Pith Number

pith:GZMSITRC

pith:2021:GZMSITRC7VGFIFCG67UG6Q4H42

not attested not anchored not stored refs pending

Evolution of the spin, spectrum and super-orbital period of the ultraluminous X-ray pulsar M51 ULX7

Daniel Stern, Dominic J Walton, Felix F\"urst, Gian Luca Israel, Hannah Earnshaw, Marianne Heida, Matteo Bachetti, Murray Brightman, Sean Pike

arxiv:2111.05342 v1 · 2021-11-09 · 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{GZMSITRC7VGFIFCG67UG6Q4H42}

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	2026-07-05T03:53:10.871657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3659244e22fd4c541446f7e86f4387e69dc98998fe85916d390ef212ab00f45f

Aliases

arxiv: 2111.05342 · arxiv_version: 2111.05342v1 · doi: 10.48550/arxiv.2111.05342 · pith_short_12: GZMSITRC7VGF · pith_short_16: GZMSITRC7VGFIFCG · pith_short_8: GZMSITRC

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/GZMSITRC7VGFIFCG67UG6Q4H42 \
  | 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: 3659244e22fd4c541446f7e86f4387e69dc98998fe85916d390ef212ab00f45f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "242662e4e7e66ab8f4c73265de03fed3b098ea9ba57cce50335c704095c107f6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-11-09T19:00:01Z",
    "title_canon_sha256": "05c2f4878b07228a7a001dddf642e3cd693166ab951a5c4052f4230fd7749a91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.05342",
    "kind": "arxiv",
    "version": 1
  }
}