Pith Number

pith:MEXZWPHA

pith:2012:MEXZWPHAM4LYFFDNLGTGUX6VGR

not attested not anchored not stored refs pending

Radio sky and the right to observe it

Paul Banks, Sergei Gulyaev

arxiv:1212.5856 v1 · 2012-12-24 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MEXZWPHAM4LYFFDNLGTGUX6VGR}

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	2026-05-18T03:37:51.216765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

612f9b3ce0671782946d59a66a5fd53467fc754be0d2a235d1d383933987ff58

Aliases

arxiv: 1212.5856 · arxiv_version: 1212.5856v1 · doi: 10.48550/arxiv.1212.5856 · pith_short_12: MEXZWPHAM4LY · pith_short_16: MEXZWPHAM4LYFFDN · pith_short_8: MEXZWPHA

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/MEXZWPHAM4LYFFDNLGTGUX6VGR \
  | 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: 612f9b3ce0671782946d59a66a5fd53467fc754be0d2a235d1d383933987ff58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec4f05e0ec606aaf354288320124e8f94154002268225c2fa19248f6bb77594e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-12-24T02:43:54Z",
    "title_canon_sha256": "4a567291041a5cae85df37f322c3712f43ffa866e9747197f6c70870fa8f0fa8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5856",
    "kind": "arxiv",
    "version": 1
  }
}