Pith Number

pith:CUMFKBTO

pith:2012:CUMFKBTO2E2QDEFCQTHUKZVV25

not attested not anchored not stored refs pending

Long-term stability of fibre-optic transmission for multi-object spectroscopy

R. D. Cannon, R. Sharp, S. Brough

arxiv:1209.5131 v1 · 2012-09-24 · astro-ph.IM · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CUMFKBTO2E2QDEFCQTHUKZVV25}

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	2026-05-18T01:54:19.719990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

151855066ed1350190a284cf4566b5d7735a1e0aab83c0005840d3084ab6dd19

Aliases

arxiv: 1209.5131 · arxiv_version: 1209.5131v1 · doi: 10.48550/arxiv.1209.5131 · pith_short_12: CUMFKBTO2E2Q · pith_short_16: CUMFKBTO2E2QDEFC · pith_short_8: CUMFKBTO

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/CUMFKBTO2E2QDEFCQTHUKZVV25 \
  | 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: 151855066ed1350190a284cf4566b5d7735a1e0aab83c0005840d3084ab6dd19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc6960d6b1c8e8d4fc72d9e35ba3e62666a0a352e3913116228bbd3d44001d8e",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-09-24T00:29:16Z",
    "title_canon_sha256": "482158ce7c5bcee4094a616ab9b9c75c718651f91c1e257575ba1b909a265b5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5131",
    "kind": "arxiv",
    "version": 1
  }
}