Pith Number

pith:WCVBTQGI

pith:2019:WCVBTQGIKBV6KSPZ3CXMBZ4QXA

not attested not anchored not stored refs pending

Three ways to select from two attosecond pulses

Katalin Kovacs, Valer Tosa

arxiv:1907.08833 v1 · 2019-07-20 · 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{WCVBTQGIKBV6KSPZ3CXMBZ4QXA}

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	2026-05-17T23:40:05.208474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0aa19c0c8506be549f9d8aec0e790b808e86e6d4a1a0d9357b8d7b61e3878e1

Aliases

arxiv: 1907.08833 · arxiv_version: 1907.08833v1 · doi: 10.48550/arxiv.1907.08833 · pith_short_12: WCVBTQGIKBV6 · pith_short_16: WCVBTQGIKBV6KSPZ · pith_short_8: WCVBTQGI

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/WCVBTQGIKBV6KSPZ3CXMBZ4QXA \
  | 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: b0aa19c0c8506be549f9d8aec0e790b808e86e6d4a1a0d9357b8d7b61e3878e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa1a9483c267bdf0d6a7958b8ed094897ede1991257636a64c26296791958bc7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-07-20T16:37:36Z",
    "title_canon_sha256": "04c4afcf4e614d44cb086526c9e3f97e4f2786da30d89c4772d226b65e7fca73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08833",
    "kind": "arxiv",
    "version": 1
  }
}