Pith Number

pith:WL4OOOPP

pith:2015:WL4OOOPPLI6FX2LORV7K4P3DZT

not attested not anchored not stored refs pending

Is Time's Arrow Perspectival?

Carlo Rovelli

arxiv:1505.01125 v2 · 2015-05-04 · physics.hist-ph · 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{WL4OOOPPLI6FX2LORV7K4P3DZT}

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.

Cited by

1 paper in Pith

Elementary considerations on possible entropy-driven cosmological evolutions

Receipt and verification

First computed	2026-05-18T01:22:18.720893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2f8e739ef5a3c5be96e8d7eae3f63ccce43102c9b83371eb4174f8c20321af5

Aliases

arxiv: 1505.01125 · arxiv_version: 1505.01125v2 · doi: 10.48550/arxiv.1505.01125 · pith_short_12: WL4OOOPPLI6F · pith_short_16: WL4OOOPPLI6FX2LO · pith_short_8: WL4OOOPP

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/WL4OOOPPLI6FX2LORV7K4P3DZT \
  | 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: b2f8e739ef5a3c5be96e8d7eae3f63ccce43102c9b83371eb4174f8c20321af5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3aa5db6c79d7c6bce40f5a06b10a19b9c8d6ab2a8e404c0d7cff8f16dafe3471",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2015-05-04T05:55:13Z",
    "title_canon_sha256": "754e4ca4c756312a4076a7d04c5f5feb99ece7d0449c794fae97192e745bf292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01125",
    "kind": "arxiv",
    "version": 2
  }
}