Pith Number

pith:OPYPKM5U

pith:2011:OPYPKM5UHC7EDCFFJU7TWCIOB3

not attested not anchored not stored refs pending

K-shell Emission of Neutral Iron Line from Sgr B2 Excited by Subrelativistic Protons

Dmitrii Chernyshov, Katsuji Koyama, Kwong-Sang Cheng, Masayoshi Nobukawa, Vladimir Dogiel

arxiv:1104.4484 v1 · 2011-04-22 · 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{OPYPKM5UHC7EDCFFJU7TWCIOB3}

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	2026-05-18T02:02:16.034953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73f0f533b438be4188a54d3f3b090e0ed6c91df678157b696777137dcc7ceee3

Aliases

arxiv: 1104.4484 · arxiv_version: 1104.4484v1 · doi: 10.48550/arxiv.1104.4484 · pith_short_12: OPYPKM5UHC7E · pith_short_16: OPYPKM5UHC7EDCFF · pith_short_8: OPYPKM5U

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/OPYPKM5UHC7EDCFFJU7TWCIOB3 \
  | 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: 73f0f533b438be4188a54d3f3b090e0ed6c91df678157b696777137dcc7ceee3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e783ed67bbcdb0209ed8e4f6ed2daa5bd04850b5b5d81e751885b7f175b795db",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-04-22T18:10:10Z",
    "title_canon_sha256": "461a695794d441ee6781488ccff2b4d531fe3a5b935e09555a4ca7656f77fc58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4484",
    "kind": "arxiv",
    "version": 1
  }
}