Westkust was a Swedish rock band from Gothenburg, Sweden. Formed in 2010, the band originally consisted of Julia Bjernelind (vocals), Brian Cukrowski (guitar), Philip Söderlind (drums) and Rikard Hjor
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 0x05772efc61e9711289c1f20ecedbda03932d46116e504f2aa9867b84edb1cc6d. 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/7c837cf4-8a84-439a-a064-13e401c1e1c9.json and https://artists.proofprofile.net/proofs/artist/7c837cf4-8a84-439a-a064-13e401c1e1c9.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 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 0xb5cb95e90f0474ce49041935492198bd9dc67dcc0ae4ed269bbccdbb9e23aca7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SEYOL1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55c564754891105b8113b9ab389b6c313a01e163de0ea611027840c05590d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOL1900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cb95e90f0474ce49041935492198bd9dc67dcc0ae4ed269bbccdbb9e23aca7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SEYOL1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55c564754891105b8113b9ab389b6c313a01e163de0ea611027840c05590d7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYOL1900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66f6c9c02df83601b9038993a401ce3e4a778ff5aaf5adb2116f142c57bb8f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SEYOL1900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69f46377f88568cadd74432d3d50e5dec8c92adac7e6a6767b72146613fd49c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYOL1900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbd0344a1f55afafe6dded359181307fb66036ad47ada7b754ee34eff791c0f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYOL1900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049aa26f8b8b38e294de731880157ee43954950a22633e7121039a5bf54bf5e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOL1900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f5f00504a30a825bb12f4eb5c6188eabaa814c81e99eb123997750b5a1104f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SEYOL1900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345cb84c090ee8843b9d8e24fb01022c5c0b5515371fbf166b2f07b7ce172a72. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SEYOL1900209.