Pith Number

pith:QSEAYHEM

pith:2018:QSEAYHEMDSU7GCMEYXGKK46Q4W

not attested not anchored not stored refs pending

Foveated Time Stretch

Bahram Jalali, Jacky C.K. Chan

arxiv:1805.00143 v1 · 2018-05-01 · 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{QSEAYHEMDSU7GCMEYXGKK46Q4W}

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	2026-05-18T00:17:10.475991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84880c1c8c1ca9f30984c5cca573d0e5acf8db120c0a767c292958c3949015c1

Aliases

arxiv: 1805.00143 · arxiv_version: 1805.00143v1 · doi: 10.48550/arxiv.1805.00143 · pith_short_12: QSEAYHEMDSU7 · pith_short_16: QSEAYHEMDSU7GCME · pith_short_8: QSEAYHEM

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/QSEAYHEMDSU7GCMEYXGKK46Q4W \
  | 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: 84880c1c8c1ca9f30984c5cca573d0e5acf8db120c0a767c292958c3949015c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59a8d0780ed7ec8a4e22319546641bad62a01ae1c3bc2ed97027ffc4af7e24ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-05-01T00:50:24Z",
    "title_canon_sha256": "9e97c72151e3422ad015e793d0c8bc1565c9667edf8e5b4a6ec948c7f6e56b94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00143",
    "kind": "arxiv",
    "version": 1
  }
}