So, according to blockchaincenter.net’s Altcoin Season Index (ASI), we’ve apparently slid headfirst into “altcoin season.” Meanwhile, coinmarketcap.com’s ASI is standing in the corner, crossing its arms, and insisting the party hasn’t quite started yet. Classic crypto drama: two indexes, one market, zero consensus. Grab your popcorn. 🍿
Altcoin Season Alert: Blockchaincenter’s ASI Hits 76%, While Bitcoin Slips Like That One Friend at Karaoke
Here’s the deal: both trackers agree on the rule-if 75% of the top 50 coins outperform bitcoin over the past 90 days, it’s officially “altcoin season.” As of 4 p.m. Eastern on Sept. 11, 2025, blockchaincenter.net’s ASI shamelessly flashed “it’s altcoin season” with a confidently smug 76 out of 100. Someone’s feeling pretty sure of themselves.

Over the past three months, some cryptos decided to channel their inner overachiever: PENGU posted a casual 235.4% gain (because apparently penguins moonlight as financial advisors now), CRO surged 179.1%, and IP and ENA weren’t far behind at 164.6% and 155%. MNT climbed 148.6%, SEI added 80.1%, Chainlink (LINK) upped its game by 77.5%, and ethereum (ETH) puffed up by 70.4%. Meanwhile, Bitcoin just watched from the sidelines, probably eating a bagel. 🥯

Not to be outdone, WLD gained 61.8%, ARB soared 51.5%, Solana (SOL) bounced up by 49.6%, avalanche (AVAX) kept it steady with 48.5%, stellar (XLM) added 47.8%, hedera (HBAR) climbed 47.1%, and XRP wrapped up with a tidy 43.5% boost. Basically, your grandma’s fruitcake holds less diversity than this list.

Meanwhile, the Coinmarketcap.com (CMC) ASI was that one friend who’s a little more cautious. It clocked in at only 66 out of 100, throwing some cold water on this goat rodeo. It did spotlight some wild absurdities though: MYX went absolutely bananas with a 17,423.43% rally (maybe it invented cryptocurrency?), followed by M at 2,747.81%, and OKB at 277.84%. When your best performer looks like it’s training for a space mission, maybe take a deep breath before popping the champagne. 🥂

CMC’s numbers don’t quite match blockchaincenter.net’s on gains, even for coins that appear in both lists, which is crypto-speak for “we’re not really sure what’s going on.” Since that epic run in 2021, these so-called altcoin seasons have been about as reliable as a cat bringing you a “present.” Mostly, they flash brightly and then disappear into the night.
Not that crypto fanatics are deterred-some have already jumped in to celebrate the shift, with xAI’s Grok tracking dozens of X posts buzzing louder than a swarm of bees on caffeine. Will this be a lasting trend or just another brief flirtation? Only time (and probably a few more indexes) will tell.
So, the ticker flashes above 75 on blockchaincenter.net’s ASI and a modest 66 on CMC’s, while bitcoin’s dominance crouches just below 60%, at 58.22%. Like a toddler clinging to its blankie, Bitcoin is hanging on, but altcoins are getting a serious attention boost. Stay tuned for the next episode of “Crypto: The Never-Ending Soap Opera.” 🎭
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2025-09-12 00:38