Pith Number

pith:D6WGFELZ

pith:2011:D6WGFELZAOAAPDJUBZO2E6WRUM

not attested not anchored not stored refs pending

Spectra of HB 21 supernova remnant: Evidence of spectra flattening at the low frequencies

D. Borka, D. Uro\v{s}evi\'c, V. Borka Jovanovi\'c

arxiv:1111.1887 v1 · 2011-11-08 · 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{D6WGFELZAOAAPDJUBZO2E6WRUM}

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	2026-05-18T04:09:24.506601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fac6291790380078d340e5da27ad1a31e48b639f6285f028d6e374040d30a69

Aliases

arxiv: 1111.1887 · arxiv_version: 1111.1887v1 · doi: 10.48550/arxiv.1111.1887 · pith_short_12: D6WGFELZAOAA · pith_short_16: D6WGFELZAOAAPDJU · pith_short_8: D6WGFELZ

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/D6WGFELZAOAAPDJUBZO2E6WRUM \
  | 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: 1fac6291790380078d340e5da27ad1a31e48b639f6285f028d6e374040d30a69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6063d6e34981f57a7d862ec752b4c6d10764911b491c3e7059641f9311cf3ad8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-11-08T12:38:28Z",
    "title_canon_sha256": "9c952ed6344345ce6502e50ce19f8a0d679e3523bd64616ff401e39d90340af0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1887",
    "kind": "arxiv",
    "version": 1
  }
}