Pith Number

pith:V242JEB7

pith:2018:V242JEB7CE6HV2O7VQZ23DXNRA

not attested not anchored not stored refs pending

Narrow-line Seyfert 1s: what is wrong in a name?

A. Del Olmo, C. A. Negrete, D.Dultzin, E.Bon, G. M. Stirpe, M. D' Onofrio, M. L. Martiinez-Aldama, N. Bon, P. Marziani

arxiv:1807.03003 v1 · 2018-07-09 · 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{V242JEB7CE6HV2O7VQZ23DXNRA}

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	2026-05-18T00:11:13.118674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aeb9a4903f113c7ae9dfac33ad8eed881fe5b686fd2c84c07465333eefa54a08

Aliases

arxiv: 1807.03003 · arxiv_version: 1807.03003v1 · doi: 10.48550/arxiv.1807.03003 · pith_short_12: V242JEB7CE6H · pith_short_16: V242JEB7CE6HV2O7 · pith_short_8: V242JEB7

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/V242JEB7CE6HV2O7VQZ23DXNRA \
  | 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: aeb9a4903f113c7ae9dfac33ad8eed881fe5b686fd2c84c07465333eefa54a08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1d53ee3ef59c55c95edfb5d92bdada4ac7c249a4a59d618e53472f05410cae3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-09T09:25:45Z",
    "title_canon_sha256": "3fd85a8ef0b26cf22b2b4c386ca7b3cd95b6b91565674bf76132fae1c77fff27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03003",
    "kind": "arxiv",
    "version": 1
  }
}