Pith Number

pith:MKWA5X3R

pith:2019:MKWA5X3RYBGHAJB6ZPIRJYXWFO

not attested not anchored not stored refs pending

A deep X-ray view of the bare AGN Ark120. V. Spin determination from disc-Comptonisation efficiency method

A. Kubota, A. Lobban, A. Marinucci, Ballantyne, C. Done, C. Ricci, D. Farrah, D. Porquet, D. Stern, E. Nardini, F. Marin, G. Matt, J. N. Reeves, M. Koss, N. Grosso, V. Braito

arxiv:1901.01812 v1 · 2019-01-07 · 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{MKWA5X3RYBGHAJB6ZPIRJYXWFO}

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	2026-05-17T23:52:38.822114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62ac0edf71c04c70243ecbd114e2f62b9982b74f1da47489da9f33000a01465d

Aliases

arxiv: 1901.01812 · arxiv_version: 1901.01812v1 · doi: 10.48550/arxiv.1901.01812 · pith_short_12: MKWA5X3RYBGH · pith_short_16: MKWA5X3RYBGHAJB6 · pith_short_8: MKWA5X3R

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/MKWA5X3RYBGHAJB6ZPIRJYXWFO \
  | 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: 62ac0edf71c04c70243ecbd114e2f62b9982b74f1da47489da9f33000a01465d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26d42497e4e1eae3323bcbce7756e0166efb3d5dc72643a32abbc321ba94c1a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-01-07T14:04:22Z",
    "title_canon_sha256": "b1efd98f4eaad6aae9f78dc880619bf8e67750294dd221fd17cfddb51362e506"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01812",
    "kind": "arxiv",
    "version": 1
  }
}