Tangerine Circus is a Mexican progressive rock band from Mexico City, Mexico. They evolved from a metal-oriented style in their early years, to become one of Mexico's most promising progressive acts o
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a634b908dff424d994013fb4564b90f2624a1d1a31ec12e9906090a72301f39. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9dbca15-00b0-4696-ba9a-e389b702aeb0.json and https://artists.proofprofile.net/proofs/artist/f9dbca15-00b0-4696-ba9a-e389b702aeb0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Urania: Live in Mexico City (Live in Mexico City, 2019)
A Live Encounter With Ourselves (Live in Querétaro, 2019)
The Live Conspiracy (Live in Mexico City, 2022)