Karl Seglem (born 8 July 1961) is a Norwegian Jazz musician (saxophone and bukkehorn), composer and producer, known from a series of combined jazz and traditional music releases, as well as leading hi
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 0x012599d0a886153dad9f8c9a0e1710c681a88c3c94108b59cc98e35b381626e4. 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/6f6c7818-809e-446a-9e9e-fea32e451191.json and https://artists.proofprofile.net/proofs/artist/6f6c7818-809e-446a-9e9e-fea32e451191.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 0xb31989122ecd359b8e2d16cbbbd1c4380919c8dbb4cbc4a9a080392bcff58cdb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOLCA6146050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c1e5ee6fedec6699e977cd15e8debc0ea820512ae6216a64b4cfdf7e26890b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOLCA1982020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf65b04ea06abdf958655142505d8d24fd1bb5920f333a3f823db7114b5da9b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQ751000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e0d42456a99a429e5e11a804d947c5f3cc191cb0148ab82d3638adc91c2709. 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/NOLCA0455010.
Bestefarslåtten - (etter Sjur Hesjevoll, Jostedalen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e05c7db93dc8933cc8a7cb5c10af2ff125a5bc565937d3d1a1083d08587b572. 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/NOLCA9205150.
Jorda har eit hjarte (The Earth has a Heart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9f80efc1b5aa2dc75cb4efcf6576929c355381aa04a1a682dffb9f41d26af. 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/NOLCA6143010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c52915649486b5fe3e183a30341aefd06227513e5c5aec0553afe2cabcb469. 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/NOLCA6114080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7fc99d52aec28dfa92f8b62f073a7de7552df21bc3a3e731ce1bff4331995e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOLCA6106010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0234035913470c00eb8cb32a30dd2aa1d39ff20871621dae107f5e9ba79bcdd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOLCA6105010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277716239fefd422f73fb1e8d628be4bf1a59b782eedc42f48d3181204a7af9a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOLCA6161100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a59387d995bf0feed6ef43706aa9db27e5b4428c4f610a958d60dab3eb1c6a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOLCA6162020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2566c93c0b47a515088160edd951f9dac02bf6edc0f6d6a8194429520e3eb0d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NOLCA6162030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394386abea968618e0003736dee2cfabe5a660810d675ad076812ea31033d155. 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/NOLCA6161120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912c099bfe9c0ce441ef0c9d08acc2176a3574346c56c7aa4296e6b55e05c9e4. 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/NOLCA6181010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277716239fefd422f73fb1e8d628be4bf1a59b782eedc42f48d3181204a7af9a. 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/NOLCA6161100.