Pith Number

pith:TB2OQZQA

pith:2007:TB2OQZQABEDXVGGCKN5VFXCKCG

not attested not anchored not stored refs pending

Two Examples of Circular Motion for Introductory Courses in Relativity

Mark Semon, Shimon Malin, Stephanie Wortel

arxiv:gr-qc/0703090 v2 · 2007-03-17 · gr-qc · physics.class-ph · physics.ed-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{TB2OQZQABEDXVGGCKN5VFXCKCG}

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	2026-07-04T15:28:44.426992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9874e8660009077a98c2537b52dc4a11a38dfb22159e2d4d7d6941c299b7df6e

Aliases

arxiv: gr-qc/0703090 · arxiv_version: gr-qc/0703090v2 · doi: 10.48550/arxiv.gr-qc/0703090 · pith_short_12: TB2OQZQABEDX · pith_short_16: TB2OQZQABEDXVGGC · pith_short_8: TB2OQZQA

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/TB2OQZQABEDXVGGCKN5VFXCKCG \
  | 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: 9874e8660009077a98c2537b52dc4a11a38dfb22159e2d4d7d6941c299b7df6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fcebd9c3b40ad658ddba814d45eb6c5e75db1f64f84440e7714ed1204973e7f",
    "cross_cats_sorted": [
      "physics.class-ph",
      "physics.ed-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-03-17T11:45:58Z",
    "title_canon_sha256": "2a152df5d45c7db9ec4d44ef8899d5b0655b3508dcbc6832631ba59baa8b115e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0703090",
    "kind": "arxiv",
    "version": 2
  }
}