Pith Number

pith:HUFJFCFE

pith:2018:HUFJFCFESLZREYWDDY2NF47D42

not attested not anchored not stored refs pending

NASA and the Search for Technosignatures: A Report from the NASA Technosignatures Workshop

NASA Technosignatures Workshop Participants

arxiv:1812.08681 v2 · 2018-12-20 · astro-ph.IM · astro-ph.EP · physics.pop-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{HUFJFCFESLZREYWDDY2NF47D42}

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

4 papers in Pith

Technosignatures in the Thermal Infrared

Searches for Technosignatures in Astronomy and Astrophysics

The Social Sciences Interdisciplinarity for Astronomy and Astrophysics -- Lessons from the History of NASA and Related Fields

Searches for Technosignatures: The State of the Profession

Receipt and verification

First computed	2026-05-17T23:55:28.555194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d0a9288a492f31262c31e34d2f3e3e6a3f91fd357bf85b32f5b2b524389e115

Aliases

arxiv: 1812.08681 · arxiv_version: 1812.08681v2 · doi: 10.48550/arxiv.1812.08681 · pith_short_12: HUFJFCFESLZR · pith_short_16: HUFJFCFESLZREYWD · pith_short_8: HUFJFCFE

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/HUFJFCFESLZREYWDDY2NF47D42 \
  | 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: 3d0a9288a492f31262c31e34d2f3e3e6a3f91fd357bf85b32f5b2b524389e115

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2f9b07e515eef22f9f2325d0b2bb4771ecdc6b733405326c1d00a3eb5381574",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-12-20T16:31:39Z",
    "title_canon_sha256": "c727649d0b64a47498ab346fe74f19b3781f7cfa3444ac873b1ab0a49a0b36d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.08681",
    "kind": "arxiv",
    "version": 2
  }
}