Pith Number

pith:HLUJSWOS

pith:2017:HLUJSWOSA7L4MELAFERK2B75AA

not attested not anchored not stored refs pending

Interstellar communication. II. Application to the solar gravitational lens

Michael Hippke

arxiv:1706.05570 v2 · 2017-06-17 · astro-ph.EP · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HLUJSWOSA7L4MELAFERK2B75AA}

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	2026-05-18T00:30:03.715164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ae89959d207d7c611602922ad07fd0028c86a20fd69ad9fde06f9dfcf6b09e4

Aliases

arxiv: 1706.05570 · arxiv_version: 1706.05570v2 · doi: 10.48550/arxiv.1706.05570 · pith_short_12: HLUJSWOSA7L4 · pith_short_16: HLUJSWOSA7L4MELA · pith_short_8: HLUJSWOS

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/HLUJSWOSA7L4MELAFERK2B75AA \
  | 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: 3ae89959d207d7c611602922ad07fd0028c86a20fd69ad9fde06f9dfcf6b09e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16ca2d14cb7b932dcec96feecf273232b71e6316b5d4df3232063d88433d4e40",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-06-17T18:49:21Z",
    "title_canon_sha256": "c624d99a750f47af13066ee4ba9c10c70734e806c5ea5a744b147eb516ac23b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05570",
    "kind": "arxiv",
    "version": 2
  }
}