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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148f5f8ce9dfc517b3547e135c21ad519ef47d15678cc8d72566f88c58267c8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). 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
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 957124 (2026-07-08T03:53:27Z), 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 0x7ab76572c5c8bd14b0296e350c00883326b5645dd113ccb2ec9796c5e4953a96. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 957145 (2026-07-08T08:56:20Z), 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 0x650cd28ae05950cf61f451de897975e383fa42094e458eb3e0cad88a7ff0c13f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 0x8c10a016202dfa99be07764850f2b1d6970e0d1a17ffe227cf0e2f852a42b8b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 957122 (2026-07-08T03:39:04Z), 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 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.
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 0x7ea59d7a819866a125c0ea61b5a5437ea32e9b1194c2945822000dfd7c878f2b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 957145 (2026-07-08T08:56:20Z), 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 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 0xb2feb1b998824ad5170a75778388ecebb87778d21d1c7748cce7be71ae0d9cd0. 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/FRDX62206690.
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.
Charnel Winds That Brush the Pallid Stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097fd848edced4e7be485aab970f25cc4ce4a1b8ddb5861d64adf6a8abc56dc8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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