Pith Number

pith:26DZG566

pith:2021:26DZG5666KEG5TNPG7OL4M7GTM

not attested not anchored not stored refs pending

Multi-band observations of Swift J0840.7-3516: a new transient ultra-compact X-ray binary candidate

A. Borghese, A. de Ugarte Postigo, F. Coti Zelati, G. L. Israel, N. Rea, P. Esposito, S. Campana, T. D. Russell

arxiv:2102.07947 v2 · 2021-02-16 · 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{26DZG5666KEG5TNPG7OL4M7GTM}

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	2026-07-05T02:47:31.818498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7879377def2886ecdaf37dcbe33e69b1a9b2f95b6425ef2946f8389107dee32

Aliases

arxiv: 2102.07947 · arxiv_version: 2102.07947v2 · doi: 10.48550/arxiv.2102.07947 · pith_short_12: 26DZG5666KEG · pith_short_16: 26DZG5666KEG5TNP · pith_short_8: 26DZG566

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/26DZG5666KEG5TNPG7OL4M7GTM \
  | 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: d7879377def2886ecdaf37dcbe33e69b1a9b2f95b6425ef2946f8389107dee32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f37c70e9cb874119df937c94e34b9c4aa80ebe989e3930a785162dfa93d3808",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-02-16T03:59:46Z",
    "title_canon_sha256": "a0a7b9b8f23fda171a0a9111625c29c6b082aa0d05be0f70c64b54dfa7d15183"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07947",
    "kind": "arxiv",
    "version": 2
  }
}