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 0x26cee8f1b0bb3f5b24e217ee70bd9ccaf5da5fd394a2659a411cd4438d89eb4d. 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/e8755e20-42f7-48a9-a13c-b852a39acfa5.json and https://artists.proofprofile.net/proofs/artist/e8755e20-42f7-48a9-a13c-b852a39acfa5.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 0x527b82218c908094afb4e833e746f30b33c5be614b4c452518777cafbebf8114. 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/QZTAS2419531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6081689c9f21d0e8a3fbf2e9dfe9916a4f8313794c07eccf1969039aa2154a1c. 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/QZMEN2461082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5ac841b7dec3a91054d2618b547606840441b260c4756608ac1a9677cc6d41. 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/QZK6M2485602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc82b7f2b3105d987250d84a8390121dd7c2600e9d88a6cc827b5aa8a96041a7. 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/QZHN82419604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbbe84f14f25337fd4b8f8736cd47b0fc6a025192e848a75ac32fecd3eba11b. 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/QZDA62443408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bda5c967df6e8cc5bc340cc161d42ef7dff40a2f094ab444f4aa25a695ee45e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFM2336284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50013460c1903f39577e7ead5f50f0b40ac9e00dcaed1974238497811f8f3e0. 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/QZTB92314555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4711a8fa7081792566c24795ae84bf6297f86f2b658f732841f694416e8de750. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWR2370581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02436c817128a853555a09744256e2cca271fe4008c8994fc0256e4b36ca67e. 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/QZK6H2360320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21505d278b857e19d89faf508364c7da74a6f7cd263b23e6f16fd54662886bd. 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/QZHN52375051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd5484afd35583f925dec0cae941c320413bcabef90cdb6e5a114782939653. 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/QZFYX2366465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfed53e80802fc5da122a4cef03ed35aa53245a0ebc94a94cf62a354c674b8e. 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/QZTAX2257067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a54b5185d95d997799fbe9ba9a557e8d8c46aaef327972fececb18342cfa27. 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/QZRP42274694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a7d903cad10ed2f32cf31876ab2f0614d419d218b621c9ef9c49a28d24aa10. 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/QZNWW2245723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23e3db6f7ad9d93e19bdf4e12925046d901045895b6d0002ad306b1d7c35527. 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/QZMEN2267727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae3c8416511efc6fb956ab3cb78f91969302f8fecf72257904a221c2777db18. 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/QZMEN2263960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7524a21caaef3287c2f04080a9fca53f8a639f9963f660d833e11423d135d329. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6L2286575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad9f582719fe55c931400344edc875b9585579dc188336397dcafa786293fd. 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/QZK6P2261677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe202716fa072a8944c74d5cfcbe2e54b707dd35df04154686238a1f5f963797a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES62232615.