Pith Number

pith:WRHNY576

pith:2014:WRHNY576KQQN3XHOUCJCFHCIB6

not attested not anchored not stored refs pending

The odd couple: quasars and black holes

Scott Tremaine

arxiv:1407.6363 v1 · 2014-07-23 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WRHNY576KQQN3XHOUCJCFHCIB6}

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	2026-05-18T02:46:38.850346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b44edc77fe5420dddceea092229c480fb952d9a657a96092704915ea53aa9145

Aliases

arxiv: 1407.6363 · arxiv_version: 1407.6363v1 · doi: 10.48550/arxiv.1407.6363 · pith_short_12: WRHNY576KQQN · pith_short_16: WRHNY576KQQN3XHO · pith_short_8: WRHNY576

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/WRHNY576KQQN3XHOUCJCFHCIB6 \
  | 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: b44edc77fe5420dddceea092229c480fb952d9a657a96092704915ea53aa9145

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd8a05c2fbe5e0779c360cdd35c4d065d529cbb270f174a248cb27114a882ee1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-07-23T20:00:17Z",
    "title_canon_sha256": "92a9823b1d75b70b10c1b85aae8fb97bfd2063d48e281bd4fb32a9ee6f79d911"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6363",
    "kind": "arxiv",
    "version": 1
  }
}