Pith Number

pith:TNVPKDD3

pith:2017:TNVPKDD3IJK4OYO54H2HSKPGXJ

not attested not anchored not stored refs pending

The Angular Momentum of Topologically Structured Darkness

Mark E. Siemens, Samuel N. Alperin

arxiv:1709.09299 v1 · 2017-09-27 · 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{TNVPKDD3IJK4OYO54H2HSKPGXJ}

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	2026-05-18T00:29:54.382267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b6af50c7b4255c761dde1f47929e6ba57bce2acd164bc98c4ebc60acb8300c3

Aliases

arxiv: 1709.09299 · arxiv_version: 1709.09299v1 · doi: 10.48550/arxiv.1709.09299 · pith_short_12: TNVPKDD3IJK4 · pith_short_16: TNVPKDD3IJK4OYO5 · pith_short_8: TNVPKDD3

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/TNVPKDD3IJK4OYO54H2HSKPGXJ \
  | 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: 9b6af50c7b4255c761dde1f47929e6ba57bce2acd164bc98c4ebc60acb8300c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7df2b7455ca665ccb48a1edc541b9db5048287185006295d3a7f6c8d3fc7e66e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-09-27T01:21:35Z",
    "title_canon_sha256": "05b20566cc0d3533353875a1c17ccbfae8250b5529bea2f4f69d9385c20569f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09299",
    "kind": "arxiv",
    "version": 1
  }
}