Helge Lien (born 23 April 1975) is a Norwegian jazz pianist, composer and band leader. He has in recent years also developed a passion for photography and digital processing of images and has passion
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 0xecace1d05d221d2e9d6da93f6cd0c13c2687c14c10d4927aec9790b3c08dbe15. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55f8edf8-a3a5-44fa-ae27-9b96c1054100.json and https://artists.proofprofile.net/proofs/artist/55f8edf8-a3a5-44fa-ae27-9b96c1054100.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Memnon Sound Portraits of Ibsen Characters
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 0x53bb3c3688e7e1a2ee9cc58b608ad2be6e225db03cf6ad641e3e058c842240f0. 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/DEQ751800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd19990e1c5bb7136313b95de189cad652a517fba9958af2720617f5ce8fb855. 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/DEQ751800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86155eca28a09ec96c2406408bc825a2bb74dcd02e6bcb9287d6240e7a6baf0b. 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/DEQ751800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4062d2e1c434c024f071229c8c38657990868e1ad8946e56fdd964322caf2711. 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/DEQ751800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b01a8ba2a0252461d4555a93525d759c3a079db3ece095255f3d40265ec13cb. 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/DEQ751800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69eb77de22cfb9850ad14f4b48d5564ed02eb2bf38b86a166b6026237c18379. 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/DEQ751800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13fb002372569d1ed099f11c53c7e313d685cb3c723c46a393b70b4019ee7fa. 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/DEQ751800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390e085f2a2de08a8a8fe1f19101099617fcfc7f6cb98e85f6695cf7f183d143. 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/DEQ751800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b78bdf942c0d5b0531ae5bf1eaa07ca78548e2fc14bd27b1b5f5a37013ba440. 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/DEQ751800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd705a49d26769c89a4c1e346c4165948cb77d092ac0d0995b7676007cea52d5a. 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/DEQ751800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490c579813b344707144082d5b4a3f10a7342102c0cfe05bdfe6a72d2778aba5. 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/DEQ751800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b677610b64ba7526609b986f9a7de0d182e13544495fe9ba723894271daaa8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEQ751800081.
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 0x03ac5e4a2917e2d843eaee0dc20b70c381766d38e23f7a885a865af0f66d6d1d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEQ751800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8ed769c4470b084771d5f7abb47595c2eb7aa80f45be20cd6f49ec752c3a7. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEQ751800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd10f406f283cd22c5683d06c86c0a9b660a8093f148ca38a6603d728b91e14. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEQ751800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79841169881f3260c278a3e5948be4b9c3261bcb787b95ae02e9f5758f88a0ca. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEQ751800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33654481282568fdfb1a053515353df9393e697f81f43b41c2f65b30a69396ed. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEQ751800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1473e49eea9550344cd795c93e846f1404d4494237b8f1a6da005e7a1bd6ca38. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEQ751800111.