Elin Gunhild "Gullan" Bornemark (; born 28 November 1927) is a Swedish musician, lyricist, composer and, between 1951 and 2007, music teacher. Bornemark was born in Härnösand, Sweden. She wrote song
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 0xd0a134493c014bd5154f13ea0f9195552076ad0a43c83be7f6224bcb0f4c3f8a. 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/d3508ac3-4d54-4c38-a517-488634cad06e.json and https://artists.proofprofile.net/proofs/artist/d3508ac3-4d54-4c38-a517-488634cad06e.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 0xa2ebc1e705754782389a9275f89e4bc9bd17f3fce500f54fd5e26668f3d0c155. 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/SEPQD9320040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90b0ab48530f90bfa957fbfc1d4402e38cd9ba5e88aa11861bbfb25411940c2. 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/SEPQB6211090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e9f77d2c829c4c9dd8a8ac1b51324d78bc55b9e1cd03b7c001a43899226d4a. 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/SEPQB6211110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940390dde397e4fee380c88f2122e752f61947ed9a309c2f9740723995907483. 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/SEPQB6211120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86d1f0490f942e626a1aad64b3b91ba7960122ea621124db005be3587d90ead. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SEVHN2300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f7ffc91ee2af5ec88c43d69ca7443ab07525fbaee60c8e44f8e46e2b76271e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEVHN2300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedcd663eace2d70d0df556262f32b57f2d4e4cc4c5e777611610052afb5fe0c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:24:40Z), 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/SEVHN2300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c25c8bd7dd5bb3eaa0739f00f3864bc2d8a93577032a73aae9ca8d7b11376c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEVHN2300411.
Barnplaneten - Upp och hoppa, dansa och lek - Barnmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9149bed1bd3866c9822738c5388c773010409663cf647c0c0dc20710fee451f. 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/SEVGT1500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3e6ac88e4c1ead81a60a471f2371b96d602f6e4aa07c298539d7b627192c9. 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/SEVHN1100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d6373983d7590099cf3483703d5d242a00c10e1c6ecc2d28e0b0451c34e69. 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/SEVHN1100102.