Pith Number

pith:6P4QN2KQ

pith:2014:6P4QN2KQ3HDRJSC5IRY7KYQQ5Z

not attested not anchored not stored refs pending

A mass of less than 15 solar masses for the black hole in an ultraluminous X-ray source

C. Motch, F. Gris\'e, G. Pietrzy\'nski, M. W. Pakull, R. Soria

arxiv:1410.4250 v1 · 2014-10-15 · 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{6P4QN2KQ3HDRJSC5IRY7KYQQ5Z}

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	2026-05-18T01:41:48.036922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3f906e950d9c714c85d4471f56210ee7f2934bffb21bbb24b4f14f096f2b48f

Aliases

arxiv: 1410.4250 · arxiv_version: 1410.4250v1 · doi: 10.48550/arxiv.1410.4250 · pith_short_12: 6P4QN2KQ3HDR · pith_short_16: 6P4QN2KQ3HDRJSC5 · pith_short_8: 6P4QN2KQ

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/6P4QN2KQ3HDRJSC5IRY7KYQQ5Z \
  | 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: f3f906e950d9c714c85d4471f56210ee7f2934bffb21bbb24b4f14f096f2b48f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be9b4110cd33e6db16df7b8ed8a384e0d2497f25875523d0daff339b398e8d39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-10-15T22:41:47Z",
    "title_canon_sha256": "4ab03b153dbaa2cb869ed1920c5a68bc3f14a0611cad4c9b167217532e93d903"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.4250",
    "kind": "arxiv",
    "version": 1
  }
}