Pith Number

pith:44JUW3CJ

pith:2012:44JUW3CJL7ZVUWAY7COI5LJSNX

not attested not anchored not stored refs pending

First starlight spectrum captured using an integrated photonic micro-spectrograph

C. Betters, G. Robertson, J. Bland-Hawthorn, J. S. Lawrence, N. Cvetojevic, N. Jovanovic, S. C. Ellis

arxiv:1208.4418 v1 · 2012-08-22 · astro-ph.IM · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{44JUW3CJL7ZVUWAY7COI5LJSNX}

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	2026-05-18T03:48:14.279536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7134b6c495ff35a5818f89c8ead326dcafac6786da951183a87d8c2041cb2d6

Aliases

arxiv: 1208.4418 · arxiv_version: 1208.4418v1 · doi: 10.48550/arxiv.1208.4418 · pith_short_12: 44JUW3CJL7ZV · pith_short_16: 44JUW3CJL7ZVUWAY · pith_short_8: 44JUW3CJ

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/44JUW3CJL7ZVUWAY7COI5LJSNX \
  | 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: e7134b6c495ff35a5818f89c8ead326dcafac6786da951183a87d8c2041cb2d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a4219b68e2bb904963911be2d2cfe671b4bd2db5931ac2a452e100d9b085b18",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-08-22T02:57:29Z",
    "title_canon_sha256": "674900079731413bff83166e015a57774eaa3405b3431ba6030a5b13bb575b6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4418",
    "kind": "arxiv",
    "version": 1
  }
}