Pith Number

pith:RHIDD6L6

pith:2017:RHIDD6L6HGBML2JJ3IPSHOPZQI

not attested not anchored not stored refs pending

Interstellar communication. I. Maximized data rate for lightweight space-probes

Michael Hippke

arxiv:1706.03795 v2 · 2017-06-12 · 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{RHIDD6L6HGBML2JJ3IPSHOPZQI}

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	2026-05-18T00:30:28.152711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89d031f97e3982c5e929da1f23b9f9823ec7eaa1375b652eb0e9ca1c6e82d69f

Aliases

arxiv: 1706.03795 · arxiv_version: 1706.03795v2 · doi: 10.48550/arxiv.1706.03795 · pith_short_12: RHIDD6L6HGBM · pith_short_16: RHIDD6L6HGBML2JJ · pith_short_8: RHIDD6L6

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/RHIDD6L6HGBML2JJ3IPSHOPZQI \
  | 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: 89d031f97e3982c5e929da1f23b9f9823ec7eaa1375b652eb0e9ca1c6e82d69f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f730bf2fff946fcf475ecc1c266e75ebec60eebdc116ec1bf62d599e0713bb5a",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-06-12T18:15:28Z",
    "title_canon_sha256": "b232a2bb4539bb267e74c682682dce1b920aeb20a73ba2d673e9378a85c8b0e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.03795",
    "kind": "arxiv",
    "version": 2
  }
}