Pith Number

pith:63LPOUUM

pith:2008:63LPOUUMHVSADD36RIPHADWCJQ

not attested not anchored not stored refs pending

Fundamental Planes, and the "barless" M-sigma relation, for supermassive black holes

Alister W. Graham

arxiv:0801.1548 v2 · 2008-01-10 · 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{63LPOUUMHVSADD36RIPHADWCJQ}

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	2026-05-18T03:57:13.125443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6d6f7528c3d64018f7e8a1e700ec24c34415378f814fdc9598cf933b253a48a

Aliases

arxiv: 0801.1548 · arxiv_version: 0801.1548v2 · doi: 10.48550/arxiv.0801.1548 · pith_short_12: 63LPOUUMHVSA · pith_short_16: 63LPOUUMHVSADD36 · pith_short_8: 63LPOUUM

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/63LPOUUMHVSADD36RIPHADWCJQ \
  | 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: f6d6f7528c3d64018f7e8a1e700ec24c34415378f814fdc9598cf933b253a48a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ad1e02b6e73bef69dacd1753a3444ab6231d8a2566e13be937ebc59f7b1c4a9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-10T07:03:21Z",
    "title_canon_sha256": "c086a7097c8c3bbad04609b494fcb3a4af2c164edebcc50e046d732f44bdce59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.1548",
    "kind": "arxiv",
    "version": 2
  }
}