Pith Number

pith:WPFMBHHC

pith:2010:WPFMBHHC2K4QTBSI65GHMIXCCY

not attested not anchored not stored refs pending

On the co-evolution of supermassive black holes and their host galaxies since z = 3

Asa F. L. Bluck, Christopher J. Conselice, Elise S. Laird, Kirpal Nandra, Omar Almaini, Ruth Gruetzbauch

arxiv:1008.2162 v1 · 2010-08-12 · astro-ph.CO · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPFMBHHC2K4QTBSI65GHMIXCCY}

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	2026-05-18T02:05:48.935926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3cac09ce2d2b9098648f74c7622e21632acfeef2d741589e0c769e4fe1714de

Aliases

arxiv: 1008.2162 · arxiv_version: 1008.2162v1 · doi: 10.48550/arxiv.1008.2162 · pith_short_12: WPFMBHHC2K4Q · pith_short_16: WPFMBHHC2K4QTBSI · pith_short_8: WPFMBHHC

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/WPFMBHHC2K4QTBSI65GHMIXCCY \
  | 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: b3cac09ce2d2b9098648f74c7622e21632acfeef2d741589e0c769e4fe1714de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f69d4121b9b5067ed2d7a65bc8cc6ac9d776657866ead62e6407911614d98799",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-08-12T16:46:16Z",
    "title_canon_sha256": "8730ea8d08ba9a7131afbea0ed971cd540e75136dab5a0a872cdf9bf88989ebd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.2162",
    "kind": "arxiv",
    "version": 1
  }
}