Pith Number

pith:547UNCAZ

pith:2009:547UNCAZ3ACHAGMQ7GYJ5BDKGC

not attested not anchored not stored refs pending

Redshift Evolution in Black Hole-Bulge Relations: Testing CIV-based Black Hole Masses

Chien Y. Peng (NRC Herzberg Institute of Astrophysics), Jenny E. Greene (Princeton), Randi R. Ludwig (U. T. Austin)

arxiv:0911.0685 v1 · 2009-11-03 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{547UNCAZ3ACHAGMQ7GYJ5BDKGC}

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	2026-05-18T02:34:12.006584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef3f468819d804701990f9b09e846a30a58762f2cbf9fff8ceae2b2b45c5ff5f

Aliases

arxiv: 0911.0685 · arxiv_version: 0911.0685v1 · doi: 10.48550/arxiv.0911.0685 · pith_short_12: 547UNCAZ3ACH · pith_short_16: 547UNCAZ3ACHAGMQ · pith_short_8: 547UNCAZ

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/547UNCAZ3ACHAGMQ7GYJ5BDKGC \
  | 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: ef3f468819d804701990f9b09e846a30a58762f2cbf9fff8ceae2b2b45c5ff5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfc6d1719a7e73e63e173ba67394f332a1f327e2376a085cdf05438a3b0fc851",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-03T21:12:03Z",
    "title_canon_sha256": "e8aab046b1860d6a4fdf3432a89de55fc18a22908eecea6710eb1b352fcd4b32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0685",
    "kind": "arxiv",
    "version": 1
  }
}