Pith Number

pith:SH54UL4F

pith:1999:SH54UL4FRZIKK3IOPKZHIM5E5L

not attested not anchored not stored refs pending

Implications of a Nonthermal Origin of the Excess EUV Emission from the Coma Cluster of Galaxies

A. M. Atoyan, H. J. Voelk

arxiv:astro-ph/9912557 v1 · 1999-12-30 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SH54UL4FRZIKK3IOPKZHIM5E5L}

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	2026-07-04T16:12:04.403685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91fbca2f858e50a56d0e7ab27433a4eaea670b699e6441abe7aa347403f14720

Aliases

arxiv: astro-ph/9912557 · arxiv_version: astro-ph/9912557v1 · doi: 10.48550/arxiv.astro-ph/9912557 · pith_short_12: SH54UL4FRZIK · pith_short_16: SH54UL4FRZIKK3IO · pith_short_8: SH54UL4F

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/SH54UL4FRZIKK3IOPKZHIM5E5L \
  | 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: 91fbca2f858e50a56d0e7ab27433a4eaea670b699e6441abe7aa347403f14720

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "637030e180eea044424e32b1d2dd25383f221cd3f03775c617ee4a72a0bea958",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-30T14:38:38Z",
    "title_canon_sha256": "ec23b72e264a138173d2adb51e97f476db79395e83b704ddc911fbb9bda01ea4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912557",
    "kind": "arxiv",
    "version": 1
  }
}