Pith Number

pith:O4RJ4YVN

pith:2018:O4RJ4YVN5V7RWKXUJ6TQNP6KRM

not attested not anchored not stored refs pending

The SPIRIT Telescope Initiative: six years on

Paul Luckas

arxiv:1807.06188 v1 · 2018-07-17 · 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{O4RJ4YVN5V7RWKXUJ6TQNP6KRM}

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	2026-05-18T00:10:33.751650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77229e62aded7f1b2af44fa706bfca8b3a0cc14f88d0921165d66cd4751bda36

Aliases

arxiv: 1807.06188 · arxiv_version: 1807.06188v1 · doi: 10.48550/arxiv.1807.06188 · pith_short_12: O4RJ4YVN5V7R · pith_short_16: O4RJ4YVN5V7RWKXU · pith_short_8: O4RJ4YVN

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/O4RJ4YVN5V7RWKXUJ6TQNP6KRM \
  | 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: 77229e62aded7f1b2af44fa706bfca8b3a0cc14f88d0921165d66cd4751bda36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7dde186175f2098890210eadbfee1a9c3afab326ee9320f24d5c20884ffbfa2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-07-17T02:49:54Z",
    "title_canon_sha256": "46203ab70263d98db536a31e5dc76dfe7cd37d7173d245e02963ca66cf35815d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06188",
    "kind": "arxiv",
    "version": 1
  }
}