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 0x3e86dc38c3d119d1d70992b9729afaad37d0e8e894a98cdaf560bff5554d0457. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a852ed04-9d3c-4276-bdeb-c3fcd3313160.json and https://artists.proofprofile.net/proofs/artist/a852ed04-9d3c-4276-bdeb-c3fcd3313160.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 0xcd371c4648182fdc45123f5c98d725d00117f38e59d30e6298442f96ec121ae4. 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/NO44B2402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0dc3096fff4450c79f04341048ec672872430069b11d224929dfcb9874d9f1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NO44B2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3f0c7493a4356bfabb435b5b751f37a513bf8306ccb9e62168b6e0501c9997. 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/NO44B2402030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a09ad7dc1169a88e18c448c50f61cb3089cb44dd62fd95bd997c69879c940. 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/NO44B2402040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185011651b09f6fac5fad4b788f031e138c47866c68de3f7730c2e22d73dfab. 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/QZNWS2254800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec81f438e65451a3df10d4a620d92291b7154e7ae05f77c412d875476109c2. 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/QZNWS2254802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902aac7affad11c0c01a1eae8b9a2e6873a93802ce197aa5993b6cf99ac6208c. 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/QZNWS2254804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaea3425dc4f952314718568e6a7c8bf9911dd20327417d51fff044e5325bc16. 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/QZNWS2254805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b512b3384ee2ac1602074ae3d73790b8bf652924eee2b28acd6c2779406734b. 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/QZNWS2254806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0dc3096fff4450c79f04341048ec672872430069b11d224929dfcb9874d9f1. 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/NO44B2401010.
Sunniva (Bit av deg) [feat. Lars Bond & Moe3]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232be8a5e570d6b038c84f6a6537a75aaa64c11cf73eadc4cc84a393271c08a. 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/NO44B2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4259cf664761e8b730e91ff29c8d55602757db9410062f61c74c68cc16f2ad5e. 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/QZHN42350142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb468a080dd71320dec01aba0cf01da7eae908bf216158170cf4ca13d063c217e. 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/NO44B2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d1cb6521b5c8c8af2bb050427bd967fb43d5b195359e9f540ff37ad986191. 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/NO44B2301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892df95c11bf6e0d3be75a1b672083d63f39c7a4990cb51aeb8352f589d336c6. 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/NO44B2301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232be8a5e570d6b038c84f6a6537a75aaa64c11cf73eadc4cc84a393271c08a. 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/NO44B2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae01edfa04dba0f5a8007ac0aa344846cb03be25267e486291f71227f0685b5. 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/NO44B2301050.