Christian Brøns Petersen (born 1977) is a Danish singer. In 2001, Christian took part in the first season of TV Danmark's reality television series Big Brother,MX.dk: Husker du Christian fra Big Brot
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 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 0xf4a3f13dd92a151ea1b8c83547660df55e04ce08ad6a35bec473f1998a7e3a98. 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/bb1c601d-e11f-4617-8e41-556fe8188c45.json and https://artists.proofprofile.net/proofs/artist/bb1c601d-e11f-4617-8e41-556fe8188c45.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 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 0xe76b95be1f5a161e786530e8480075cf27315354155925fd0ef08b907cb143c2. 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/DKK262200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13728e5410e221b91320b2c48a60ec537ff9357005982424a2f42cd21e777f13. 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/DKK262000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d643a4b19319bbac07df6ca17c1d0b7d924f6e0dbb5e66bf6b0eedd238ca1e0. 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/DK92A6026701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2443811617fa4a715f4c0652bff446311122108edd07b02b6d62f9eab82035a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DK92A6026702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4316880d5e5f983f866b8198646f0db6d061f190577cfc08381a2acf8b32086a. 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/DK92A6026703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91db6d44e4dfb114e28da7447525a456ebb3fa46e29daab06c80afb5b105067. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DK92A6026704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a5273814f01cad22f3e8efa3970e055e27ed937590d1f4334ab7f9875ae08. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DK92A6026705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcd7043b2e33579c94f1990c20be2067db71bbc4f72e54e2c1349cb7ef82a3c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DK92A6026706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a179f977d68b1a96e6aaae4deb34fcabaeaca0b9efa3a3819e124cda9b1625. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DK92A6026707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51606c7ce2f8cded6d7629126108966f899d09522e69068bcf0370407d393d9. 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/DK92A6026708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b2cde4d45f59aa5a74fc262cefdacdb9fbc8ed36ee81a52d39e14e10b0279a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DK92A6026710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c3b675244cdcb9168713e707a02a6e0cb85a78d8b695e42bada7feb6f446ef. 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/DKFJ30600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c459e7b8c05e7f1b3f968ac95470076e90dd79e41e66a7acd4740cf9955b02. 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/DKFJ30600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9816a937cfd078e6180e570c0eb77e459a739c9ef1c32d82528c5fb9a0b7ed9. 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/DKFJ30600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75313d0aa0956673a47ba000cf58ded88f5e4268b7f8a3b1e08cb021453087c1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DKFJ30600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce26cd875b4d981525f83c5e01650f8ac46180cfe5da3613329f759df237c346. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DKFJ30600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef6fc54faab1d20738ae6d5be6b163e45d511f221bab4c172fbf2f36b9e7da. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DKFJ30600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7db14f2c2a98f98efd817e13f059303e259ed8da0e20e23644522408faf713. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE3SA1703301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b25463f9d6dee59a21022de24e3839e5129b18627cfd5f0688b8b0a3afd33f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE3SA1703302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ffca26c5d19135215bd134b2c9510b76b9129457e5df6d8cc9bfa7683094ab. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/SE3SA1703303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285544b8de320931af9401c7413d928fb11cd26f08733d2f07d4da28487b12f6. 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/SE3SA1703304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ff3d8bb26970557283037fcfd6b1d792094ee9906354ae991065d72a36a3f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3SA1703305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8345fc377b37cc0b4909113f1dd59c1107fcea93d1ff139db26bd346b5b4879a. 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/SE3SA1703306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa78364019557a9580fd8df5cef598df8f9570846d1fb7199a7b461749f1b25. 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/SE3SA1703307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2b7e1e46d0c4c69d235360a3d1f41763a1096f7c826cf327bec638f38aab36. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/SE3SA1703308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa912c8fbf185a1c4a19666457667111256d0c19b31bf4527bca89949215c14dc. 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/SE3SA1703309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a37b55bebf69577d2f9f25bac7ef2a655cf9097300f042ff03c60d683970eef. 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/SE3SA1703310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f385013da2b6c3b038c69fa176b40118d575694e72ecbf68fc2a5bcb8361166. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE3SA1703311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ed8cda80b7c4184abe0e69e94b04c8b03553ce7f79036bf1aef2d4a26363b0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SE3SA1703312.