Pith Number

pith:7H75NVBA

pith:2016:7H75NVBAVRNRJFHNIWGLA5VR6R

not attested not anchored not stored refs pending

Optical frequency combs generated mechanically

M. Sumetsky

arxiv:1608.06496 v1 · 2016-08-23 · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7H75NVBAVRNRJFHNIWGLA5VR6R}

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	2026-05-18T00:33:23.174981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9ffd6d420ac5b1494ed458cb076b1f463306b4299660aa96d10caae17460948

Aliases

arxiv: 1608.06496 · arxiv_version: 1608.06496v1 · doi: 10.48550/arxiv.1608.06496 · pith_short_12: 7H75NVBAVRNR · pith_short_16: 7H75NVBAVRNRJFHN · pith_short_8: 7H75NVBA

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/7H75NVBAVRNRJFHNIWGLA5VR6R \
  | 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: f9ffd6d420ac5b1494ed458cb076b1f463306b4299660aa96d10caae17460948

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04e674814bcc6449456cd45fd7c45b422b234e35c96b8b0866958c76bd78cfd0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2016-08-23T13:10:43Z",
    "title_canon_sha256": "8d44462b9a3dc56bd99f850ed94d3004638a63cd29febdb9f507e2cde5e476d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.06496",
    "kind": "arxiv",
    "version": 1
  }
}