Pith Number

pith:ECYHFTW5

pith:2011:ECYHFTW5UMQVWHLANMNRDQURP3

not attested not anchored not stored refs pending

On the Ollivier-Poulin-Zurek definition of objectivity

Chris Fields

arxiv:1102.2826 v5 · 2011-02-14 · quant-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{ECYHFTW5UMQVWHLANMNRDQURP3}

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	2026-05-18T02:59:48.716135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20b072cedda3215b1d606b1b11c2917eef3d2bb1ddcb0e0551ffa75feeb9b10d

Aliases

arxiv: 1102.2826 · arxiv_version: 1102.2826v5 · doi: 10.48550/arxiv.1102.2826 · pith_short_12: ECYHFTW5UMQV · pith_short_16: ECYHFTW5UMQVWHLA · pith_short_8: ECYHFTW5

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/ECYHFTW5UMQVWHLANMNRDQURP3 \
  | 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: 20b072cedda3215b1d606b1b11c2917eef3d2bb1ddcb0e0551ffa75feeb9b10d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07a0748ded2de347c58a7943c7b2250d0f5ab6c5a4502762fcd92f84b15c06b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-02-14T16:44:18Z",
    "title_canon_sha256": "f682b75fd5e900e57030f1cc1ff1821a27d052f528c0b6b001a511016cd9a40b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2826",
    "kind": "arxiv",
    "version": 5
  }
}