Pith Number

pith:UG5ZJHLR

pith:2018:UG5ZJHLRIRHWEY6IMNZ54SIHKD

not attested not anchored not stored refs pending

A Robotic "Social Media" Controlled Observatory for Education and Research

David Lane

arxiv:1802.01440 v1 · 2018-02-01 · physics.ed-ph · 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{UG5ZJHLRIRHWEY6IMNZ54SIHKD}

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	2026-05-18T00:24:25.889090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1bb949d71444f6263c86373de490750df35df465bc9ac1fb5b5a8c76d9f4d3f

Aliases

arxiv: 1802.01440 · arxiv_version: 1802.01440v1 · doi: 10.48550/arxiv.1802.01440 · pith_short_12: UG5ZJHLRIRHW · pith_short_16: UG5ZJHLRIRHWEY6I · pith_short_8: UG5ZJHLR

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/UG5ZJHLRIRHWEY6IMNZ54SIHKD \
  | 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: a1bb949d71444f6263c86373de490750df35df465bc9ac1fb5b5a8c76d9f4d3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08cfae395e3e725bcae21e88d5e056bb6605eafebbf760040a9e4aada870caf5",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-02-01T17:14:16Z",
    "title_canon_sha256": "fcbb4689bee3a998094642c2206cf4f206babda712837964b3f796ab2a69126d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01440",
    "kind": "arxiv",
    "version": 1
  }
}