Pith Number

pith:PN33J4HY

pith:2019:PN33J4HYBPOM7IOBGQCEARUISO

not attested not anchored not stored refs pending

Chandra, MDM, Swift, and NuSTAR observations confirming the SFXT nature of AX J1949.8+2534

Farid Rahoui, Jeremy Hare, John A. Tomsick, Jonathan E. Grindlay, Jules P. Halpern, Maica Clavel

arxiv:1904.09762 v1 · 2019-04-22 · 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{PN33J4HYBPOM7IOBGQCEARUISO}

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	2026-05-17T23:43:34.518363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b77b4f0f80bdccfa1c134044046889397e2912e1bba1c7b038c68401225ff5e

Aliases

arxiv: 1904.09762 · arxiv_version: 1904.09762v1 · doi: 10.48550/arxiv.1904.09762 · pith_short_12: PN33J4HYBPOM · pith_short_16: PN33J4HYBPOM7IOB · pith_short_8: PN33J4HY

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/PN33J4HYBPOM7IOBGQCEARUISO \
  | 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: 7b77b4f0f80bdccfa1c134044046889397e2912e1bba1c7b038c68401225ff5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab44e82af6ab93d64f9b50cf37e63a477e826b2f7b428929e1457144d10e2e5e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-04-22T08:00:15Z",
    "title_canon_sha256": "04c6392ba41b97bc63510d4addac10cd11af0ea190773329f147a1485f9ee9d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09762",
    "kind": "arxiv",
    "version": 1
  }
}