Pith Number

pith:RRHPU4Y4

pith:2015:RRHPU4Y4T4VHV2XOOV5F2PIALK

not attested not anchored not stored refs pending

Extended Chameleons

Nicola Tamanini, Philippe Brax

arxiv:1512.07399 v2 · 2015-12-23 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RRHPU4Y4T4VHV2XOOV5F2PIALK}

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	2026-05-18T00:49:06.925906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c4efa731c9f2a7aeaee757a5d3d005ab2adeb153e4942b1dedcad47e1145530

Aliases

arxiv: 1512.07399 · arxiv_version: 1512.07399v2 · doi: 10.48550/arxiv.1512.07399 · pith_short_12: RRHPU4Y4T4VH · pith_short_16: RRHPU4Y4T4VHV2XO · pith_short_8: RRHPU4Y4

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/RRHPU4Y4T4VHV2XOOV5F2PIALK \
  | 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: 8c4efa731c9f2a7aeaee757a5d3d005ab2adeb153e4942b1dedcad47e1145530

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39c711731457c9e76c3a457b188df3263c76ab7a47d8cab0d9a352e02ca9107c",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-12-23T09:20:19Z",
    "title_canon_sha256": "a14a6223360abfd747c4c211356620d67410f37a748330d00b610dcc32c34558"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.07399",
    "kind": "arxiv",
    "version": 2
  }
}