Pith Number

pith:QEJYOAKF

pith:2013:QEJYOAKFR2GPWXVTJ6DBZELMKQ

not attested not anchored not stored refs pending

GSH 90-28-17: a Possible Old Supernova Remnant

L. Xiao, M. Zhu

arxiv:1311.4622 v1 · 2013-11-19 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QEJYOAKFR2GPWXVTJ6DBZELMKQ}

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	2026-05-18T01:46:23.274378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81138701458e8cfb5eb34f861c916c540f69921f45917cdd09b5484ff8539879

Aliases

arxiv: 1311.4622 · arxiv_version: 1311.4622v1 · doi: 10.48550/arxiv.1311.4622 · pith_short_12: QEJYOAKFR2GP · pith_short_16: QEJYOAKFR2GPWXVT · pith_short_8: QEJYOAKF

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/QEJYOAKFR2GPWXVTJ6DBZELMKQ \
  | 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: 81138701458e8cfb5eb34f861c916c540f69921f45917cdd09b5484ff8539879

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86b8cb7a4d7c5c16efbfa69c7dc1eb326d441342c17c9f4577840e62b7cf0715",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-11-19T05:31:34Z",
    "title_canon_sha256": "74e3d54571d7a3400187fd7c7e966efca8572ff6f6d98712a862555c65fa5e4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4622",
    "kind": "arxiv",
    "version": 1
  }
}