Pith Number

pith:G7GEGXDG

pith:2015:G7GEGXDG3DKXW5ACVGTM37UNDQ

not attested not anchored not stored refs pending

Spectral variability in Swift and Chandra observations of the Ultraluminous source NGC 55 ULX1

A. Wolter, F. Pintore, L. Zampieri, P. Esposito, S. Motta

arxiv:1501.01160 v1 · 2015-01-06 · astro-ph.HE · 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{G7GEGXDG3DKXW5ACVGTM37UNDQ}

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	2026-05-18T01:41:14.335056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37cc435c66d8d57b7402a9a6cdfe8d1c0db239af738def27552b4effd1fdac22

Aliases

arxiv: 1501.01160 · arxiv_version: 1501.01160v1 · doi: 10.48550/arxiv.1501.01160 · pith_short_12: G7GEGXDG3DKX · pith_short_16: G7GEGXDG3DKXW5AC · pith_short_8: G7GEGXDG

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/G7GEGXDG3DKXW5ACVGTM37UNDQ \
  | 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: 37cc435c66d8d57b7402a9a6cdfe8d1c0db239af738def27552b4effd1fdac22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39a7f26db4d51ed998d42ef5c1aa85cf614c813953782c0b479cec84c4b2548d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-01-06T12:34:38Z",
    "title_canon_sha256": "a4f02f0f0d90ff98e7cbabb51b53a09fe6b7140ce2f5903f70fdbc78c3ab05d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01160",
    "kind": "arxiv",
    "version": 1
  }
}