Pith Number

pith:ZKJFWVNJ

pith:2019:ZKJFWVNJVCOASMSBIVIXQ6JY5L

not attested not anchored not stored refs pending

Spectral and morphological study of the gamma radiation of the middle-aged supernova remnant HB 21

E. de Ona Wilhelmi, F. Aharonian, G. Peron, L. Ambrogi, R. Zanin, S. Casanova

arxiv:1902.06064 v1 · 2019-02-16 · 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{ZKJFWVNJVCOASMSBIVIXQ6JY5L}

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	2026-05-17T23:53:46.690005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca925b55a9a89c0932414551787938eac227e70319c4f26995220b6b73775505

Aliases

arxiv: 1902.06064 · arxiv_version: 1902.06064v1 · doi: 10.48550/arxiv.1902.06064 · pith_short_12: ZKJFWVNJVCOA · pith_short_16: ZKJFWVNJVCOASMSB · pith_short_8: ZKJFWVNJ

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/ZKJFWVNJVCOASMSBIVIXQ6JY5L \
  | 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: ca925b55a9a89c0932414551787938eac227e70319c4f26995220b6b73775505

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9eb942bfabecd0dbfae37b5a8370d450e36c938458e1ca6ffafba6f2c433f5be",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-02-16T08:12:10Z",
    "title_canon_sha256": "0ac364de8107fa3a6f3fce6520dec7df77c96eea08949f32b24f83f19f5ae846"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06064",
    "kind": "arxiv",
    "version": 1
  }
}