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 0xd8cd1b55f643b1aa3a0989d7346df17a3ac6544d085abe7d3d77218b999aad63. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2217e7ad-d0bd-43c4-82ee-b895afe56d95.json and https://artists.proofprofile.net/proofs/artist/2217e7ad-d0bd-43c4-82ee-b895afe56d95.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 0x751e148c9d816324bc063a44794628b00c7199efbfc63abd35a6051c988e3cf9. 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/QMAAK2015330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3297f89e195b726883577945df9eba9313af73c400923069277fe68bf07f7ffb. 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/QMAAK2015332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea50a5fe15b08f1242a7eb239c92bd8e6df009f9e43d778e46060c1c7a43343. 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/QMAAK2015303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197b40c2d71e602d52dec932a09e999fcca0a9f415308e9248f99ae937ed365b. 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/QMAAK2015333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e0ecb44dddd27228bf7898bea8d01180360b76c1baf6eda819d88dbb6bc3ec. 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/QMAAK2015305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b36c73f11f5c924ab125bb038485751f06f94f7d0371935314c72f3e147213f. 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/QMAAK2015306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9094e74d28ea74c07f012a98ef4cb7cfc70bbc4af3b7866aa34cbe686cfa8de8. 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/QMAAK2015336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725dab6d14f04080146cdc4748b189eafc03870ceac9d5ff94bb24cf63edd53f. 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/QMAAK2015337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ba60b945267729fefb1ad91d37331bfae3ca69d3f15632a1e3eab1ab9ffcc1. 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/QMAAK2015308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a71f70c997075689d45994575ae8933a26c7cafd1d1682e1e06b7b0c83e19. 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/QMAAK2015339.