Pith Number

pith:ECYA237I

pith:2012:ECYA237IDBYWK7KYTMWVHY55EP

not attested not anchored not stored refs pending

A river model of space

O. Gron, S. Braeck

arxiv:1204.0419 v1 · 2012-04-02 · gr-qc · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECYA237IDBYWK7KYTMWVHY55EP}

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	2026-05-18T00:44:39.219251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20b00d6fe81871657d589b2d53e3bd23d912fd5b741a5a73a222ed4718e9e4e8

Aliases

arxiv: 1204.0419 · arxiv_version: 1204.0419v1 · doi: 10.48550/arxiv.1204.0419 · pith_short_12: ECYA237IDBYW · pith_short_16: ECYA237IDBYWK7KY · pith_short_8: ECYA237I

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/ECYA237IDBYWK7KYTMWVHY55EP \
  | 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: 20b00d6fe81871657d589b2d53e3bd23d912fd5b741a5a73a222ed4718e9e4e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "756805c78a9a661919615661237980afddc6d15d1876e0365425304af0d7c674",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-04-02T14:31:03Z",
    "title_canon_sha256": "17f8e917ea7c0056016e6537daa3c34727daa77743b1360913e32af7ab72fc73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0419",
    "kind": "arxiv",
    "version": 1
  }
}