Pith Number

pith:RGUTYQPQ

pith:2017:RGUTYQPQEC5KTQLTMGIPYOIP32

not attested not anchored not stored refs pending

The Spin of the Supermassive Black Hole in MCG-05-23-16

Cosimo Bambi, Matteo Guainazzi, M. Ghasemi-Nodehi, Yu Wang

arxiv:1703.07182 v2 · 2017-03-21 · 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{RGUTYQPQEC5KTQLTMGIPYOIP32}

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	2026-05-18T00:06:26.584679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89a93c41f020baa9c1736190fc390fde998b352f745869b06e8a55ac5c253bd8

Aliases

arxiv: 1703.07182 · arxiv_version: 1703.07182v2 · doi: 10.48550/arxiv.1703.07182 · pith_short_12: RGUTYQPQEC5K · pith_short_16: RGUTYQPQEC5KTQLT · pith_short_8: RGUTYQPQ

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/RGUTYQPQEC5KTQLTMGIPYOIP32 \
  | 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: 89a93c41f020baa9c1736190fc390fde998b352f745869b06e8a55ac5c253bd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "539201be1da49e55c6a2ae58eedee0fe5eae299fa8fd4fab1dc7af8b0973402d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-03-21T12:44:58Z",
    "title_canon_sha256": "00c2a0dd87c6478f3a7bf90cea615e3d04169a08938687c619382fdfdbeafaf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07182",
    "kind": "arxiv",
    "version": 2
  }
}