Karl Erik "Bullen" Berglund (30 June 1887 – 27 April 1963) was a Swedish actor, director and writer. Berglund was one of Sweden's most popular male actors in Swedish films from the 1930s to the 1950s.
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 0x59e3e2b57d5cf035849b6f7363aec2d92b93fe82918c7e41aff82d36f58bf787. 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/742ec059-04b8-4633-92b9-823bffe93645.json and https://artists.proofprofile.net/proofs/artist/742ec059-04b8-4633-92b9-823bffe93645.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 0x2a199ec259fe5d17cdabd0ff907a38524c0df44dc0616e97fc3edbd6f73f358d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USX9P0766743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd89b82edb9640d7ee2ab42443a1758bccab02dc57e0c456a8ca98c1a26f74e6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USX9P0766744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7da001413034ab5d15bcc021ba8edc81ce606296825f12eb0be32af0d76f69. 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/USX9P0766745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c5470872c86410ce401f9ea67477cca10d809ab5ed2c64274723ddafb09023. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USX9P0766746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e76249930f2f367435534aa7232688a7b7cc06c97101ead431587ba5ecba8f. 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/USX9P0766796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581438b29f2229f4284a2cf07842290c6e1482a64b477ba5a5b6f552369bbbc1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:03Z), 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/USX9P0766899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d18e4f68b6727e3412dbe62300e0160ea92f5853c0229a6ed00d51881704d. 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/USX9P0766820.
天使療癒花園 1:召喚天使 Angel Healing Music I:Angel Flight
天使療癒花園 4:天使療癒 Angel Healing Music IV:Angel Healing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23471335374d818100774d709901dbc12b04c4c8729a611df7993f9858fc63. 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/BRARP0800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0a7ce576b5ad928d9b14d4731e74b77fadbdee6101da1ff28b81f46b1bc709. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRARP0800077.
The Jungle Book 2 Original Soundtrack (Swedish Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3472959106198a439014c43862ea89ebcfd557c52f7f74b768e0b9a335f98b. 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/USWD10526120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b76ec7a13e074630ec7284be38d6dbe3dba43b7acf6e7085a516eeab1b215. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/NLA930800138.
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