1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x01f5ac7de8bab5dff487cf8a05f5dc7bdbccc91546d19add82d8c012d4393e77. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c28f1d0a-d787-484d-876f-ec902672d630.json and https://artists.proofprofile.net/proofs/artist/c28f1d0a-d787-484d-876f-ec902672d630.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 → block OTSBitcoinBlock must exist at that height 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 0x5eead3ff6bf4455f2c9f5e8e6b0b3d10e20b6684f414266c37530ea6a5210c99. 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/QMDA62142383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd067541f166435c3516c310d98adad8f52367ac86da2594343c41eedf7d9a75f. 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/QMDA62142385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3176d8bccdb780cd815fa0a75ad4b2631e607bb289e1131b73cad67a61ea70. 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/QMDA62142387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f6ed4a32f1cecf97b7f7a9875e77b03bc7aef0ccf3c101792ae84e7c94f8a6. 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/QMDA62142391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d750bfe1f46259d6874c4586aecaced54ad498168db04c9a731c652a03f35dd. 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/QMDA62142392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372a62ee7105fdec08e7012ddacfdd8d9e8737739215384f648f57a343d22ece. 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/QMDA62142393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2047dce0b9b71c7ccc545aa798822801986a436a674e2e16cdd33eefbdc58bab. 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/QMDA62142397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd9f764b9ba3d9972bb4cb5bee556c6296d831cb8caff7d2676673f84f9f11. 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/AUBEC1836425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f5f6515cdd1f8489d3d8b173d4c3978a08a4e5a2e33fcf6b85d78301e6df23. 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/AUBEC1836415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a4f03a02b7b72547c64034727c4f95c00c144f632d590b363a7e75a9f5186b. 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/AUBEC1836157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a5e4cf06edc32acbd7aaf5ca6be5cbe0c13edb0be5b0d15fced247dbf8ea44. 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/AUBEC1836166.