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 0xafdb1a51fd5c8204ffc212e6d7cf17ca5d8b8a275627dbc656b0c7368308c066. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a88d7e4c-1c70-465a-9238-0f3f5e243882.json and https://artists.proofprofile.net/proofs/artist/a88d7e4c-1c70-465a-9238-0f3f5e243882.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 0x6402ba667edfdb6e389f61c11c6e959f1e4fcaf4019b4df509afeceb873ef4a8. 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/ARQIW2213896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ab17685e50bbb4652594f45b476e3e09a04f720c31f71f833bd35baccb73b. 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/QZGLS2284517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83abd4f7c48fb50bedf50fe194dcb908e5e77cc9b64d06f946c3a12ebb071ed6. 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/QZNJY2021831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa917d5c08eef6a39354eb069f1e02ddc17f5025f07aac760105326498635380a. 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/ARIXB2311161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1718b47871b427b3959713db058ba7edb6181691bbbaeda3ec9e79ebb17aeeef. 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/ARIXB2311165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74a2c4699298ea7e36c70131c5821311fcaf4f2cc5f4504047630a29b8d7d4d. 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/ARIXB2311166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f03a2400dfc2314b3836f59fc58e6f21be6d38e1ea18babf84e1a2d950ba1b. 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/ARIXB2311167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e99f1d7b0be769f2aaeea606982d0a46dcf544cfd0b16147cd3b4451d6fb674. 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/ARIXB2311169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8817c8da2188a3b815c6f2a28863d200753e58ea4657def3900ddb982b338dec. 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/GBLFP2438736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef63a2a225cc28bb07d9e3c1a53a10722ee33cbf24158965df1638c456a9b10. 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/GBLFP2438737.