Alexander Kassberg (born circa 1988), known professionally by his pseudonym Starving Insect (earlier on known as Despairful Tomorrow) is a Swedish hardcore techno DJ and record producer, who specializ
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 0xd148f5f8ce9dfc517b3547e135c21ad519ef47d15678cc8d72566f88c58267c8. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3af79acd-6c58-4481-9de9-d4d6ab824a97.json and https://artists.proofprofile.net/proofs/artist/3af79acd-6c58-4481-9de9-d4d6ab824a97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hardcore & Gabber Arena - Hot Elements 2015
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 0x533fda466e51ba3e9f19bd7058e5148927763669e733c5b74a437196c7c50b2e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEAR41527262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe6fb1df9e09078ffdfc83150beb904b54eecc11aa22ea4fd3e45eb068389e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR41527259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccf5850aa06006cf8951404a3d96d44d2688d61eb49fd59fc565d438fe8c15b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLTC31301046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941047ddc46bbc0e94858f26e41338260834d87d9ad05897a7ca362f0505e3d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42215874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1caa19410604662a0e8a53344b35f5ecdbd7fcafe628582155ad5e8050d6b5f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/NLCK42215879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab76572c5c8bd14b0296e350c00883326b5645dd113ccb2ec9796c5e4953a96. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK42218092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b555f5141913857acaacdcb701fc1f3e4a30fe0224f830237477c4fef9de3aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42416608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ab3a4901dcb3144775623ccb809d50ca3cbc211384545de8b9c25ffb2fe62. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/NLCK42416609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650cd28ae05950cf61f451de897975e383fa42094e458eb3e0cad88a7ff0c13f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK42416610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76df1fa828be60708327458d96f1b52cd7f15c09af95d0320d14a3263178220a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2P2210447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c10a016202dfa99be07764850f2b1d6970e0d1a17ffe227cf0e2f852a42b8b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2210450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73624912a990f11c2871782f708ad3b2cca6f668c34f7f7398bebfbbeccfd521. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2210448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea59d7a819866a125c0ea61b5a5437ea32e9b1194c2945822000dfd7c878f2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLH3D2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d8c7fd0006f220150a4a2636b4a37dff04a357a25185e380a9dfb5f5a65bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLH3D2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b66f24d2041d0e8c4ffa788dbbe624ce506b85e5473ca351c19163f6f24671. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/NLG422300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a62e7d88ab71243e44c8251015534d9c8571e985b1791ed13cc0075cbbb927b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLCK42232666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80c5968572b42201de7b0bc66a943f25a18ff845ddb03d2b964b59cdbd40f7c. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/NLCK42232667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5df4e3bbe648972396ef43af4070f3d559534530a13b1fdfde20635839f5bd. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/NLCK42219975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f8e747871608b2772516f6a21287154146f2cd37bc96797f6242ea78607b14. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLCK42219976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5df4e3bbe648972396ef43af4070f3d559534530a13b1fdfde20635839f5bd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NLCK42219975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f8e747871608b2772516f6a21287154146f2cd37bc96797f6242ea78607b14. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLCK42219976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22cfbd590cef0da6a2d9fb07b6662a24f781a0e90ab806c33abfaa929d7bb08. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FRDX62206660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2672960cc69bcdc954521df521750593146c8079cfb1f3c8922d8acf864f9. 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/FRDX62206670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f080dba0bb16857d4c936d6701374f875fd4e5d2037a95c08cef02b1cc29c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FRDX62206680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2feb1b998824ad5170a75778388ecebb87778d21d1c7748cce7be71ae0d9cd0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRDX62206690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d2614e28b9eb1c7b0e7ee021428dd85540152974f894596deeade927a1c4da. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM82148912.
Charnel Winds That Brush the Pallid Stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2260f95da28a93f6e921d837184cfe527df6880e9b39ecd7a8147219b79ccc15. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BEDB21900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced295267508ba4acd12f3a99b1e5ad75be225a37dfc9f729c92db54e82d4e4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLTC31502292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58adbe895f48f841fad5778da42a470f593d4dd9405f6622ad091fa18a344cf5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEPI82015928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097fd848edced4e7be485aab970f25cc4ce4a1b8ddb5861d64adf6a8abc56dc8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPI82015931.
Up & Down - Nullifier 'Gabber Is Still Alive' Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c68f2ecdef5325a440f3c097b2b2fe0164eb96a9a54a93f349a7c4975330a6. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEPI82015932.
Hardcore & Hardstyle - Act Of Force Vol. 1