases

arxiv: 1312.3212 · arxiv_version: 1312.3212v1 · doi: 10.48550/arxiv.1312.3212 · pith_short_12: SQ7KHSCXGTMN · pith_short_16: SQ7KHSCXGTMNQBK5 · pith_short_8: SQ7KHSCX

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/SQ7KHSCXGTMNQBK5DTGUUQ5C4R \
  | 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: 943ea3c85734d8d8055d1ccd4a43a2e4586199bc5e44ce4136b18e36428f433e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "503c48d6f141be31c6e7cbf793bc27327b95ce39d4a191439f10921b7fbd67d5",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-12-11T15:34:35Z",
    "title_canon_sha256": "9bd07848f1606114869d2eb845fc9fa7bf04e8bbecd6a83557a1ea82d6cb8df7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3212",
    "kind": "arxiv",
    "version": 1
  }
}