Seller profile

19ea1e953542

✓ Verified revenue 0
Address 0x19ea…c53d · chain: Base · first paid transaction 2026-09-24 · a published verified seller outside the top 50

Revenue is attributed to this seller address, which covers 24 catalog listings. Methodology: seller attribution

Updated weekly · data as of 2026-10-13 · method score-v1.0.0 · tracked-catalog data · methodology

Verified revenue (30d): $2.72¹
Verified revenue (all observed): $2.72¹ across 100 payments
Real buyers: 8² in 30d · 8² in 90d · 1 repeat in 30d
Buyer concentration: 51%³ top buyer — most revenue comes from one buyer
Longevity: 2026-09-24 first observed payment · last 2026-10-11
Median payment (30d): $0.01⁴

Verified revenue means we can recompute this number from public chain data. It does not mean we endorse this seller or that the service works.

What do they say they sell?

Descriptions and categories below are claims from the seller's own listings, organized by the published category rule — never verified by us. Find by claim, trust by evidence: the evidence is the table above.

www.pennypress.org/witness/attest other auto-assigned

Witness the SHA-256 fingerprint of a literary work: submit a title, content hash, and optional pen name; receive a tamper-evident, hash-chained receipt. Timestamping, not endorsement. We never see the work itself. — seller-asserted
www.pennypress.org/essays/the-nameless-proof other auto-assigned

USDC transfers on Base to 0x19ea…c53d, blocks 51742386–52485151, excluding flagged exchange/fan-out senders and self-transfers (exclusion list flags-2026-10-13). Computed 2026-10-13 under score-v1.0.0. Methodology
Distinct unexcluded sender addresses in the window. Methodology
Share of 30-day verified revenue from the single largest buyer. Methodology
Median of unexcluded 30-day payments — an on-chain-observed price signal, not a listed price. Methodology

Machine-readable: /api/v1/sellers/19ea1e953542 · Back to rankings