Evidence

Format Web Page

"ERC-2981 standardized a way for NFT contracts to communicate royalty-payment information across marketplaces."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title ERC-2981: NFT Royalty Standard

Source authors Zach Burks; James Morgan; Blaine Malone; James Seibel

Source year 2020

Confidence high

Importance mid

Format Web Page

"Sotheby’s first NFT sale with Pak in April 2021 generated $16.8 million."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title $17 Million Realized in Sotheby's First NFT Sale with Digital Creator Pak

Source authors Sotheby's

Source year 2021

Confidence high

Importance mid

Format Web Page

"Christie’s sold Beeple’s EVERYDAYS: THE FIRST 5000 DAYS for $69,346,250 on March 11, 2021."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title RESULTS: Beeple's Purely Digital NFT-Based Work of Art Achieves $69.3 Million at Christie's

Source authors Christie's

Source year 2021

Confidence high

Importance mid

Format Online paper / PDF

"From mid-2020, NFT art dominated transaction value while games and collectibles dominated transaction counts, and prior research described the market as potentially prone to speculation."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title Mapping the NFT revolution: market trends, trade networks, and visual features

Source authors Matthieu Nadini; Laura Alessandretti; Flavio Di Giacinto; Mauro Martino; Luca Maria Aiello; Andrea Baronchelli

Source year 2021

Confidence high

Importance high

Format Online paper / PDF

"Public attention to NFTs surged in 2021 as the market experienced record sales."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title Mapping the NFT revolution: market trends, trade networks, and visual features

Source authors Matthieu Nadini; Laura Alessandretti; Flavio Di Giacinto; Mauro Martino; Luca Maria Aiello; Andrea Baronchelli

Source year 2021

Confidence high

Importance high

Format Online paper / PDF

"NFTs can function as blockchain-based certificates of uniqueness and provenance for digital assets."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title Mapping the NFT revolution: market trends, trade networks, and visual features

Source authors Matthieu Nadini; Laura Alessandretti; Flavio Di Giacinto; Mauro Martino; Luca Maria Aiello; Andrea Baronchelli

Source year 2021

Confidence high

Importance high

Format Web Page

"ERC-721 standardized a common interface for non-fungible tokens on Ethereum so wallets, brokers and auction applications could work with compliant NFTs."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title ERC-721: Non-Fungible Token Standard

Source authors William Entriken; Dieter Shirley; Jacob Evans; Nastassia Sachs

Source year 2018

Confidence high

Importance high

Format Web Page

"Gmail is one of the two dominant email clients in Litmus’s worldwide tracking data, with Apple and Gmail together accounting for nearly 90 percent of tracked opens in July 2026."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title The State of Email Client Market Share

Source authors Litmus

Source year 2026

Confidence high

Importance mid

Format Web Page

"A related Gmail API bug in which archived previously snoozed mail remains visible in Gmail’s UI is still listed as Assigned in Google’s public issue tracker in 2026."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title Archiving via the API doesn't remove previously snoozed emails from Gmail's UI [151714665] - Issue Tracker

Source authors null

Source year 2026

Confidence high

Importance mid

Format Web Page

"Users were reporting a cross-device Gmail snooze-and-archive inconsistency in August 2019."

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Location PART 2 - FOUR HIDDEN CHIMNEYS CHAPTER 10: BUILDING-BLOCK REALITY Are Ideas Really Cheap?

Source title Snoozed and then archive email still appears in inbox on 2nd device - Gmail Community

Source authors mvkq98

Source year 2019

Confidence high

Importance mid