Pith Number

pith:QJ2GPNIY

pith:2009:QJ2GPNIYNFKXBQ2GQT7JM7QLXK

not attested not anchored not stored refs pending

High-resolution modal analysis

Bertrand David (LTCI), Kerem Ege (LMS), Xavier Boutillon (LMS)

arxiv:0909.0885 v1 · 2009-09-04 · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJ2GPNIYNFKXBQ2GQT7JM7QLXK}

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	2026-05-18T03:08:16.123167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

827467b518695570c34684fe967e0bba987b82ad1c52743ba95510281b058b24

Aliases

arxiv: 0909.0885 · arxiv_version: 0909.0885v1 · doi: 10.48550/arxiv.0909.0885 · pith_short_12: QJ2GPNIYNFKX · pith_short_16: QJ2GPNIYNFKXBQ2G · pith_short_8: QJ2GPNIY

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/QJ2GPNIYNFKXBQ2GQT7JM7QLXK \
  | 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: 827467b518695570c34684fe967e0bba987b82ad1c52743ba95510281b058b24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfd0aa3152ba97e49df6717ad4d49a6e9ee18dcce38a48b2f8cfb724ea0b0202",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2009-09-04T14:25:29Z",
    "title_canon_sha256": "9fd227581b7fc31011ee0009f9f12a9c79da6622a45a9eb89610c7bc8bf67d25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0885",
    "kind": "arxiv",
    "version": 1
  }
}