Pith Number

pith:4MYOBFXQ

pith:2016:4MYOBFXQNWDWODTWP3WV7VXO6O

not attested not anchored not stored refs pending

A Nearly Naked Supermassive Black Hole

Jeremy Darling, J. J. Condon, L. Petrov, Y. Y. Kovalev

arxiv:1606.04067 v2 · 2016-06-13 · 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{4MYOBFXQNWDWODTWP3WV7VXO6O}

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	2026-05-18T00:52:55.324664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e330e096f06d87670e767eed5fd6eef3b0b133932c2993b85cff28088d507353

Aliases

arxiv: 1606.04067 · arxiv_version: 1606.04067v2 · doi: 10.48550/arxiv.1606.04067 · pith_short_12: 4MYOBFXQNWDW · pith_short_16: 4MYOBFXQNWDWODTW · pith_short_8: 4MYOBFXQ

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/4MYOBFXQNWDWODTWP3WV7VXO6O \
  | 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: e330e096f06d87670e767eed5fd6eef3b0b133932c2993b85cff28088d507353

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29e4b0d55034c4a54b36b7c5f844caf60e22ef9a4eb592a2e1ab47cfd5906567",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-06-13T19:02:57Z",
    "title_canon_sha256": "6a95a849d4e31bb7911374d304b2fc01b95069ebc042e3c9507d014683765eb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.04067",
    "kind": "arxiv",
    "version": 2
  }
}