Pith Number

pith:BACSGDAZ

pith:2015:BACSGDAZCBC3TZ5SRH2WOTNYQK

not attested not anchored not stored refs pending

The search for active black holes in nearby low-mass galaxies using optical and mid-IR data

Benny Trakhtenbrot, Ezequiel Treister, Kevin Schawinski, Kyuseok Oh, Lia F. Sartori, Maryam Shirazi, Michael Koss

arxiv:1509.08483 v1 · 2015-09-28 · 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{BACSGDAZCBC3TZ5SRH2WOTNYQK}

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	2026-05-18T01:28:45.522668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0805230c191045b9e7b289f5674db88291e3233b7e28e2321a9ff2539029cedf

Aliases

arxiv: 1509.08483 · arxiv_version: 1509.08483v1 · doi: 10.48550/arxiv.1509.08483 · pith_short_12: BACSGDAZCBC3 · pith_short_16: BACSGDAZCBC3TZ5S · pith_short_8: BACSGDAZ

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/BACSGDAZCBC3TZ5SRH2WOTNYQK \
  | 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: 0805230c191045b9e7b289f5674db88291e3233b7e28e2321a9ff2539029cedf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "336366670f484dc0335a3b0744ede618ae3399207e1a19448925bfc45b33fa86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-28T20:16:14Z",
    "title_canon_sha256": "d2026e05b435ca97e06ac50593f2feafc23d7442975e668be1c98e844a4b1c94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08483",
    "kind": "arxiv",
    "version": 1
  }
}