Evan Campbell (born May 30, 1997), known professionally as Kettama (stylised in all caps), is an Irish electronic music producer and DJ. He has often performed and released music under collaborative
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 0xecb43ca13d0deace283108c8ecbf8080bbfbbab90f2684c713a08453a0112948. 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/4267d4b0-7e8b-4930-b728-e5d3e8584482.json and https://artists.proofprofile.net/proofs/artist/4267d4b0-7e8b-4930-b728-e5d3e8584482.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 0xa8da98ab49ffd31931be082e2af150815fca805163d701ed7774b79c7f4d09c1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBCFB2100870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca6c105c475c2953169fc3504d8f240159476cb6e532cf5febb3baf2c31928b. 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/GBCFB2100872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd3fb39813ff6f880bcee9e5309c70c19f7f0aa3083bd9ffb71186dad0f4d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BEZ352000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cf5ad0c9442228c3df955951cca20a17bf48adcf56696f0cddb9a46e85d40c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEZ352000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd3fb39813ff6f880bcee9e5309c70c19f7f0aa3083bd9ffb71186dad0f4d0. 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/BEZ352000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8da98ab49ffd31931be082e2af150815fca805163d701ed7774b79c7f4d09c1. 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/GBCFB2100870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83afe786e646e258629d728df801070fc612dbcc334990d5ccae65d1fec81dd4. 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/GBJX32375032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d388fc51aa0450aad7fc129793681a8adac282781ffa6ac6646e1f5897d59c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZXT2351084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350bd286566881021254d47351869ebc9c455ea36cf1440b9f5a8a10079a379. 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/USZXT2350883.
The Way It Goes (Track 1) (Chris Stussy Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d81d29b24ba56ec6fd82b74fbdb63de3f3a9247ddfb7108870203ce3b11b062. 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/GBBXG1900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433e2c5454264629788766698902046e038a205cda5b5e1930e13a886ccb9b2d. 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/GB8KE2057632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d1bfb8315f2d5044932cc1e9630a38f265a2c0f7aa594e3a3b429a22f737f1. 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/UKLAM1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2803d29fafd1a6e9f69aed58cfdb3ce714cd758f0e4de0ca94e722fd684080f6. 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/GBLFP2168518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e9598a36764a904dd077c81dd59cc6a562eefde5477c1f74e1e63f275e9a9. 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/GBCEN2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e42bcb80320f466a3fe4d7d9276a921acef9a7df43aabb7e58ba0d32ba2baac. 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/GBCEN2400139.