Pith Number

pith:7DLWPYRO

pith:2009:7DLWPYROUZD5MJXKGZPC2V7FH5

not attested not anchored not stored refs pending

Condensed matter lessons about the origin of time

Gil Jannes

arxiv:0904.3627 v2 · 2009-04-23 · 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{7DLWPYROUZD5MJXKGZPC2V7FH5}

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	2026-05-18T02:12:25.120930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8d767e22ea647d626ea365e2d57e53f68d17d399c8cbd2571956b30ff5b0930

Aliases

arxiv: 0904.3627 · arxiv_version: 0904.3627v2 · doi: 10.48550/arxiv.0904.3627 · pith_short_12: 7DLWPYROUZD5 · pith_short_16: 7DLWPYROUZD5MJXK · pith_short_8: 7DLWPYRO

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/7DLWPYROUZD5MJXKGZPC2V7FH5 \
  | 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: f8d767e22ea647d626ea365e2d57e53f68d17d399c8cbd2571956b30ff5b0930

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b67d85ca91f81639fb96edf27ee4679c614d62aa866502c5e206375930f0716d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-04-23T08:41:09Z",
    "title_canon_sha256": "b591408499c066fd08a18c93dba29086a8860f2de0415559462c93ccf03d8bb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3627",
    "kind": "arxiv",
    "version": 2
  }
}