Pith Number

pith:OXDMFITZ

pith:2008:OXDMFITZNFI7UXQBFGA76IBNL4

not attested not anchored not stored refs pending

The Parallelometer: a mechanical device to study curvature

Alberto G. Rojo, David Garfinkle, Salvador Gil

arxiv:0809.2512 v2 · 2008-09-15 · gr-qc · physics.class-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{OXDMFITZNFI7UXQBFGA76IBNL4}

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	2026-05-18T02:15:34.603308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75c6c2a2796951fa5e012981ff202d5f39c01f40c5e7301eeb0c503c3d62ece4

Aliases

arxiv: 0809.2512 · arxiv_version: 0809.2512v2 · doi: 10.48550/arxiv.0809.2512 · pith_short_12: OXDMFITZNFI7 · pith_short_16: OXDMFITZNFI7UXQB · pith_short_8: OXDMFITZ

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/OXDMFITZNFI7UXQBFGA76IBNL4 \
  | 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: 75c6c2a2796951fa5e012981ff202d5f39c01f40c5e7301eeb0c503c3d62ece4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc53f408a6363423c6b7a98966ef2e57cb2f404711f9d304766c0168e939b9b5",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-09-15T13:04:17Z",
    "title_canon_sha256": "53b487475778337695daac73628469f9810f25e6e88fa5b59f0b271cd0be4be6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2512",
    "kind": "arxiv",
    "version": 2
  }
}