Christian Ingebrigtsen (born 25 January 1977) is a Norwegian singer-songwriter and musician. He is a member of the pop group A1. Biography Ingebrigtsen was born in Oslo, Norway, into a musical family
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 0x5c823d85fd002d0579800832ef2db7bb7fd86aa0b04f9b11ab0f9dc91eeec3be. 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/4c88851a-2970-4fee-a345-3f1fa878606c.json and https://artists.proofprofile.net/proofs/artist/4c88851a-2970-4fee-a345-3f1fa878606c.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 0x7a6beb51b8df07ee6e7a18b9c8e5c00fff9f9e1ac887cced2964e06c23f7f544. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NOAMM0300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc0d500366a6f05037f7d35a6eb595e2452c2ac0da86c7dd5f8d6b5862d0f0. 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/NOAMM0300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d418d432aab83eb6d50caa800be0ed03062d6ec9570d719683739c8d64983. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:28:06Z), 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/NOAMM0300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb870dcbe0a00d996bf42a1669a40d33f320a4de6651d8aef54b7912ef5bf0496. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:39:59Z), 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/NOAMM0300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd9aa1ae14c96bb5cfb4b59827fdf359308461d8a5a3996b2104eea6d1e9b3d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NOAMM0300949.
Paint Christmas White/Frelsesarmeens Juleplate
Paint Christmas White (Frelsesarmeens Juleplate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcd73ae96049ef6278fb85d2f48093e08cb90fe65849b6265acfa561e5ee323. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NO2WH1504010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9692e4d1a8cfd2a9200b912202b77824eaa9942975d41817889cd3dbf16fa04c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NO2WH1701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436dd092cbac6c1fcd9148122c3714b0a20acc8975ab91a347bb597b60b5ee0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NO2WH1904010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7d7523e944b165098f1974fc53552257af9f7e795cf679871fca1567718c16. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/NO2WH1601020.
Wonder of the World (David Thulin Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd98522448a0b38375a2e1c7cfa1438a85546c8d96283298c02307cd81c4a64. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:56Z), 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/NO2WH2304020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c252d1cde1b0b279c73e4f10be0ec60afac2b364cbc516f97f0659b7c8213c. 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/USWD10524266.
Vis Veien Ut (Tema Fra Min Bror Bjørnen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b273e7cb9a9913f6e271f6e92e0c940dd00ec2e0bbc7585c882ceedf0af888. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD10524267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b9822296781e973291b60adc41e219f1a91c848a5be0158d3ab6125badc54. 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/USWD10524268.
Nå ser jeg lys - Fra "To på rømmen - et hårreisende eventyr"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab453cdb30d3f91187bcf7c79f2d203d09892fa8fda3bda736f2e898afbfc84. 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/USWD12214188.