thumb|alt=Logo of the LSR/CITY project|LSR/CITY logo LSR/CITY (pronounced "laser city") is an electronic dance music project and immersive concert experience created by British DJ and producer Gareth
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 0x127a97c2616ee0c9d56d620cf0cba27410d8e360d396ab78c5751034df0dd4ad. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cedf9e6-2ac5-4093-b4b7-865fe61d8121.json and https://artists.proofprofile.net/proofs/artist/8cedf9e6-2ac5-4093-b4b7-865fe61d8121.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 0x9857c5d4dc85efc1d57fb47326a0bf0c07a0e7125ab8f0b452e9057912986b17. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:32Z), 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/QZA742524530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1db7b0d6e5c51856af103275b1fc43788d3bc11d50249327a108bed50ea401. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2381579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dfb7e14f1b6f4d1aef414ae72e4ab8e93e0d0723004de75c70b4613fca6902. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2387679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacb43e04ec3d42c4dc01d1fc9588f061c5050f25d28a46b0905ab5af5bd5dc1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2397918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee69555e810ddc711881914c709782b06c56dbcf11a89af6b80866ffb6837af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2419927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433712b22d676548389d4adc397f6ecff31e2643e3108e484d77f31c7ad19f00. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2435679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ad601b0e646b1ee6451e36b020461faa87a1c480d056898e993892fe107e15. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITJ872400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9627a8a0b3e9e09f1882212b6de3a76298ebd26a3d61fc5dfd6788fad50cb3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITJ872400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed8051759cb547d0f343f09b680d70eba97aef3cfd515eafe3a299ad250da14. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTGW2404745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed8051759cb547d0f343f09b680d70eba97aef3cfd515eafe3a299ad250da14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTGW2404745.
CYBERPUNK (Original Motion Concert Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5786634f2d8b1aee0f878c081d582d9e391e049b9a8ad3be34be8c921d5ff2ed. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:37Z), 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/QZTGW2406579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9fc83a4431d2ca4df11a5b40fc5311059b6a664defe5ac89ccad1e2ade0098. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:18Z), 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/QZTGW2407395.
ASOT 1158 - A State of Trance Episode 1158 (Including Live at Tomorrowland Winter 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304e052978ad9c4df3b0064ac2a9394e799718c6a97a969e096b51fa1e7d23d5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF712400626.
without you (ASOT 1203) [Future Favorite] - Club Mix
ASOT 1203 - A State of Trance Episode 1203 [Including Live at Ultra Music Festival Miami 2017 (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbdbb0ab916edbcb08b45e8a4597b951d6b9f93288dc1f2117708b6727e282c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF712410278.
ASOT 1145 - A State of Trance Episode 1145 (Including A State of Trance Radio Top 50 - 2023, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ba9160b566575b4fbf5f1564e94b2df946ba402d996c3de2d777fb4ff45f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLF712308024.