Pith Number

pith:BP2IBF5D

pith:2015:BP2IBF5DNCDHPFR7YZBR4VLDNB

not attested not anchored not stored refs pending

Some not-so-common ideas about gravity

Carlos Barcel\'o, Luis J. Garay, Ra\'ul Carballo-Rubio

arxiv:1502.04992 v1 · 2015-02-17 · 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{BP2IBF5DNCDHPFR7YZBR4VLDNB}

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	2026-05-18T02:26:53.336686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bf48097a3688677963fc6431e5563684c3c43aa850bd85ed300fae1c4fa7021

Aliases

arxiv: 1502.04992 · arxiv_version: 1502.04992v1 · doi: 10.48550/arxiv.1502.04992 · pith_short_12: BP2IBF5DNCDH · pith_short_16: BP2IBF5DNCDHPFR7 · pith_short_8: BP2IBF5D

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/BP2IBF5DNCDHPFR7YZBR4VLDNB \
  | 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: 0bf48097a3688677963fc6431e5563684c3c43aa850bd85ed300fae1c4fa7021

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09478459e89eb405b4b0a0b739964bff54772b9f82f8073321fe4a3bce38d3fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-02-17T18:43:00Z",
    "title_canon_sha256": "72742dfe06d9c40712c5c9ee40457acd96fd411bf9d9e7af95db687ec60a6db3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04992",
    "kind": "arxiv",
    "version": 1
  }
}