Pith Number

pith:DDGRFHXQ

pith:2017:DDGRFHXQL6L5MEVBZACTUO3UTY

not attested not anchored not stored refs pending

Angular Schmidt spectrum of entangled photons: derivation of an exact formula and experimental characterization for non-collinear phase matching

Anand K. Jha, Girish Kulkarni, Lavanya Taneja, Shaurya Aarav

arxiv:1712.03355 v2 · 2017-12-09 · physics.optics · 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{DDGRFHXQL6L5MEVBZACTUO3UTY}

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	2026-05-18T00:11:32.339658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18cd129ef05f97d612a1c8053a3b749e0b02b32df7fb37b974e17dbc7c81f768

Aliases

arxiv: 1712.03355 · arxiv_version: 1712.03355v2 · doi: 10.48550/arxiv.1712.03355 · pith_short_12: DDGRFHXQL6L5 · pith_short_16: DDGRFHXQL6L5MEVB · pith_short_8: DDGRFHXQ

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/DDGRFHXQL6L5MEVBZACTUO3UTY \
  | 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: 18cd129ef05f97d612a1c8053a3b749e0b02b32df7fb37b974e17dbc7c81f768

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ebdbf8d2ae0f1851e3e09343d3b0c102722d1b008455df46dae2f67724b3166",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-12-09T08:39:52Z",
    "title_canon_sha256": "ba2a6dbe003527ca22c6d95fd24469a0a39aac68c1a8314b59cc8ef98cfd8138"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03355",
    "kind": "arxiv",
    "version": 2
  }
}