Pith Number

pith:YWPL2FVZ

pith:2010:YWPL2FVZPYT3A4VJKZDD67GWHB

not attested not anchored not stored refs pending

An effective approach to the problem of time

Artur Tsobanjan, Martin Bojowald, Philipp A Hoehn

arxiv:1009.5953 v2 · 2010-09-29 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YWPL2FVZPYT3A4VJKZDD67GWHB}

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	2026-05-18T04:17:25.026847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c59ebd16b97e27b072a956463f7cd638559bcfcbdb8265fc589a7f21e2ab2fd7

Aliases

arxiv: 1009.5953 · arxiv_version: 1009.5953v2 · doi: 10.48550/arxiv.1009.5953 · pith_short_12: YWPL2FVZPYT3 · pith_short_16: YWPL2FVZPYT3A4VJ · pith_short_8: YWPL2FVZ

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/YWPL2FVZPYT3A4VJKZDD67GWHB \
  | 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: c59ebd16b97e27b072a956463f7cd638559bcfcbdb8265fc589a7f21e2ab2fd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d98c85d7ef5e74815b66bacee9fa094635d8196e94b7c725ff772f605a569a71",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-09-29T17:34:43Z",
    "title_canon_sha256": "24f58043c130385c6c5f1a7ec620711637b7b8da45b1406cd97b317602def2ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5953",
    "kind": "arxiv",
    "version": 2
  }
}