Carl Edvard Persson (17 January 1888 – 19 September 1957) was a celebrated Swedish actor, director and singer. He was born in Sankt Pauli parish, Malmö. During his lifetime, he was well-known in the e
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 0x12ab5024ceb9ac4a9bf98b9b08d91820aabf4afb842fb759cb969f4bceca92a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/117c4f91-5afb-4052-a04c-2343c26ca5a5.json and https://artists.proofprofile.net/proofs/artist/117c4f91-5afb-4052-a04c-2343c26ca5a5.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 0x46c104d74f5c12b76afa34ada37b4f8238cf16a8b5d8bd323bb222c29851e83a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEAMA3718050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698d572804a756282b6acec9dbc81e6af9d0616923dca0cb3c19542a9cde0fca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEAMA3818060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a46b7bb2e0f6bafb08a23c0a8f00f4bc9dbd8c61c7dc3288c38a3a3219961. 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/SEAMA4218090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a50493c6405c2a3ee0eee1817ec831fb59830dbfa4aedb5a0ed0097ab2f7355. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:45:37Z), 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/SEAMA0400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffb0aca9dfde7c0a37c2d08d5f523af2acb5ba6f20d84d989cc7fa6376147c5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEAMA4718120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2422c7d23068f658cf7d6109f7f91c321cf92dc92462cec4b11e7709bf083f65. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEAMA4218200.
Lite grann från ovan - 21 originalinspelningar från åren 1936-1948
Söder om landsvägen - 20 originalinspelningar från åren 1934-1942
Vi klarar oss nog ändå (From : ''Skanör-Falsterbo'')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03a03114450c38ee5100464a4462f700640a6bede3141894039a467cf7c48e1. 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/CA5KR1938139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877d973e7db1a7cbc8a8a7746df7b57f0a2979bbc7a7cd4506c43b962746c6e4. 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/SEAMA3918030.
Kalle på spången (From : ''Kalle på spången'')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394c22102cae18645c7e5764bf33d5cbd8725b015536789dd56a77c7f735e01f. 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/CA5KR1938140.
Jultoner från förr - Originalinspelningar från 30-, 40- och 50-talet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5b96bfe9df2052c896a6e08558b962d6d6319d75a02a2b72a2ff7fb0dfe88. 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/HKI190615243.
God Jul - Tomtebloss - Sprakande nostalgi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353bc5a3791e2ff79c4b78dadaaf2d00dce075d35fb4d084716d83d5ee9bccbb. 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/SEAMA3918010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7655f59a6eb53981653b54281a52ed2a89569c4acbcce0b0392c5707531e583. 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/SEAMA3918040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698d572804a756282b6acec9dbc81e6af9d0616923dca0cb3c19542a9cde0fca. 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/SEAMA3818060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922e7b498ea97bb255df91e896192a69b77e790c8c1afdd013bc63e313eb2631. 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/SEAMA3918170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e9e0bd5e474b9de998a1a346f793e05fa67024c94777316675215a1615bba. 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/SEVCE0700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb9434cffbcbd6b508fb57622ca30bc35c7ab7c4e09d73f54eedc7ffd1d9ae. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/SEVCE9801180.
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 0x1fb2da03d4353cfc4a7b90797d127251be02dd44cb7fd9d10c00f0309772e744. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEVCE0600113.
Schlagerkavalkaden 1 - Fram för svenska toner!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403c16d5ec79aacef1826f730ff6329654d3df71df2e98f7785309a5cc3acf10. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SEXCH1602112.