Pith Number

pith:F2ECMUOJ

pith:2012:F2ECMUOJEG672F3PRO2BGNUTZV

not attested not anchored not stored refs pending

Synchronous phase-demodulation of high spatial frequency, concentric-rings, Placido fringe patterns

Manuel Servin

arxiv:1203.1886 v2 · 2012-03-08 · physics.optics · physics.ins-det · physics.med-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{F2ECMUOJEG672F3PRO2BGNUTZV}

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	2026-05-18T03:57:40.184967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e882651c921bdfd176f8bb4133693cd5fec4af26ecaea049ca864604415ad4e

Aliases

arxiv: 1203.1886 · arxiv_version: 1203.1886v2 · doi: 10.48550/arxiv.1203.1886 · pith_short_12: F2ECMUOJEG67 · pith_short_16: F2ECMUOJEG672F3P · pith_short_8: F2ECMUOJ

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/F2ECMUOJEG672F3PRO2BGNUTZV \
  | 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: 2e882651c921bdfd176f8bb4133693cd5fec4af26ecaea049ca864604415ad4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb36cfd2661d08b6ed66f565f3e91f44da14104c3a277ae1342260811df1756d",
    "cross_cats_sorted": [
      "physics.ins-det",
      "physics.med-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-03-08T18:55:42Z",
    "title_canon_sha256": "c06ad42cbe7b22446afac7b49cee4dfe1dc4f2b928742b0fda1f28885c66a160"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1886",
    "kind": "arxiv",
    "version": 2
  }
}