Kobojsarna is a Eurodance group from Sweden, founded in 2003 by Mikael Collin (previously Danielsson), Emil Carlin, and Richard Mellberg (previously Pettersson). Richard left the group in 2010. Kobojs
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 0x81badea23921c5f8f33dfebe1c618b8b718e40e91bde3a0ef2b5d7f7f10f48f2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b890c9ba-a3dc-4d50-ae1f-cb6e80f28a01.json and https://artists.proofprofile.net/proofs/artist/b890c9ba-a3dc-4d50-ae1f-cb6e80f28a01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482317bdf03853a544ce7c3e8bbb28f159231f33b5a7adb91b5072edb38d2f01. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEPQA0651390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ccf633317aad2d7fbe31bcb84ee2dd049d94494468d498308ea60d2b78c118. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEPQA0651411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c65d8f23fade1f5b088f764842a8804e6b0ee8bfd79b61c1b3ba2ce77c6fd6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:21:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEPQA0751872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9e5a1528eb0b0ed724076b95563bcb12a42bad68e00a538b61a76e35886750. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATR981132215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b6b7d10a399ea61b3e5fafa43b39566571fe069a06308271a2697dc2b78fb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATR981132246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf898e815908793508fc349e3315f72819bde2f140285e558c600ed37889690. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATR981300994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb062b17b1e5e4927f001140a3a2f7ac68d715e6279ae73e595fc73a14edf82f3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:49:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATR981300995.