Pith Number

pith:7BQH4LJZ

pith:2026:7BQH4LJZV6L2ZGXWBJ2YFY2QF3

not attested not anchored not stored refs pending

The origin of carotenoid triplets in purple photosynthetic bacteria

Andrew A. Pascal, Andrew Gall, Bruno Robert, Cristian Ilioaia, Juan J. Romero, Manuel J. Llansola-Portoles, Viola D'mello

arxiv:2608.07390 v1 · 2026-08-07 · physics.chem-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BQH4LJZV6L2ZGXWBJ2YFY2QF3}

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	2026-08-10T01:15:14.045893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8607e2d39af97ac9af60a7582e3502ef7d1c14cb15d688e0593292b7ccaf02e

Aliases

arxiv: 2608.07390 · arxiv_version: 2608.07390v1 · doi: 10.48550/arxiv.2608.07390 · pith_short_12: 7BQH4LJZV6L2 · pith_short_16: 7BQH4LJZV6L2ZGXW · pith_short_8: 7BQH4LJZ

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/7BQH4LJZV6L2ZGXWBJ2YFY2QF3 \
  | 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: f8607e2d39af97ac9af60a7582e3502ef7d1c14cb15d688e0593292b7ccaf02e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a908fd7ca6bd3459fea9b05ffe871a567f9749c14c5b4dcb56c1baee4baac996",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2026-08-07T16:36:41Z",
    "title_canon_sha256": "bada1993aaa0e664787b9a0cfcc689e0af2d5f9d86bffe087a49b109bf570883"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.07390",
    "kind": "arxiv",
    "version": 1
  }
}