Pith Number

pith:CKAJYGGA

pith:2007:CKAJYGGA4D4J6NUF7NZYSXKBGP

not attested not anchored not stored refs pending

The Mass Function of Active Black Holes in the Local Universe

Jenny E. Greene (Princeton), Luis C. Ho (Carnegie Observatories)

arxiv:0705.0020 v1 · 2007-04-30 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CKAJYGGA4D4J6NUF7NZYSXKBGP}

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	2026-05-18T04:29:33.948096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12809c18c0e0f89f3685fb73895d4133e2c1b294b794192fae717191dc8145df

Aliases

arxiv: 0705.0020 · arxiv_version: 0705.0020v1 · doi: 10.48550/arxiv.0705.0020 · pith_short_12: CKAJYGGA4D4J · pith_short_16: CKAJYGGA4D4J6NUF · pith_short_8: CKAJYGGA

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/CKAJYGGA4D4J6NUF7NZYSXKBGP \
  | 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: 12809c18c0e0f89f3685fb73895d4133e2c1b294b794192fae717191dc8145df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa682b93441dcef39db9bed70ecf33d83d18b0a57d6a51002595925737a7c83f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-30T21:40:31Z",
    "title_canon_sha256": "c582ff57e080b7fe5db771476498b9c4f2d5702895fc87dab43a2faa9d3673e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.0020",
    "kind": "arxiv",
    "version": 1
  }
}