Kalwi & Remi are a Polish DJ duo formed in 2003, performing electronic dance music. They rose to fame in 2006 when their song "Explosion" became an international club hit. The duo have performed in ve
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 0x67e2ab69f5bafffa27d835fed150ddbb08f545846543a65ffe2fa4e7705d0121. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46cc10fd-fb28-4c08-b86c-5e078223fd36.json and https://artists.proofprofile.net/proofs/artist/46cc10fd-fb28-4c08-b86c-5e078223fd36.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 0xb45b04da78de774ab5fda1dbfae4354d7b667501154815c8be9e38639fdb691d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/PLK021400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e51ee40b7ca675d8d0fbb921ae94c718bfa7b937e6afc466b7d24e3323a376. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:46Z), 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/DEN950501411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e71ef3d3a709356cff72abc308eb81e9590bbd9e01bce5a11d5238fbd74029. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLC060900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1a67f03fb6d54eec1b6f3c9fb2dbbe664ccf834d5105b7e529a9efcd4d89d. 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/PLC061100797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35b68072978f48e47eab3237b8aaf83132ec34ff376714c749894fbd92eb26. 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/PLC060900506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea64f4750d516aeddd7ef54688913febbd6d2b8c1da299fe24632751784964. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLC061100799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a7bcb2709a0b72a5d8d13db7799d5259e5147267f7e63f7c41b931eacc81ad. 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/PLC061000560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a147f01694df701fa3cd252d8fbd745b97f89c9a98eed119195fd129d34d2b. 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/PLC061100800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5937f2442a5a58507bd5aa7e950784de4f4c097b426050aa68370f6f89df4b43. 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/PLC061100802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc78dc69e679840bcfb976c12845984ec02d72c0c7f3f0faeb77413fec3ec990. 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/PLC061100803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e71ef3d3a709356cff72abc308eb81e9590bbd9e01bce5a11d5238fbd74029. 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/PLC060900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f288f388781e460993fd2f993a42d176f5de0b3d4387a1954a58853de58dd02. 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/PLK021400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8720be644c7acd58b6b27e2990456f1908e38f1bf751bd337db8875d93bfa8. 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/PLK021400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220bf16d184cbeaac99f6941652ca98c8a436fedc3eb785c8f8690c42ea07968. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/PLK021400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf15bf0c14294e924a8d07168a31b059b9c74fd05b207f63731cbf60f3163763. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/PLK021400031.
Explosion (Sound Players Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edcf813259a517244825cae06226a893c00edd7db720204d5df06ace624dc4f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLK021400066.
Explosion (Alchemist Project Club Remix 2006)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee6601eb9f0f0be0f9c1b0bdb48f8aefe8b061f287950b5bd64e3d5d80f76b6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:01:37Z), 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/PLK021400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a361f85a39a6cb688e8c9dc1a156e791dfe93c00e58d599346badea81f707. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PLK021400097.
Explosion (Mikro & Lenny LaVida 2014 Rework)
Explosion - Alchemist Project Club Remix 2006
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452fb2f3fca7bcf031ab89e340ec5901754dc5d6cb46f6befe4f8e96ef5e00f0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PLK021400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5444d43f8f5c711c8ae25d6491938b5574988511f8b6906b9b199ce52c15e46d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:21Z), 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/PLK021400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a361f85a39a6cb688e8c9dc1a156e791dfe93c00e58d599346badea81f707. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/PLK021400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f289ee5783edb0b1322263d1bd4c5f07969a93ce22923f6d4a044de2475f8e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/PLK021400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbb5b51f3f3c9dca718af03ab56037947f12e1cc07c18ec5c37d3f0f97f8f1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLK021400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f393b4e4f03f01c69a2860366baffaa68514563cf4abf7d1f475348664a3e41. 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/PLK021400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b23b832e1b0353b459aecb2e45ae8c2bae1769c0d8b0cbe610fa6e169c8c1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLK021600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3f83088fcad6514e773772b5ab92d1295127a63dbe19b392e0b4c8bf6a4853. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PLK021600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9d310a41298c1a4e8a4dc3057746f2feceb606d0f80f2359d2288ac3e1e6ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLUM71800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d4ec31cf94ad8837669d5b49c440a35d06b3967582fa70edb478697ace511b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLK022100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e8951a12683c0e5fc4cffd24a6ffd60dfa688443990294e3fff4a948cb6888. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLK022200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e8951a12683c0e5fc4cffd24a6ffd60dfa688443990294e3fff4a948cb6888. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLK022200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804511647d2ca8dd55ad5070fc4a8ae17135cc2569c14bf87dc4f517730a316b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/PLK022300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fee4c205bf8fb605db6f5169e2acc2de634fba60cb6723078cf3cfa1b2cf17e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLK022300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fee4c205bf8fb605db6f5169e2acc2de634fba60cb6723078cf3cfa1b2cf17e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLK022300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc24fa2c5361517ad40a2f98276c1af6719dd93b6bd857fd0980613c3baeaf. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:45:18Z), 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/PL06V2438833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc24fa2c5361517ad40a2f98276c1af6719dd93b6bd857fd0980613c3baeaf. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/PL06V2438833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c98c17b60a703fc188a72c0c2ee197fe67f11cfd00ee8598a89966bbfa0f7f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PL6A22400821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1084df405aba14e6304a9b49838f6663be9b9f15c8b57ac3c931d55c34670333. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLH492576440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1084df405aba14e6304a9b49838f6663be9b9f15c8b57ac3c931d55c34670333. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLH492576440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45aa74aff7c864ed96ab41984176bd02c459085f447505c71a415cbb12f3db9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA062569414.