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 0x08f63768730d98255fc000c33a56dddbf26592b8fb1a36179e4ed7aef17382a9. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49a60cf0-908a-46e3-95f1-24d58c3532f3.json and https://artists.proofprofile.net/proofs/artist/49a60cf0-908a-46e3-95f1-24d58c3532f3.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 0x9616c8a78439e2c28917cadfa422ed29c56c89311b4128fb6a89569c3ddcdf3e. 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/IL1029704057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597f002ccfdbc0ffdbc8898b708001951c26d9fb3704fdb82d0653c4b7e13bd3. 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/IL1029704058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafc974c5173fbf02318935acd5ed832971ad5d6fc3f1d6f15ef1dbe37a1df44. 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/IL1029704059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b01d68d1978fd8e032af5b2e8d79d1281a5c4db92ef678b258882a7a4bb0aae. 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/IL1029704060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26a3d1b13e5892f6206497f1418b172fd50cc54751ffd4166133082ddc075be. 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/IL1029704061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e436197e994f45cbfca4be818ef16b085173d0f6ade45864e7d9305b4621d. 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/IL1029704062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efba98229625656df68da592433ceadfedeb8a3f0f054fe0c9b9c8daaa0d5ca. 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/IL1029704063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf196e8f981081d9bc7ea0d0cc0ee6e53d2abbbe867c5f9827f714434e9ffe4f. 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/IL1029704064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a03cd6f2e37bda761ba20560494ac077ab9ac902b4289811f3d63f28ab651fe. 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/IL1029704065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1aca6b5183f56803d3de26716cc0635f1a85be73415a5a570224e50175e32b. 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/IL1029704066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4820036b6bc62e62e6d30c9ba5ad380d028632358be4abd803f65f0ba934284. 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/IL1029704067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a25c5a6868f4e81ff8f4ffc51817cab1da3c9739c9bf7cae2bf14a4d164dd3. 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/IL1029704068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faf4281fd3861043d7e065830886e98297fcc575e9e15091465d3bc45f80468. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL1029704069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325bedfe96e1dbbb01378eb72ed359950576fd832ae5f883182d66a146880fe8. 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/IL1029704070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395f26a787f8fa186a4612acd3730af88ad431af4c0f638802f175480db4b71d. 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/IL1029704071.