Alfons Karabuda, born 2 December 1967 in Stockholm, Sweden, is a Swedish composer and EU cultural politics personality. Karabuda is the president of ECSA (European Composer and Songwriter Alliance),A
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 0x76a9185de6cf3fe9c7c25945f3a7e117bc8254e2a11b4441a08a8593f6b7b480. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bd325eb-acdf-44f6-85cd-471f2497e899.json and https://artists.proofprofile.net/proofs/artist/5bd325eb-acdf-44f6-85cd-471f2497e899.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Death of Tintagiles (original theatre soundtrack for National Theatre of Sweden, Dramaten)
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 0xe123a939f030dc2ecb79c751bd7053e6a78eaa17ab7babd5230ec39932d11909. 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/QZTAW2201748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da2e241c0b976493a2c9034f369c93037915dd50d800813cc783b5834f3a1a7. 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/QZDA62412584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6523f7523a10c2bf9ff8f33867d6de0f219372eca3b728453f5a65ccd9d36bb3. 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/QZDA62412586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033ae433de25dde6ec2b1ced406695525472dcbec2de0c3100aa893ada21c435. 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/QZDA62412588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a41730fe16a2536bda01931fe13807aca5899234d0d94073081e78bc69a227. 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/QZDA62412589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddc17429bb7b0ade4020f156a054fde4bb667efea0632d9186185ed4c231f31. 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/QZDA62412590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2224b833030ee22202192b540cc4bdb524ae41e3f487d15b8810c892552bf45b. 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/QZTBB2451975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146aaa749f3b19cc665f2648e44369151829518be31a1224ecde458fb4a192e6. 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/QZES72588899.
The Scores Without a Movie II (for visuals and dance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb555ee856e92acf7dd6adbecafcda12d6117a1b8fb169e37199ba54e6714a89. 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/QZZ7T2451797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a8547b4ea5f3bed90d2934b77218d9a131d0f853e06cad3316b062a758f9f1. 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/QZZ7M2424110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2871865ac1254a0564557a202e6f5be988e7d78d4bea582e774b75fd7635fb0. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/QZWFP2499384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9734b421c7388e85dddf4208817238ca47ebbac2c2f74ece0fd72cf91ab2839. 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/QZDA52565169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a815c1021beb7dae6d57fa1d5b014d395c7e84213a4aa7e39e9e035b10443. 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/QZDA52549696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac391cd1bb459f134f87af520345c38327039b0ccc7c8039a87d98c53c5a5ee. 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/QZWFV2434254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2224b833030ee22202192b540cc4bdb524ae41e3f487d15b8810c892552bf45b. 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/QZTBB2451975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a815c1021beb7dae6d57fa1d5b014d395c7e84213a4aa7e39e9e035b10443. 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/QZDA52549696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb555ee856e92acf7dd6adbecafcda12d6117a1b8fb169e37199ba54e6714a89. 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/QZZ7T2451797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a8547b4ea5f3bed90d2934b77218d9a131d0f853e06cad3316b062a758f9f1. 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/QZZ7M2424110.
Childhood (Original Reminiscence Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc3a1fe77253bbcbc72a9b3843ebd30b61a031eed5328ff97d5920bea527287. 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/QZHN32553035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24653ca02ebd5a050666ad27ed3df540a4f2d08e4a43aab571f025a1a690daef. 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/QZNWR2502051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d93d3e5170af1879273d900b660fe4df2754acbd85a644dc09133c564692c51. 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/QZZ7Q2508248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e24ca7955a09cabebd5c8da7768ec550197b0cecaf95b20744e1e107cb7699. 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/QZPLS2526734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4e3107173c26966603ac3910c7355fe1da7f273289f750875431e27a2d90e1. 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/QZNWZ2588962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac6310aafdb4c944b85c550e114303642b00e86d729ddb1b62ca37ed68fd73d. 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/QZK6F2524738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e71941695c5181393939508884d04b1668c765da9d8c748fb549f63a9b5a85. 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/QZK6M2572509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb668d535dcc2be5d1365d41fd20a4855e0a66e7aff7ec2e586fb49718cef09. 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/QZK6N2509570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cbdb9765cd05d3737aed2a0e8e99e3e6a3c029c3e8471e3a0d3542c54eb526. 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/QZHNB2535290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a7fa4425fcc51fc82fee9a1d589e5b032917719e695297a67e8fd7dc09705. 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/QZHN92577242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea39442b91579952b502ff4031ff71e55e41ced1f88378b02d1b19feeb7e9f72. 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/QT3F22532845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67521369d266ec9a2e46371d5facf76182b4fce986731083286a25690442e8c9. 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/QT3EZ2512731.
Crystal Vigil (Original Motion Picture Soundtrack)
Great Highway (original score, Kulturhuset City Theatre, Stockholm)
Sunday Session "Childhood" (Original Motion Picture Soundtrack)