Pith Number

pith:M3NGTFFR

pith:2021:M3NGTFFRK7SQHIILSOMU5TMG6V

not attested not anchored not stored refs pending

The rare X-ray flaring activity of the Ultraluminous X-ray source NGC 4559 X7

A. Wolter, C. Pinto, C. Salvaggio, E. Ambrosi, Fabio Pintore, G. L. Israel, G. Rodriguez-Castillo, L. Zampieri, M.G. Bernardini, P. Esposito, R. Salvaterra, S. Motta

arxiv:2103.14541 v1 · 2021-03-26 · 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{M3NGTFFRK7SQHIILSOMU5TMG6V}

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	2026-07-05T02:31:55.986338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66da6994b157e503a10b93994ecd86f5589c642ef37ce6b82bb71045f65c2739

Aliases

arxiv: 2103.14541 · arxiv_version: 2103.14541v1 · doi: 10.48550/arxiv.2103.14541 · pith_short_12: M3NGTFFRK7SQ · pith_short_16: M3NGTFFRK7SQHIIL · pith_short_8: M3NGTFFR

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/M3NGTFFRK7SQHIILSOMU5TMG6V \
  | 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: 66da6994b157e503a10b93994ecd86f5589c642ef37ce6b82bb71045f65c2739

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "635a875e26b01c9d2757b6312f3ff78181167cf6217cfb12dfbb00507ebcbc27",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-03-26T15:48:37Z",
    "title_canon_sha256": "7fe0823353c62058194dfd2c088aa6d85f62036d17259e94cd3983696027dd4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.14541",
    "kind": "arxiv",
    "version": 1
  }
}