Pith Number

pith:VFU6TRR5

pith:2012:VFU6TRR57Z2JRCRUVGKPPAECT6

not attested not anchored not stored refs pending

Direct observation of temporal coherence by weak projective measurements of photon arrival time

Changliang Ren, Holger F. Hofmann

arxiv:1210.4212 v3 · 2012-10-15 · 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{VFU6TRR57Z2JRCRUVGKPPAECT6}

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	2026-05-18T03:20:09.558873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a969e9c63dfe74988a34a994f780829fb37fc70a9a4e74168543d85bab3ab09e

Aliases

arxiv: 1210.4212 · arxiv_version: 1210.4212v3 · doi: 10.48550/arxiv.1210.4212 · pith_short_12: VFU6TRR57Z2J · pith_short_16: VFU6TRR57Z2JRCRU · pith_short_8: VFU6TRR5

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/VFU6TRR57Z2JRCRUVGKPPAECT6 \
  | 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: a969e9c63dfe74988a34a994f780829fb37fc70a9a4e74168543d85bab3ab09e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bea9bb4ba91eec8e8da39351ab03804499042b17a6b719fe3038436677f1645",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-10-15T22:59:23Z",
    "title_canon_sha256": "aa0f2d41d039158b12047ab3e6d86f5001217ef7093e1749f8d677fc578f5fe8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4212",
    "kind": "arxiv",
    "version": 3
  }
}