Pith Number

pith:6W2GHQOS

pith:2016:6W2GHQOSMRBFRVQBIPB5A34F47

not attested not anchored not stored refs pending

Which tone-mapping operator is the best? A comparative study of perceptual quality

C. Alejandro P\'arraga, Xavier Otazu, Xim Cerd\'a-Company

arxiv:1601.04450 v1 · 2016-01-18 · cs.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6W2GHQOSMRBFRVQBIPB5A34F47}

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	2026-05-18T00:20:22.560950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5b463c1d2644258d60143c3d06f85e7c33f9c76f7603fc7053dabf1a91a6f46

Aliases

arxiv: 1601.04450 · arxiv_version: 1601.04450v1 · doi: 10.48550/arxiv.1601.04450 · pith_short_12: 6W2GHQOSMRBF · pith_short_16: 6W2GHQOSMRBFRVQB · pith_short_8: 6W2GHQOS

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/6W2GHQOSMRBFRVQBIPB5A34F47 \
  | 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: f5b463c1d2644258d60143c3d06f85e7c33f9c76f7603fc7053dabf1a91a6f46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7755d8319ed3d97f6943815f5a9b4f2ee81bbbadac9eb003fea1bb0da9171707",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2016-01-18T10:11:26Z",
    "title_canon_sha256": "f13b983a64fe2626c30452b09e2b42d023032840b0dcac68fd4841a3f284f443"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04450",
    "kind": "arxiv",
    "version": 1
  }
}