Pith Number

pith:4HNMLW4N

pith:2026:4HNMLW4NMIINYL3QHZIRZ3ILFS

not attested not anchored not stored refs pending

An AGN in the Antennae galaxies ?

Fumiya Maeda, Kazuki Tokuda, Kouichiro Nakanishi, Shinya Komugi, Tomonari Michiyama, Toshiki Saito, Yoshiyuki Inoue, Yuzuki Nagashima

arxiv:2605.21879 v1 · 2026-05-21 · 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{4HNMLW4NMIINYL3QHZIRZ3ILFS}

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	2026-05-22T01:04:12.763687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1dac5db8d6210dc2f703e511ced0b2c83938ec144bff3bb0ea32e28d58a15df

Aliases

arxiv: 2605.21879 · arxiv_version: 2605.21879v1 · doi: 10.48550/arxiv.2605.21879 · pith_short_12: 4HNMLW4NMIIN · pith_short_16: 4HNMLW4NMIINYL3Q · pith_short_8: 4HNMLW4N

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/4HNMLW4NMIINYL3QHZIRZ3ILFS \
  | 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: e1dac5db8d6210dc2f703e511ced0b2c83938ec144bff3bb0ea32e28d58a15df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b94df95e5330a7100f6d7790eed9657e263647336945e7362de19df2bf2ae22",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-21T01:41:58Z",
    "title_canon_sha256": "04fc4213b453b5f365b000f73b7f2bf8ea567031e21ab84ca020a7ce7dc39dbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21879",
    "kind": "arxiv",
    "version": 1
  }
}