Pith Number

pith:A4XO5AZ4

pith:2015:A4XO5AZ4FBDVP6FBSEQQ2ROVJA

not attested not anchored not stored refs pending

The relativity of Colour

Paul D Stack, Robert Delbourgo

arxiv:1511.02412 v2 · 2015-11-08 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4XO5AZ4FBDVP6FBSEQQ2ROVJA}

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	2026-05-18T01:23:07.923029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

072eee833c284757f8a191210d45d54804ffbc966f5fb99710ccbaebfa803552

Aliases

arxiv: 1511.02412 · arxiv_version: 1511.02412v2 · doi: 10.48550/arxiv.1511.02412 · pith_short_12: A4XO5AZ4FBDV · pith_short_16: A4XO5AZ4FBDVP6FB · pith_short_8: A4XO5AZ4

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/A4XO5AZ4FBDVP6FBSEQQ2ROVJA \
  | 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: 072eee833c284757f8a191210d45d54804ffbc966f5fb99710ccbaebfa803552

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3e903705d3e919e24b4eb816b6f50b0da667604e6ef7db3506d0238567daed0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2015-11-08T00:18:04Z",
    "title_canon_sha256": "4670aeb2188da7586046c3ea5f008a20fe5d9ed0f610a51b151adc90f47b0509"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.02412",
    "kind": "arxiv",
    "version": 2
  }
}