Sara Therese Löfgren (born 11 April 1977) is a Swedish singer known for her participation in Fame Factory and her song "Starkare" (Stronger). Background Löfgren started singing at the age of 12. She
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 0x4c1b8d6c3dfbcc6096a823bea2243010a153543303a378e2c3eb68de9be38bf3. 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/a561ff21-d45b-4240-93cb-62d25c5f4d31.json and https://artists.proofprofile.net/proofs/artist/a561ff21-d45b-4240-93cb-62d25c5f4d31.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 0x5b9739e90d60407d30ef465dda124f4d88caf983b3ac3043c8f465a39fc920eb. 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/SEPQM0610114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e011bb67c4b4c235e9ab0afc1c82968286e26a18329058feb86eea66c71ea54. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SEPQM0610115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70784db5ea7ac9378bae65322010adf78c631069a8cb7ab42f0ca8c4f830d0d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:10Z), 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/SEYCP0900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e1468dfe2267eb751536d7660ddfc27e5b0638301a5dd6ef691a9f89e6d1fd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SEVCZ1500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f042ab31169a0a397f6317da5f1280dc4640868a6b48c25fce1b4d4075f82. 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/SEPQM0610117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9952a77b21fa6d5ec75a84ed1699091bed11a6bc5f97b4e34f0bb45c802cb2. 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/SEPQM0610111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9739e90d60407d30ef465dda124f4d88caf983b3ac3043c8f465a39fc920eb. 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/SEPQM0610114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f042ab31169a0a397f6317da5f1280dc4640868a6b48c25fce1b4d4075f82. 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/SEPQM0610117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076873348f84436b62b683c843e53d202e15f3ceae384f1e573363db688eead. 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/SEPQM0613083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26701c74b62b0c1d1bcffca5239c32dda8e7983784c3bb665678f2888c5fef9b. 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/SEPQM0610110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe441d390b000be8fd4ae43f860f16aa004fcd50b1e549e776e9b7023a4fff907. 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/SEPQM0610113.
Svenska Schlagerhits (New correct tracklist/audio)
Barnplaneten - Upp och hoppa, dansa och lek - Barnmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3814a44da115ac567d856c7fbc8d32645a82ac8a8c2b9068ffcfcaf963cb4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEVGT1500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3814a44da115ac567d856c7fbc8d32645a82ac8a8c2b9068ffcfcaf963cb4. 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/SEVGT1500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe441d390b000be8fd4ae43f860f16aa004fcd50b1e549e776e9b7023a4fff907. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEPQM0610113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26701c74b62b0c1d1bcffca5239c32dda8e7983784c3bb665678f2888c5fef9b. 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/SEPQM0610110.