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 0x14898d9881ee9f08edb317a7e631bdd721a75bfec89c6492f97e72fa8cc9a897. 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/c442c307-fa80-41f6-bcb1-9020d3c0c3c5.json and https://artists.proofprofile.net/proofs/artist/c442c307-fa80-41f6-bcb1-9020d3c0c3c5.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 0x90ad671b35c7a56a08b0e8c13ea1e742f637dcce7687f98a74fb94395e698648. 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/MYA112200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fedd615fc8b5fa9402e7a9105edc685bdc1e290bc7567879f8a08c3961ee9c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/MYBK11900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd150a87418b73a31a2d556d80bfbba3970de16ef1b6f409797296c7934742a4a. 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/QZNJX2381167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb69d07290e6e21237b9bc31626a3ba6dc420c7b53fc8bdfd95ac373eb8b163. 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/QZGLM2399599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62897a1a7b0dcdb42151b6d4e5a4dda0f373da0d0bd1a4082d033bed62da1eb. 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/US7VG2377040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a203a3c18068a0e1256f8da63db68c3278b3b38d146d7c85b8501aa06d68b6. 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/US7VG2350027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a59564881862aa8728eecc6ca2dd9dd89617f557d2c37cf4f1b16c16661c93. 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/QZNJZ2231965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96cd95b6bc83bd25a8c74b0b581a2e85b2211d5ad680e8246cfac9cf5b55a66. 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/QM24S2200568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934c6078dd64651fda0e8cf24278630d8a078176e95b67b773a1a82a4829e1ea. 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/QM24S2106870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc85d146097a72c5eb391cde596d97bc6a9ca9ae6c04f4ed42bdbda2395d3d5. 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/QM24S2101951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d6e9c228cb34c679cc1a3c319cd2b9e18bee1d4f09c1a9d280b365f02c8827. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ93L2046375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9012142d645b665a6a9a9d2ad35caf7a698d16638fefea497f2fe3d4e23a0eae. 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/QZ93L2046376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efaa39324a4914ad9de39fce1e48cc58ce33927944eeea8a19430ed7d90dd96. 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/QZ93L2022891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908515aa5c3b09b5b3bbd07a9eae85ba18c7d27cc55498efad1efd2173ea773d. 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/QZ93L2013906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efaa39324a4914ad9de39fce1e48cc58ce33927944eeea8a19430ed7d90dd96. 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/QZ93L2022891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfc7f2ba97b7e379002d8a324ad51fa19def4f30b6b40153569424988c7a754. 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/QM24S1922721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb5aacd0d7b14a59474a89a25e8f7feb963308a05532a7f597ae2c190cb55a9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM24S1836964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e2ccc59347aa7201672da6704a09f2ebf078129abc446cd1b1e2dc486467e9. 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/QZAPG1721277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7944288d0ba12c86f191437fa1f1faa3681255feaedfc64e4839be0138961f3f. 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/QZAPG1721278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187c8561ee63c7f3a7703935aacdf9f41950aa20b54e5d580c730ac0a8d47b0. 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/QZ8LD1743911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd932317184fa3dd02f5d60168463efa26011e7c63389d848a27cd8468a77d. 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/QZAPG1721279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187c8561ee63c7f3a7703935aacdf9f41950aa20b54e5d580c730ac0a8d47b0. 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/QZ8LD1743911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fedd615fc8b5fa9402e7a9105edc685bdc1e290bc7567879f8a08c3961ee9c. 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/MYBK11900132.