Hilde Heltberg (30 September 1959 – 4 September 2011) was a Norwegian singer, guitarist and songwriter, born in Oslo, Norway. Career Heltberg started her career in the late 70s when she entered a tal
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 0xac8106511c66acc6dc09a0d9b8907591fef281bfa128a5542896ab1aafa846eb. Chain 2 (Bitcoin): anchored in block 953820 (2026-06-15T18:35:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffed9db2-479b-48ca-a907-a9dcfebc1b1f.json and https://artists.proofprofile.net/proofs/artist/ffed9db2-479b-48ca-a907-a9dcfebc1b1f.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 0x91c2752a0583ebbdb1dd5c87d6c6c31c887ffe4618671c2c918eddab857fbf46. 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/NOFCU8306020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cb3cbcf242c4e65ac7edd774bf29f43a94f7ff5908f4ccabcb335c034fc77f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:09:32Z), 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/NOFCT8206010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39c3c72e19ef2ece11b20fcec9f7c1aa9bf4b9c6abe9466c0fe4aa7377b669. 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/NOPLA9703030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6b201cf0a4f45e46521d51ca515553deaa0072f34832d26ba19c34809b3742. 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/NOPLA9703050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f42d7568410783cd6f67ea6fcf9261ab79039021db71d8d948ebb764ccae6. 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/NOPLA9703060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c421bbb11112e1950920333de6e791c3781f2aaeb9536745604f200e5e1233. 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/NOPLA9703080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840121b9b5ec4cd9548b10b61fc266934291c01e8d9f35730732ada84ba8eddb. 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/NOPLA9703120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c634616e56ccef4dcf24a220a20c93ac75b38be4f01f5f38a6e15697a5488a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NOCCT0928050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a65f7a61ceb45c87107d4ad80deaaf19e284858d9b7648b22b746baa7bb3cc. 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/NOCCT0928090.
Elske det umulige (En samling med de beste sangene)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6e5d721c25108338bdd4086d2df7bf3238db2e86c17afd1e86d5def018dea. 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/NOFPP9257090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2752a0583ebbdb1dd5c87d6c6c31c887ffe4618671c2c918eddab857fbf46. 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/NOFCU8306020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d7aa096f6b0b08b8d8eb9b4e3d4967e0f0b9e20c534088f8b3f73ee97a2cd2. 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/NOFCU1201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035583b23236235899201db1f31ebd13f7ff261235af3f2388fb60948abe0d6. 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/NOBNC0001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b4fb0f46472ef50ecb6031b3caac6b0191a48303f3f0bb46e478b5aa233da5. 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/NODEJ0101170.
En Hildringstime - 16 Artister Hedrer Erik Bye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b103fd0e7f1ec1b54ce9a24d052d3bbc356a0c49333ac4b77ac28f00f8ca323. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOFKF0511120.