Pith Number

pith:U2YCWDUW

pith:2005:U2YCWDUW7QIIWXV7O6MZYCR75F

not attested not anchored not stored refs pending

Core depletion from coalescing supermassive black holes

Alister W. Graham

arxiv:astro-ph/0503177 v1 · 2005-03-08 · 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{U2YCWDUW7QIIWXV7O6MZYCR75F}

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	2026-05-18T03:57:01.231524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6b02b0e96fc108b5ebf77999c0a3fe96bff804927f90711a1148573f5e73d3f

Aliases

arxiv: astro-ph/0503177 · arxiv_version: astro-ph/0503177v1 · doi: 10.48550/arxiv.astro-ph/0503177 · pith_short_12: U2YCWDUW7QII · pith_short_16: U2YCWDUW7QIIWXV7 · pith_short_8: U2YCWDUW

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/U2YCWDUW7QIIWXV7O6MZYCR75F \
  | 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: a6b02b0e96fc108b5ebf77999c0a3fe96bff804927f90711a1148573f5e73d3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35461165085f03ee5b14643e3749c9f86bcb70361997a432cb9705265f05d1b0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-08T10:25:51Z",
    "title_canon_sha256": "61a468799488f718cc5d9fa620d60160f14e804622f252a559c31b6e6dd13376"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503177",
    "kind": "arxiv",
    "version": 1
  }
}