Pith Number

pith:ZVTUL6ON

pith:2013:ZVTUL6ONHMDFUGY6XFLCLX6SO6

not attested not anchored not stored refs pending

The Most Precise Extra-Galactic Black-Hole Mass Measurement

Andrew Gould (OSU)

arxiv:1303.0834 v1 · 2013-03-04 · 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{ZVTUL6ONHMDFUGY6XFLCLX6SO6}

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	2026-05-18T03:31:53.637151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd6745f9cd3b065a1b1eb95625dfd277820efd32bb4fac9c7912fd21de165011

Aliases

arxiv: 1303.0834 · arxiv_version: 1303.0834v1 · doi: 10.48550/arxiv.1303.0834 · pith_short_12: ZVTUL6ONHMDF · pith_short_16: ZVTUL6ONHMDFUGY6 · pith_short_8: ZVTUL6ON

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/ZVTUL6ONHMDFUGY6XFLCLX6SO6 \
  | 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: cd6745f9cd3b065a1b1eb95625dfd277820efd32bb4fac9c7912fd21de165011

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dff0baf262fd8d9bd0dd62d69da43954c9b82babf0d8a768df726debda98808",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-04T21:00:00Z",
    "title_canon_sha256": "acaa91caeb3ffc4743355067b90830b5abd4d11e6ea538c97263107e3202cf86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.0834",
    "kind": "arxiv",
    "version": 1
  }
}