Pith Number

pith:YB22OBTG

pith:2012:YB22OBTG4ZU3B2XG527SBL47AT

not attested not anchored not stored refs pending

Searching for extraterrestrial intelligence signals in astronomical spectra, including existing data

Ermanno F. Borra

arxiv:1210.5986 v1 · 2012-10-22 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YB22OBTG4ZU3B2XG527SBL47AT}

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	2026-05-18T01:53:44.822337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c075a70666e669b0eae6eebf20af9f04de5c2159fc18809f2ceb9a2148ac7d99

Aliases

arxiv: 1210.5986 · arxiv_version: 1210.5986v1 · doi: 10.48550/arxiv.1210.5986 · pith_short_12: YB22OBTG4ZU3 · pith_short_16: YB22OBTG4ZU3B2XG · pith_short_8: YB22OBTG

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/YB22OBTG4ZU3B2XG527SBL47AT \
  | 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: c075a70666e669b0eae6eebf20af9f04de5c2159fc18809f2ceb9a2148ac7d99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aadbdc881d0818cb74a370c6abafb7ec1568eb078cac0377f450658ab41069ab",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-10-22T18:02:28Z",
    "title_canon_sha256": "dea74f51a7c3edd6bacede3d75544ddf42e74e2aff271eda89040caee99321b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5986",
    "kind": "arxiv",
    "version": 1
  }
}