Pith Number

pith:ZF4QVGDR

pith:2012:ZF4QVGDRXFSJ6RDPHHPIPBCR4L

not attested not anchored not stored refs pending

One lump or two?

Kieran Smallbone

arxiv:1210.3527 v1 · 2012-10-12 · q-bio.QM · q-bio.CB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZF4QVGDRXFSJ6RDPHHPIPBCR4L}

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	2026-05-18T03:43:19.501892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9790a9871b9649f446f39de878451e2c79314b49d134225f2d49dfc9a3bcd67

Aliases

arxiv: 1210.3527 · arxiv_version: 1210.3527v1 · doi: 10.48550/arxiv.1210.3527 · pith_short_12: ZF4QVGDRXFSJ · pith_short_16: ZF4QVGDRXFSJ6RDP · pith_short_8: ZF4QVGDR

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/ZF4QVGDRXFSJ6RDPHHPIPBCR4L \
  | 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: c9790a9871b9649f446f39de878451e2c79314b49d134225f2d49dfc9a3bcd67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fbe91bab9a044dbd15d78f240162254e26dc5a1028fdf56c80d33a7bc7a00a7",
    "cross_cats_sorted": [
      "q-bio.CB"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2012-10-12T14:23:06Z",
    "title_canon_sha256": "4a3be16c38c2c62c49390a68aa0c7adb12c0bee3956a085d5ba63a68d926c493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.3527",
    "kind": "arxiv",
    "version": 1
  }
}