Pith Number

pith:TXD5U4QM

pith:2009:TXD5U4QMCYO2QTVZSBTVBT3EDP

not attested not anchored not stored refs pending

A Search for H2O Megamasers in High-z Type-2 AGNs

Christian Henkel, Nicola Bennert, Richard Barvainis, Robert Antonucci

arxiv:0901.0567 v1 · 2009-01-05 · 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{TXD5U4QMCYO2QTVZSBTVBT3EDP}

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	2026-05-18T04:29:24.160915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dc7da720c161da84eb9906750cf641bf71d1c8d8099e74f010ce8a81a1eca91

Aliases

arxiv: 0901.0567 · arxiv_version: 0901.0567v1 · doi: 10.48550/arxiv.0901.0567 · pith_short_12: TXD5U4QMCYO2 · pith_short_16: TXD5U4QMCYO2QTVZ · pith_short_8: TXD5U4QM

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/TXD5U4QMCYO2QTVZSBTVBT3EDP \
  | 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: 9dc7da720c161da84eb9906750cf641bf71d1c8d8099e74f010ce8a81a1eca91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69d89a90fbaf578010d88a38dc0aa8eb7fa29347b7e9ed8bd82b677209dafca7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-05T22:15:12Z",
    "title_canon_sha256": "14949157173124f10618a0044551b294ca3147820042153d944b5ba247bbd9e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0567",
    "kind": "arxiv",
    "version": 1
  }
}