Pith Number

pith:NT4VZHSL

pith:2009:NT4VZHSLRNUMTC2HZGOK2TWI4G

not attested not anchored not stored refs pending

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Rafael F. Lang, Wolfgang Seidel

arxiv:0906.3290 v1 · 2009-06-17 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NT4VZHSLRNUMTC2HZGOK2TWI4G}

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	2026-07-04T15:54:37.829707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cf95c9e4b8b68c98b47c99cad4ec8e1a808fc58f8b6f66c9bc8e54f7498e1db

Aliases

arxiv: 0906.3290 · arxiv_version: 0906.3290v1 · doi: 10.48550/arxiv.0906.3290 · pith_short_12: NT4VZHSLRNUM · pith_short_16: NT4VZHSLRNUMTC2H · pith_short_8: NT4VZHSL

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/NT4VZHSLRNUMTC2HZGOK2TWI4G \
  | 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: 6cf95c9e4b8b68c98b47c99cad4ec8e1a808fc58f8b6f66c9bc8e54f7498e1db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72ff1a0cd22ea7b4bb8adddab30b058a6f5edf959bee3a7f7c5aee2175030d03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-06-17T20:00:07Z",
    "title_canon_sha256": "0f875f7229da111620cc5699745ed97606cfd91e8da312e7f5bcff648b7c8de5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3290",
    "kind": "arxiv",
    "version": 1
  }
}