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 0xbc53c5c159188a32098f82e55b7fb84ecc38e5feadf0d3bd56d86044054ba517. 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/d6efd7df-3c3d-44b4-afc9-beb388885402.json and https://artists.proofprofile.net/proofs/artist/d6efd7df-3c3d-44b4-afc9-beb388885402.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 0x59e1fcdcb987b17928c5705570eefe4f258881b52021a0daaf07fb1046b1170b. 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/DEZ902400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604bff16be7a0ce791d35c46cf9491be70d0593c040f90897900d645a95c5680. 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/DEKF22200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2256f3a4a3e6bb8104011b780a14edd435046d129f44bfe1724f31250c70c. 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/DEKF22200911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736fc40c0fad6aefed8b1a5da2d047f8c57345b57996eacb45b72963c59a0ba2. 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/DEKF22200921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe785b9b7302cbfb42d9636cd6abe62c4d952bbc8e4c5d1fcbae625a9e57dad72. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEKF22200907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd730596a9f42fb06a8ac5c243f79d4d8d48030fe9ae80e9b3da5aaa1984f3309. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEKF22200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373bee35cb52542659ae06b0fc0c61df74bead28415717d8078e8a74beb910e2. 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/DEAR41989350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9993d3941d5b8c0fb61a9140d86fa104a69381962f1328f8ef5ad95a2c4ea851. 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/DEVY81700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743077738350874284553603c14c65ba2d1cbd19a621cfba4c700ffa1ed7a2d2. 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/DEVY81700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9af255cb22a079e548da50c48b3600f1d3336fd67b90019ede3a6fb28080be. 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/DEVY81700705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a98c36b57a8fc55fa8f54f5006d4367e24c7a118e68e8d55e317bf07cea1be. 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/QZHN61951167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604bff16be7a0ce791d35c46cf9491be70d0593c040f90897900d645a95c5680. 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/DEKF22200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abcdbe4fa7de0e42d68654192a15efe535e1699a096dc6cef1e00d58e8ae49e. 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/DEZ902400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e1fcdcb987b17928c5705570eefe4f258881b52021a0daaf07fb1046b1170b. 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/DEZ902400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b5ebb85842ef56623edc5402b6d136cabb3c9f677b814d64d4aec652b7167. 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/DEZ902400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a804498b27e5f45f7a3fac88e2d6ff61998b24bc126dea7c42b8c9228c5b685. 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/QZHN61955707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c42102f8ae0762557c8436a095bfa8c6c328411ef21520ac715bd897e2d1f. 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/CH6541956899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b9329163f2c1912fda64ffa6ea34d42d6edfbd19754683c411bc5734c0a964. 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/CH6541957367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b2541a4ba853386b748cedb1242d059d8f8a85da6dcd1819ba49b0cfc62d8. 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/DEDG62300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2630a3b5a86da35b81fb3b274c1568b3bcd633f13d5b45e6c91467d535e0dae6. 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/DEVY82000747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb192191df417af13657a8a062185154523355c32bad2e1996f28123153303. 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/DEVY82000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a94f2bd13f7f1f6c373ce2b45eb0928f7bb2af3344aa9de9a6d1ebd7663420. 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/DEVY82000672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700aafc06f0f89becf2e94d8e93063197175cfe65d0165bab8d21429d7c9dc99. 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/DEVY82000738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1881df7c8562d0956817e79ab194a50bdac5a8ba50d3787f11b4ff3e9076856. 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/DEVY82000743.