Check a pick's record

Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.

Recorded and unchanged

Recorded on 10/12/2026 at 11:36 PM, included in the fingerprint of 10/12/2026.

Pick: #1013036Paid
Tipster: Cultu_ (@Cultu_)
Selection: Hidden: this is an unsettled paid pick. The fingerprint stores its hash; it can be checked once it settles.
Fingerprint of 10/12/2026: abfcb5ca ff0e57dd cfd3edff 8ef9bcb1 7581143d 6eb3fa7b 89b37303 5a61d0a1
Pick leaf: 4b3d5d81 e240be57 3aa4fc3f 61d10a1e 0d217648 fbcfcd42 2e26fd87 b47a4ea5Position 588 of 593
Bitcoin seal: Sent to OpenTimestamps on 10/13/2026, 12:15 AM; Bitcoin confirmation takes a few hours. Download the .ots

Inclusion proof (7 steps)

1. left 2c31e6dade1e371d34bdcd89d53a599e966c60166241d43ac4300e6414d64e46
2. left 4c3fcc9428075395a5602aea6f07fa08acd2ba4dbbdb2e757b96d6f64276019b
3. right 369f31833cc4fbf45e965414259c503a9557c01b87008273a68e1081e62b2922
4. left 53d06536d0388867844ebfa2903b284ea9c6de6e6798424cec350bb894f76bd0
5. right 598c7052fb56077c911bff1f5acc7b957a2666afa4d095db8443632cdd98843b
6. left 61e585dbb2a219896fa7ae9478b80010d3d8a537d1baeaedebf61985db6f7d19
7. left 127ec404a34cc07266e9a436ca200ceb0408ff9ae56dd109173b33500edeb12a

How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.