Pith Number

pith:MUMMYX2U

pith:2013:MUMMYX2UYA57BS3UMIGXEXKCRD

not attested not anchored not stored refs pending

Long-term X-ray emission from Swift J1644+57

F. Y. Wang (NJU), K. S. Cheng (HKU), Y. C. Zou (HUST)

arxiv:1307.2650 v1 · 2013-07-10 · 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{MUMMYX2UYA57BS3UMIGXEXKCRD}

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	2026-05-18T01:48:52.536565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6518cc5f54c03bf0cb74620d725d4288ed4c68abeb6a10e2d044d0229192f750

Aliases

arxiv: 1307.2650 · arxiv_version: 1307.2650v1 · doi: 10.48550/arxiv.1307.2650 · pith_short_12: MUMMYX2UYA57 · pith_short_16: MUMMYX2UYA57BS3U · pith_short_8: MUMMYX2U

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/MUMMYX2UYA57BS3UMIGXEXKCRD \
  | 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: 6518cc5f54c03bf0cb74620d725d4288ed4c68abeb6a10e2d044d0229192f750

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3fb93867077e30f5feec565404885e5c439840ae0bada05b9397338ff7256ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-07-10T01:54:48Z",
    "title_canon_sha256": "cb49d5eb0deaa2b7fd10e96ca4152f129c602a3ebb87afc5a76a0ab2f0bb65a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2650",
    "kind": "arxiv",
    "version": 1
  }
}