Pith Number

pith:YC7IFPO6

pith:2010:YC7IFPO6XOUXAWC7GRP7XZ27MG

not attested not anchored not stored refs pending

Why Physics Needs Quantum Foundations

Lucien Hardy, Robert Spekkens

arxiv:1003.5008 v1 · 2010-03-25 · quant-ph · physics.pop-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{YC7IFPO6XOUXAWC7GRP7XZ27MG}

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	2026-05-18T04:20:59.253887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0be82bddebba970585f345ffbe75f61a4d2883c1b2a831d26d5197c9a743b81

Aliases

arxiv: 1003.5008 · arxiv_version: 1003.5008v1 · doi: 10.48550/arxiv.1003.5008 · pith_short_12: YC7IFPO6XOUX · pith_short_16: YC7IFPO6XOUXAWC7 · pith_short_8: YC7IFPO6

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/YC7IFPO6XOUXAWC7GRP7XZ27MG \
  | 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: c0be82bddebba970585f345ffbe75f61a4d2883c1b2a831d26d5197c9a743b81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "222a51b5f44316a9bf91b4778de1e0ceea0b3de36dfe49f020705479c78de701",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-03-25T21:41:01Z",
    "title_canon_sha256": "b3a9e7f0489fb745ead7c00ff055e4aabced062338b05f8f7de8d38811d7ca7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.5008",
    "kind": "arxiv",
    "version": 1
  }
}