Pith Number

pith:EOB4N6YH

pith:2019:EOB4N6YHQEVCP6QECMAZW4UWRU

not attested not anchored not stored refs pending

The Discovery of Secondary Lobes in the Seyfert Galaxy NGC 2639

Biny Sebastian, C. P. O`Dea, J. F. Gallimore, P. Kharb, S. A. Baum

arxiv:1908.09396 v1 · 2019-08-25 · 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{EOB4N6YHQEVCP6QECMAZW4UWRU}

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	2026-07-05T00:06:55.565951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2383c6fb07812a27fa0413019b72968d026acb2c8eab3714a46aedafd2fcdf84

Aliases

arxiv: 1908.09396 · arxiv_version: 1908.09396v1 · doi: 10.48550/arxiv.1908.09396 · pith_short_12: EOB4N6YHQEVC · pith_short_16: EOB4N6YHQEVCP6QE · pith_short_8: EOB4N6YH

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/EOB4N6YHQEVCP6QECMAZW4UWRU \
  | 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: 2383c6fb07812a27fa0413019b72968d026acb2c8eab3714a46aedafd2fcdf84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ea66a5fc3cda49b13fa9e4cabf9364005c85e399bc688100cbfdfab65cb7c17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-25T21:34:24Z",
    "title_canon_sha256": "42c30e76ae3dd93dc16d556c8f710ad11d4e34fe6e765789e32523aac3192249"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09396",
    "kind": "arxiv",
    "version": 1
  }
}