Pith Number

pith:IS42XHXY

pith:2012:IS42XHXYOT5MQOFCRR5L7ZS7VL

not attested not anchored not stored refs pending

Understanding Dual AGN Activation in the Nearby Universe

Ezequiel Treister, Margaret Trippe, Michael Koss, Ranjan Vasudevan, Richard Mushotzky, Sylvain Veilleux

arxiv:1201.2944 v1 · 2012-01-13 · astro-ph.HE · astro-ph.CO · 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{IS42XHXYOT5MQOFCRR5L7ZS7VL}

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	2026-05-18T01:58:49.410693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44b9ab9ef874fac838a28c7abfe65faaf1684008be1e9892e7559e61af2a4338

Aliases

arxiv: 1201.2944 · arxiv_version: 1201.2944v1 · doi: 10.48550/arxiv.1201.2944 · pith_short_12: IS42XHXYOT5M · pith_short_16: IS42XHXYOT5MQOFC · pith_short_8: IS42XHXY

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/IS42XHXYOT5MQOFCRR5L7ZS7VL \
  | 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: 44b9ab9ef874fac838a28c7abfe65faaf1684008be1e9892e7559e61af2a4338

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d5d4c13ed2b211b833a70beb00a5b0bd4237e13b0429f676f068a92b65658f8",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-01-13T21:00:04Z",
    "title_canon_sha256": "3c68121cdbde27b1651752cded32d4aac0cda4b3f06b0818b24cbc2519b1b6af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2944",
    "kind": "arxiv",
    "version": 1
  }
}