Pith Number

pith:SPKXMFFT

pith:2017:SPKXMFFTX7WVH6LHLN752EIXFZ

not attested not anchored not stored refs pending

On lamps, walls, and eyes: the spectral radiance field and the evaluation of light pollution indoors

Jaume Escofet, Salvador Bar\'a

arxiv:1703.01843 v3 · 2017-03-06 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPKXMFFTX7WVH6LHLN752EIXFZ}

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	2026-05-18T00:01:15.455265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93d57614b3bfed53f9675b7fdd11172e6fa0b582d7b0fd3fde2e955e9a207057

Aliases

arxiv: 1703.01843 · arxiv_version: 1703.01843v3 · doi: 10.48550/arxiv.1703.01843 · pith_short_12: SPKXMFFTX7WV · pith_short_16: SPKXMFFTX7WVH6LH · pith_short_8: SPKXMFFT

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/SPKXMFFTX7WVH6LHLN752EIXFZ \
  | 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: 93d57614b3bfed53f9675b7fdd11172e6fa0b582d7b0fd3fde2e955e9a207057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b5e252bfca074d7f1b34e908dca57a780b89bfe588e64c96e017412eabbfebb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-03-06T12:46:48Z",
    "title_canon_sha256": "488f61017344ab1b817c08fcad203e2ee2908dcdd3a871da76aa9fbf1876936b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.01843",
    "kind": "arxiv",
    "version": 3
  }
}