Pith Number

pith:XWPYVWNZ

pith:2011:XWPYVWNZRESFIMBPC5RWWDIK72

not attested not anchored not stored refs pending

Why Do We See a Classical World?

Hartmann R\"omer

arxiv:1112.6271 v2 · 2011-12-29 · quant-ph · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XWPYVWNZRESFIMBPC5RWWDIK72}

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	2026-05-18T02:20:48.056656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd9f8ad9b9892454302f17636b0d0afe8225f0b65cccdf037e6be6e506baa9ba

Aliases

arxiv: 1112.6271 · arxiv_version: 1112.6271v2 · doi: 10.48550/arxiv.1112.6271 · pith_short_12: XWPYVWNZRESF · pith_short_16: XWPYVWNZRESFIMBP · pith_short_8: XWPYVWNZ

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/XWPYVWNZRESFIMBPC5RWWDIK72 \
  | 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: bd9f8ad9b9892454302f17636b0d0afe8225f0b65cccdf037e6be6e506baa9ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf796311a87cdf59b48b0ae8935d516ecf8d5e9ccaf5398207d05c399b5d2df3",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-12-29T10:47:02Z",
    "title_canon_sha256": "c690f1d400247e7fcd52120fae4c35b767e8bdfafc6cef96ffec562e5d9968cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.6271",
    "kind": "arxiv",
    "version": 2
  }
}