Samir & Viktor or Samir och Viktor was a Swedish music duo that consists of Samir Badran and Viktor Frisk. They participated in Melodifestivalen 2015 with the song "Groupie", which finished eighth in
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 0x8382e6d9e278917e379e44a76b2d5384a6235fa4c04682f267529790f14e5e2e. 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/7927aeee-7355-4a1a-a9a6-0a342f5a2ebe.json and https://artists.proofprofile.net/proofs/artist/7927aeee-7355-4a1a-a9a6-0a342f5a2ebe.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 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 0x9bab41b0356a7e09d37adb829e1a5c96c7d847d718626e48e48f116064848368. 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/NOUM72000218.
Hela världen väntar (RASMUS GOZZI REMIX)
Hela världen väntar - RASMUS GOZZI REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393068bcc34ac98a4232a288279f1bbf4dcb4c1eaaccb9e10ba40acd32da0616. 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/SEUM72400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8901118d6b9a4bc130986050ffcc0aab561a2666aa898aaa2d73219baab1cdc. 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/SE5YN2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e0169e82ada1819f5ad01f56f86df6a99fc5ab84c08beafaef1485bcaed0f7. 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/SE62R2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373bb93e25c0eb96b05f71359cad455268504791d6adedb22181c86a8a45454f. 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/SEPQA2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c29a2aad05a26c8840609a851eaaf02f89829635e5b858af7df7bc0d32f16b. 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/SEPQA2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab97344a17382446655489ce349102da7193bf47c5996c15804ff0682872faf. 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/SE62X2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0226af7ecfe2739a2f887f0e9e9175c8474038c56cd31c7bf7bd28dbe142c3c4. 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/SE5YN2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b7733a92ac01e7d428099c579ca868e5ac76f5e034b518e395eb472d71fa86. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:22:17Z), 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/SE2VK2101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b78775e138b9c53cba36d09635bf4fb7fb69a7dda06d2860a5ca40ad71357. 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/SE57N2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1494005add053ff44f748cc4945f31b5c28b28c0baa875c67670046dd9f2ca7. 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/SEPQA2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263ace78e05c01b04e1a378ac94b0d00270b3c86a69602e153972210fb847cda. 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/SE5YN2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379a8fedb15e6d3f5deef27133b3c3c52678020db19fd2d41814660a32b4364b. 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/SE5YN1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4cbb8a1aace17a8571d3d802f727e217b89e3ff6eef4e7db120a8c587b4a9a. 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/SEPQA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8da71a0816ec255b3d34b977a9f97e4634b10a28cfc092e96d55df21995a17. 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/SEPQA1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bb1d7cc7937482d896ae165bf461689434e9c00ee8895b3adc5b5e7c98d47c. 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/SEWZW1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf993b6daa37dcf8cbfc5068aec7fa6cc19687f644f8680c9d691520eb844ff54. 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/SEPQM1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dda64654d7781ce2cb93b4d5d244e19a7ee2371f78ad183262a7b280a6c9c99. 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/SEPQA1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2afd49ef45f0a5b79134ed7eacf34730692d45b8854074dd5bc2862d0d6b52. 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/SEPQA1100006.
Put Your Hands Up för Sverige (feat. Anis Don Demina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d233b9ca52bc5f7959970de95145500da98e3549dec6d209bd40fcd955b1af. 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/SEPQA1800261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5e284f458190844fc79f0580af37e3e3b76c9c017c3957d4345eee35db6c20. 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/SEPQA2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f0674b0cd01eed22e45a41d28431104820a2b179ca15483c4359ab86e8223a. 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/SEPQA2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a474434a0536c2bcfe533699dbc8f0c3df01a94aa65d41e6e6ee460ea607a. 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/SEUM72400891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda17f8dc8f78dab9f691e21d530783e9204ddbe63d2fc686e7aa642d53d8b947. 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/SEUM72400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3c8f2a739717ebb98a11ac51435b7649e6fdda0421aaf8ee9a368083551cf3. 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/SEUM72301758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974b9364f6b336ace31e7a9888534163174b4aaf673040881335f24546cd77af. 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/SEPQA2000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9693a0fabd98233b268a11f17ff302e0fb7dde673950edb9cca1ad748155264b. 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/SEPQA2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bab41b0356a7e09d37adb829e1a5c96c7d847d718626e48e48f116064848368. 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/NOUM72000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a40aaa32e21cd38de705458d4a086b76d72d779120ea14779d43891ae11e09. 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/SEPQA1900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7333af0996bc243ca28cc93c22e9332da19f78344276dcffd602b3b7daf20ed. 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/SEPQA1900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad99b6a712d5c13c52aa245d2863c1ce5fe575185d72e802f5e9ff602182dfd. 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/SEPQA1900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa68d8d2af05db56fe6d3c2b16d1586c0646a6e8994ad10bddff4561c2a0997. 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/SEPQA1700259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99573ac47f57b0b77be82e2706eb039e122028a7c0f0217146267594139060ac. 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/SEPQA1700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4443c1b8264f2a1ce6c1ccc7845d8c9aeecd1b69c2fd5f79a7940da90a160453. 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/SEPQA1700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0b233675409c5f2c0b7d30f16f8658991e656601a5129e91b4a4841e8f6e49. 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/SEPQA1500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aa8ee6bcffc49965d0eff5648ebb5094e7c87501cc89ecfd9464d40f012506. 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/SEVFN1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e7f63373d0f7a7d7418bdccbc827d1db72c31dafb9dc9ff454815ea25787ad. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:16:38Z), 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/GB28K1200049.