Pith Number

pith:EGZJR2WI

pith:2015:EGZJR2WIP6POWB4QXHNTW3OKLW

not attested not anchored not stored refs pending

What becomes of a causal set

Christian Wuthrich, Craig Callender

arxiv:1502.00018 v1 · 2015-01-30 · physics.hist-ph · 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{EGZJR2WIP6POWB4QXHNTW3OKLW}

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	2026-05-18T02:28:13.013923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21b298eac87f9eeb0790b9db3b6dca5daf5dbd16811b1d07487a2e831902278f

Aliases

arxiv: 1502.00018 · arxiv_version: 1502.00018v1 · doi: 10.48550/arxiv.1502.00018 · pith_short_12: EGZJR2WIP6PO · pith_short_16: EGZJR2WIP6POWB4Q · pith_short_8: EGZJR2WI

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/EGZJR2WIP6POWB4QXHNTW3OKLW \
  | 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: 21b298eac87f9eeb0790b9db3b6dca5daf5dbd16811b1d07487a2e831902278f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2f3f2860c96b49186cb063f3e633633d5c367e6eeef8c5d4e38397e75d57568",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2015-01-30T21:21:43Z",
    "title_canon_sha256": "2b6590ba1295535ac54e3c1da3572c64b9b5987862364a9cda2d3351074c9af7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00018",
    "kind": "arxiv",
    "version": 1
  }
}