Pith Number

pith:3K4AKF2C

pith:2018:3K4AKF2C5TRQBPS5BXJPJULVE7

not attested not anchored not stored refs pending

The Breakthrough Listen Search for Intelligent Life: No Evidence of Claimed Periodic Spectral Modulations in High Resolution Optical Spectra of Nearby Stars

Andrew P. V. Siemion, Danny C. Price, Geoffrey W. Marcy, Howard Isaacson, Jack Hickish, J. Emilio Enriquez, Nectaria Gizani

arxiv:1812.02258 v1 · 2018-12-05 · astro-ph.SR · 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{3K4AKF2C5TRQBPS5BXJPJULVE7}

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	2026-05-17T23:58:55.081897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dab8051742ece300be5d0dd2f4d17527f3548d4c1aee11d0086677a433e79808

Aliases

arxiv: 1812.02258 · arxiv_version: 1812.02258v1 · doi: 10.48550/arxiv.1812.02258 · pith_short_12: 3K4AKF2C5TRQ · pith_short_16: 3K4AKF2C5TRQBPS5 · pith_short_8: 3K4AKF2C

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/3K4AKF2C5TRQBPS5BXJPJULVE7 \
  | 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: dab8051742ece300be5d0dd2f4d17527f3548d4c1aee11d0086677a433e79808

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ed413fb37092bb50a8d1c55f1c5562b0ce2d10222eb1e65e0982a4e9897e1b9",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-12-05T22:32:03Z",
    "title_canon_sha256": "fc793a12b6c2991b36382f473d56f7152bde0b7ffb0970828a8f082e8ebdd1ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02258",
    "kind": "arxiv",
    "version": 1
  }
}