Anna Sofia Helena Källgren (born 17 August 1970) is a Swedish singer. She sings in two other languages, English and Mandarin Chinese, in addition to in Swedish. Biography In 1982 she debuted on the
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 0x1c48d87e6869e13b5c36155aaa1208682ecd7f8135498bad8e132e2619620465. 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/ff5d0679-3405-4ce9-a9ed-b81f2f522cb3.json and https://artists.proofprofile.net/proofs/artist/ff5d0679-3405-4ce9-a9ed-b81f2f522cb3.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 0x12a133fe04259f1712812e62fc9dad7c3b71b0139da8317c21df50c66d8c7988. 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/SEBGA1601226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a4981ed33c608744fd5605822916efaf16a15c651370912e7fe8051d2426e9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:05Z), 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/SEBGA9002016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44a26d778da6500df60369b2a4d5af59f867a7337bb75a9ef93b659e77ea81c. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/SEBGA9002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a85f1228fb115285a998be3383f026d28826d7da100c89fe3091b5cf37f225. 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/SEBGA9002023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce59bfaa34072eabc99e761ad23cd37affd038b2409a039ff49440eef87fe52a. 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/SEBGA0800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334bfc852176dd1e68a8019b9543a9efa750fef42642290c4bdfe958a50e760c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/SEYFS0800102.
Mio My Mio (from "Mio In The Land Of Faraway")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81efa3f664f423b4d499813d932c9e7432d7efd7e7c61df3ee5cb45a37f62d10. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SEYFS0800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35248cdbf2fcc4b6b46911b12f58d80345678fbcafef01ebdcb43444e8ebde7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:21Z), 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/SEYFS0800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16534859df151c0f0a7564ab3a3fc5598375f43826e171af86af48d68c86e0b3. 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/SEPQM0614869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b4a94adbc6f51e60d6caadf4dd90075806cc48b3ea06af2ce687f754a8878b. 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/SEBIA0300154.
Skönheten och Odjuret (Duett) - Från "Skönheten och Odjuret"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71792f6d358a0014bedd99c816e4925d75c9470f65fc1a9968e0efbc6507332. 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/USWD11677067.
Jag går dit du går (Con Te Partiro / Time To Say Goodbye)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a156261e0c28ca45d07754f66a54ca0fa680e021b2a709d2816cab41d9b2484. 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/SEWDL6144534.