Karl Erik Jakob Samuelsson (born 19 February 1969), known as Jakob Samuel, is a Swedish singer. He was the lead singer for the rock band The Poodles until they disbanded in 2018. In 2011, he competed
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 0xd94f269ca9e7849960c5d30a7f74b7b44c241e43ab2f71867fe7c88f656cd4bb. 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/23b676fd-d17d-4512-9afa-07012cca4da6.json and https://artists.proofprofile.net/proofs/artist/23b676fd-d17d-4512-9afa-07012cca4da6.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 0x8562c1f9b5de32f1a347ac8c8dab4931e1e96d11eee10944e02eee6d54cd3bde. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SEWLR2100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e9e6e9bceb8711f80eeb3002b72850746c96f3e6611f329ba5cd90a475b341. 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/SEWLR2013701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd9841a6c979ca1d2b0f35d718b22d3a3b3e0a749ad92b02261203affd93e0b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:12Z), 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/SE5XG2350201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f25eb6271aad93a97e71915229e801cdb8f0c54e3e8113866348def02fcc973. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6UB2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5d0abacb3f858d75a1b6661709a4adfd4813d01d227c27e1c4ccadcaca05e7. 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/ITG272300316.