Pith Number

pith:5Q3PM25Z

pith:2010:5Q3PM25ZR6LMCCHZXQSDJGQ6R7

not attested not anchored not stored refs pending

Evolution of massive black hole spins

Marta Volonteri

arxiv:1002.3827 v2 · 2010-02-19 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5Q3PM25ZR6LMCCHZXQSDJGQ6R7}

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	2026-05-18T04:39:51.262184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec36f66bb98f96c108f9bc24349a1e8fdb12a22f4ba942a804b2e740525b1199

Aliases

arxiv: 1002.3827 · arxiv_version: 1002.3827v2 · doi: 10.48550/arxiv.1002.3827 · pith_short_12: 5Q3PM25ZR6LM · pith_short_16: 5Q3PM25ZR6LMCCHZ · pith_short_8: 5Q3PM25Z

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/5Q3PM25ZR6LMCCHZXQSDJGQ6R7 \
  | 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: ec36f66bb98f96c108f9bc24349a1e8fdb12a22f4ba942a804b2e740525b1199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf16b4e274d4f63d930ed1a726645ac3d479e1177d0b634c99b1fe318d6a02b7",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-02-19T21:08:02Z",
    "title_canon_sha256": "84518c70c855056638a201ceff34b4586c9b9ab715a872b74833f0c3ebac5697"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3827",
    "kind": "arxiv",
    "version": 2
  }
}