Pith Number

pith:N7QKNMUA

pith:2000:N7QKNMUAG6BI4LCMSGDWQWI37M

not attested not anchored not stored refs pending

On Imprisoned Curves and b-length in General Relativity

Fredrik St{\aa}hl

arxiv:gr-qc/0006050 v1 · 2000-06-13 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7QKNMUAG6BI4LCMSGDWQWI37M}

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	2026-07-04T14:25:17.609036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fe0a6b28037828e2c4c918768591bfb066667e3d180872916e3d22e0cdbfbbe

Aliases

arxiv: gr-qc/0006050 · arxiv_version: gr-qc/0006050v1 · doi: 10.48550/arxiv.gr-qc/0006050 · pith_short_12: N7QKNMUAG6BI · pith_short_16: N7QKNMUAG6BI4LCM · pith_short_8: N7QKNMUA

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/N7QKNMUAG6BI4LCMSGDWQWI37M \
  | 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: 6fe0a6b28037828e2c4c918768591bfb066667e3d180872916e3d22e0cdbfbbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b869e8606da8ecbcd346406bdeb9090453ea9683c9787d43ec96594d8b7800b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2000-06-13T20:53:03Z",
    "title_canon_sha256": "42ad0b2f63af11dfc1bf87a88d504f7f17b6d9709e1ca809161f8cb294b80b7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0006050",
    "kind": "arxiv",
    "version": 1
  }
}