Pith Number

pith:QUZN2TAK

pith:2021:QUZN2TAKX2ACK5ZVG6WSCJWRY4

not attested not anchored not stored refs pending

Accretion of a clumped wind from a red supergiant donor onto a magnetar is suggested by the analysis of the XMM-Newton and NuSTAR observations of the X-ray binary 3A 1954+319

C. Ferrigno, E. Bozzo, L. Ducci, L. Oskinova

arxiv:2112.08517 v1 · 2021-12-15 · 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{QUZN2TAKX2ACK5ZVG6WSCJWRY4}

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	2026-07-05T03:45:57.611046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8532dd4c0abe8025773537ad2126d1c71db8dc42b1644e00b3dd778c591395a5

Aliases

arxiv: 2112.08517 · arxiv_version: 2112.08517v1 · doi: 10.48550/arxiv.2112.08517 · pith_short_12: QUZN2TAKX2AC · pith_short_16: QUZN2TAKX2ACK5ZV · pith_short_8: QUZN2TAK

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/QUZN2TAKX2ACK5ZVG6WSCJWRY4 \
  | 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: 8532dd4c0abe8025773537ad2126d1c71db8dc42b1644e00b3dd778c591395a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b8aea82d9d72a3bad91133f0296437268f54786044fe820b4292443359f4c86",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-12-15T22:55:45Z",
    "title_canon_sha256": "79c4686e1787f69c22e1439c182d18fd7cd7bf3b8fd5a5c9c8032acae2ff7f6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.08517",
    "kind": "arxiv",
    "version": 1
  }
}