Pith Number

pith:SG5UJYC2

pith:2012:SG5UJYC2AFW2WNLDZBJG5N47LS

not attested not anchored not stored refs pending

Positioning systems in Minkowski space-time: Bifurcation problem and observational data

Bartolom\'e Coll, Joan Josep Ferrando, Juan Antonio Morales-Lladosa

arxiv:1204.2241 v2 · 2012-04-10 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SG5UJYC2AFW2WNLDZBJG5N47LS}

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	2026-05-18T02:21:16.403687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91bb44e05a016dab3563c8526eb79f5caa1864c2d56237f581ee8875fc0a21ae

Aliases

arxiv: 1204.2241 · arxiv_version: 1204.2241v2 · doi: 10.48550/arxiv.1204.2241 · pith_short_12: SG5UJYC2AFW2 · pith_short_16: SG5UJYC2AFW2WNLD · pith_short_8: SG5UJYC2

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/SG5UJYC2AFW2WNLDZBJG5N47LS \
  | 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: 91bb44e05a016dab3563c8526eb79f5caa1864c2d56237f581ee8875fc0a21ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9d043701731b0a893fc1522829c2daedcbbec5f2119da6b6a60c093883df8eb",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-04-10T18:41:25Z",
    "title_canon_sha256": "4793ff0c5746a69876d367540bdb745cd014788c416665904129ce502ffbd10e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2241",
    "kind": "arxiv",
    "version": 2
  }
}