Pith Number

pith:K7MKUECC

pith:2022:K7MKUECC3I3MOCTOK53CCRXGPH

not attested not anchored not stored refs pending

NGC 3147: a prototypical low-luminosity active galactic nucleus with double-peaked optical and ultraviolet lines

Alessandro Capetti, Ari Laor, Atharva Bagul, Marco Chiaberge, Robert Antonucci, Stefano Bianchi

arxiv:2209.01807 v1 · 2022-09-05 · astro-ph.HE · 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{K7MKUECC3I3MOCTOK53CCRXGPH}

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	2026-07-05T04:54:34.204911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57d8aa1042da36c70a6e57762146e679d96a3d9eefafd68c858b0d48eaf7a1a5

Aliases

arxiv: 2209.01807 · arxiv_version: 2209.01807v1 · doi: 10.48550/arxiv.2209.01807 · pith_short_12: K7MKUECC3I3M · pith_short_16: K7MKUECC3I3MOCTO · pith_short_8: K7MKUECC

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/K7MKUECC3I3MOCTOK53CCRXGPH \
  | 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: 57d8aa1042da36c70a6e57762146e679d96a3d9eefafd68c858b0d48eaf7a1a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cf5e2e9ce1f1c3759be4f5c83ce89ee36b7ccc2f555ff6298c8a04e4bbc68a6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-09-05T07:40:33Z",
    "title_canon_sha256": "86e49c17ad73d4eb201a711e7541f7f19cdd21685fa09e081eb2acd67cbdf0fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.01807",
    "kind": "arxiv",
    "version": 1
  }
}