Pith Number

pith:4KYPTSDY

pith:2013:4KYPTSDYAQJZBPSEOUH423Z737

not attested not anchored not stored refs pending

X-ray Observations of the Supernova Remnant CTB 87 (G74.9+1.2): An Evolved Pulsar Wind Nebula

H. Matheson, R. Kothes, S. Safi-Harb

arxiv:1307.1084 v1 · 2013-07-03 · astro-ph.HE · 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{4KYPTSDYAQJZBPSEOUH423Z737}

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	2026-05-18T01:49:00.126796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2b0f9c878041390be44750fcd6f3fdfede46e7c98e6ff9323371f43fbbf08e2

Aliases

arxiv: 1307.1084 · arxiv_version: 1307.1084v1 · doi: 10.48550/arxiv.1307.1084 · pith_short_12: 4KYPTSDYAQJZ · pith_short_16: 4KYPTSDYAQJZBPSE · pith_short_8: 4KYPTSDY

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/4KYPTSDYAQJZBPSEOUH423Z737 \
  | 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: e2b0f9c878041390be44750fcd6f3fdfede46e7c98e6ff9323371f43fbbf08e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8100ffd049b7bf04a0c2db88ceee6436fd43b078f6a3d0654d8feec4f300b1c2",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-07-03T17:17:22Z",
    "title_canon_sha256": "67c9d7de7039aed8a2922aefa41181e04c75e4d9d6cf533144e38cbda10697d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1084",
    "kind": "arxiv",
    "version": 1
  }
}