Pith Number

pith:IXEXLUMN

pith:2017:IXEXLUMN5BEWSKDCKHWLJ3W5UR

not attested not anchored not stored refs pending

New metallicity calibration for Seyfert 2 galaxies based on the N2O2 index

C. S. Castro, G. F. Hagele, M. V. Cardaci, O. L. Dors

arxiv:1701.04997 v1 · 2017-01-18 · 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{IXEXLUMN5BEWSKDCKHWLJ3W5UR}

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	2026-05-18T00:51:41.014652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45c975d18de84969286251ecb4eedda443daf5eae5225a675867939d1518b300

Aliases

arxiv: 1701.04997 · arxiv_version: 1701.04997v1 · doi: 10.48550/arxiv.1701.04997 · pith_short_12: IXEXLUMN5BEW · pith_short_16: IXEXLUMN5BEWSKDC · pith_short_8: IXEXLUMN

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/IXEXLUMN5BEWSKDCKHWLJ3W5UR \
  | 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: 45c975d18de84969286251ecb4eedda443daf5eae5225a675867939d1518b300

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e05487749036a065344cd8d65e3c9dc8c92e05ba1a60396439d895bbb76a7eec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-01-18T10:11:32Z",
    "title_canon_sha256": "585a2cb13a922ee8e6b0b4af3b0a9bc365d7e09ac476eff9aa98d2107291a02b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04997",
    "kind": "arxiv",
    "version": 1
  }
}