Pith Number

pith:WYUJOUXL

pith:2015:WYUJOUXLFMDR3R7RXOB3GICWUQ

not attested not anchored not stored refs pending

The SKA and the Unknown Unknowns

Peter Wilkinson

arxiv:1506.08540 v1 · 2015-06-29 · 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{WYUJOUXLFMDR3R7RXOB3GICWUQ}

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	2026-05-18T01:37:43.983188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6289752eb2b071dc7f1bb83b32056a434e787f58994f68dc0ed6eece47f2153

Aliases

arxiv: 1506.08540 · arxiv_version: 1506.08540v1 · doi: 10.48550/arxiv.1506.08540 · pith_short_12: WYUJOUXLFMDR · pith_short_16: WYUJOUXLFMDR3R7R · pith_short_8: WYUJOUXL

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/WYUJOUXLFMDR3R7RXOB3GICWUQ \
  | 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: b6289752eb2b071dc7f1bb83b32056a434e787f58994f68dc0ed6eece47f2153

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a1c371c28a7f4f29e945fde9ebb543645a907b89ea5adde6c76f598e20db327",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-06-29T08:30:19Z",
    "title_canon_sha256": "4e105369ed24b34923af8f94c569ae0b6dd472cf41682c19795b6a73f10522b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08540",
    "kind": "arxiv",
    "version": 1
  }
}