Pith Number

pith:7EP5VO57

pith:2006:7EP5VO57QFEUCKKRBAHOCFJGWE

not attested not anchored not stored refs pending

Physics in the Real Universe: Time and Spacetime

George F. R. Ellis

arxiv:gr-qc/0605049 v5 · 2006-05-09 · 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{7EP5VO57QFEUCKKRBAHOCFJGWE}

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	2026-07-04T17:01:27.836765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f91fdabbbf8149412951080ee11526b100bcf73870484a706bbdcc7cbd7f36ea

Aliases

arxiv: gr-qc/0605049 · arxiv_version: gr-qc/0605049v5 · doi: 10.48550/arxiv.gr-qc/0605049 · pith_short_12: 7EP5VO57QFEU · pith_short_16: 7EP5VO57QFEUCKKR · pith_short_8: 7EP5VO57

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/7EP5VO57QFEUCKKRBAHOCFJGWE \
  | 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: f91fdabbbf8149412951080ee11526b100bcf73870484a706bbdcc7cbd7f36ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3a87e318bf49140c9a5c499ed2b6d4a2197f67958b76c55b571591edb410da8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2006-05-09T12:46:25Z",
    "title_canon_sha256": "7d27405de3f754272c0dccab86d03e09440450c02158ded0a46dddbb1bbde5df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0605049",
    "kind": "arxiv",
    "version": 5
  }
}