Pith Number

pith:TX4G2WWW

pith:2002:TX4G2WWWOQKYUX6SELCRYSP7GW

not attested not anchored not stored refs pending

Tracing Black Hole Mergers Through Radio Lobe Morphology

David Merritt (Rutgers University), R.D. Ekers (ATNF)

arxiv:astro-ph/0208001 v1 · 2002-08-01 · 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{TX4G2WWWOQKYUX6SELCRYSP7GW}

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	2026-05-18T04:23:01.152063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9df86d5ad674158a5fd222c51c49ff358f540011674fc9fd8c6a16c6182ae002

Aliases

arxiv: astro-ph/0208001 · arxiv_version: astro-ph/0208001v1 · doi: 10.48550/arxiv.astro-ph/0208001 · pith_short_12: TX4G2WWWOQKY · pith_short_16: TX4G2WWWOQKYUX6S · pith_short_8: TX4G2WWW

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/TX4G2WWWOQKYUX6SELCRYSP7GW \
  | 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: 9df86d5ad674158a5fd222c51c49ff358f540011674fc9fd8c6a16c6182ae002

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c68eb0c91b5fdee89654ae2a221b140ccca07020823aebaae9c856a36b82f658",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-01T18:11:23Z",
    "title_canon_sha256": "7c83c54d6adadb16d6f36764fbe47f55fa01ea2fe24f87f3713dd36f51529c14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208001",
    "kind": "arxiv",
    "version": 1
  }
}