The Sun Days is a Swedish indie pop band from Gothenburg, Sweden. Formed in 2013, the group has achieved success both in Sweden and internationally, with their debut album Album appearing on multiple
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d2bbb9e820d3675f415f69fe920d026c8255c894745230b2cdfbfadd3893b2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57da6d57-fc56-4019-8e4b-f1ae02dfdab4.json and https://artists.proofprofile.net/proofs/artist/57da6d57-fc56-4019-8e4b-f1ae02dfdab4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).