Pith Number

pith:S4K2WSMN

pith:2012:S4K2WSMNBVVOL3GFZDYUPMVLDT

not attested not anchored not stored refs pending

Why Gravitational Wave Science Needs Pulsar Timing Arrays And Why Pulsar Timing Arrays Need Both Arecibo and the GBT: A Response to the NSF-AST Portfolio Review from the NANOGrav Collaboration

The NANOGrav Collaboration

arxiv:1210.5998 v1 · 2012-10-22 · astro-ph.IM · astro-ph.SR · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S4K2WSMNBVVOL3GFZDYUPMVLDT}

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	2026-05-18T03:42:34.526467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9715ab498d0d6ae5ecc5c8f147b2ab1cf5941c71f6b865a87f322f5be0a324a0

Aliases

arxiv: 1210.5998 · arxiv_version: 1210.5998v1 · doi: 10.48550/arxiv.1210.5998 · pith_short_12: S4K2WSMNBVVO · pith_short_16: S4K2WSMNBVVOL3GF · pith_short_8: S4K2WSMN

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/S4K2WSMNBVVOL3GFZDYUPMVLDT \
  | 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: 9715ab498d0d6ae5ecc5c8f147b2ab1cf5941c71f6b865a87f322f5be0a324a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "016613ef175cceedf5c0c216c2798346037ba80407d13039dede9ee4522a0ea2",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-10-22T18:51:32Z",
    "title_canon_sha256": "626271be2356e944c1dd06673bc0ac4e3ac07331c680656608f8e72f7616b1de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5998",
    "kind": "arxiv",
    "version": 1
  }
}