Pith Number

pith:2JOIIGVJ

pith:1999:2JOIIGVJLPABJP5VQBPESI4DCB

not attested not anchored not stored refs pending

The radio emission from the Galaxy at 22 MHz

C.H.Costain, C.M.Swerdlyk, R.S.Roger, T.L.Landecker

arxiv:astro-ph/9902213 v1 · 1999-02-15 · 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{2JOIIGVJLPABJP5VQBPESI4DCB}

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.

Cited by

1 paper in Pith

Constraints on Primordial Black Holes from Galactic Diffuse Synchrotron Emissions

Receipt and verification

First computed	2026-07-04T16:10:42.804255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d25c841aa95bc014bfb5805e49238310655b4a2ab637cc7d5508b65c9978dc21

Aliases

arxiv: astro-ph/9902213 · arxiv_version: astro-ph/9902213v1 · doi: 10.48550/arxiv.astro-ph/9902213 · pith_short_12: 2JOIIGVJLPAB · pith_short_16: 2JOIIGVJLPABJP5V · pith_short_8: 2JOIIGVJ

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/2JOIIGVJLPABJP5VQBPESI4DCB \
  | 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: d25c841aa95bc014bfb5805e49238310655b4a2ab637cc7d5508b65c9978dc21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff7c981ad29d75fd487505718040450835b91eddb4952a9c70d39823424c8008",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-15T17:28:16Z",
    "title_canon_sha256": "02db329cc9629951a23777c94c23f96e9b14475e474c018ffd455a39527bbdc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902213",
    "kind": "arxiv",
    "version": 1
  }
}