Pith Number

pith:COQDJ5CK

pith:2009:COQDJ5CK6SEQQK5R7TSTERLUON

not attested not anchored not stored refs pending

Mini-discs around spinning black holes

Andrei M. Beloborodov, Ivan Zalamea

arxiv:0906.1950 v1 · 2009-06-10 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COQDJ5CK6SEQQK5R7TSTERLUON}

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	2026-05-18T02:13:20.963906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13a034f44af489082bb1fce5324574734297d60cc92d2c40340290fdbe88a438

Aliases

arxiv: 0906.1950 · arxiv_version: 0906.1950v1 · doi: 10.48550/arxiv.0906.1950 · pith_short_12: COQDJ5CK6SEQ · pith_short_16: COQDJ5CK6SEQQK5R · pith_short_8: COQDJ5CK

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/COQDJ5CK6SEQQK5R7TSTERLUON \
  | 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: 13a034f44af489082bb1fce5324574734297d60cc92d2c40340290fdbe88a438

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcb0cbfe021635fd4e60353c86f7e2859da777ea830b6d2010758b2ed36843c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-06-10T14:39:26Z",
    "title_canon_sha256": "0bbbc902765a474fc781e48847ffab2e238270ca0f3bb443eec032cf40824cf4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1950",
    "kind": "arxiv",
    "version": 1
  }
}