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 0x2446548cb2ae4934c3167747b3ec8832a6817806838af2b0fb6c4dd19caf94ba. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c36349dc-d169-4b5f-a425-43b07428b7c9.json and https://artists.proofprofile.net/proofs/artist/c36349dc-d169-4b5f-a425-43b07428b7c9.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 0xd7a7230e97ea02f6c1efa44188aaa81ad4ddd9501f98df415bb2e1f69da9cb66. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/PLM402209002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77353b77ef3b4c28863847dbcf91c2f438facdb7557705d66f81fb63af71ef1a. 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/PLM402209006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0554106f10712fb9e8f2d09c93681cd1df7ea134a3e8e39b2789bdbd7709b2. 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/PLM402209001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefa9ea860790daf94f98a6a59d1c5adaa84d056507f13924a6078f54f317685. 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/PLM402209007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb036dd50d12207bb68a2ab8076ef6177a2d389fbac497f24f1f62b6cd508018. 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/PLM402209008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e185e9b66e99d01e5a6914def8333cded680d08d6ba4225aa4761c57214584. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PLM402209009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517dff55ae83a57c899c4966349e5bb8fe02f4333494879a1bb67c3a139536a4. 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/PLM402209003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a7230e97ea02f6c1efa44188aaa81ad4ddd9501f98df415bb2e1f69da9cb66. 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/PLM402209002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd4ce7309ecc8dca37e1e746f5341e4704e37648d98858b28147742c568f9e2. 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/PLM402209004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480d2f80a769b805ef5187afc3b8db956241f2ec2922718f2269015f67f0285. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLM402209012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7437f748d153d8c829661220eaf82b496d55dff7f4f0d79692b949ab7d440d5e. 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/PLM402209013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181a3fa1b92157c8371933298264104abb391d18a6f84fa9e0a31eb6762a724a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLM402209014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63f9986ca712c2f1cbaea91ce0cf506af81546a53f5adfe54ad4b15dc5c6452. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PLM402209015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a73133983bebe9b7f848db3ca99e8092ab05eb3f6204ebedfa5c860c3cbb73. 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/PLM402000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3370b34d9c0a672a09dfc7d847baf46c7112db2c0c472abac3e73e93a53b1e. 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/PLM402000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c255926b73f7fe201bebc30ebfdecea356e33e7de760ce094524b880f18da13. 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/PLM402000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ea86050057cd609065a3de6599d94fe0e11d1682ca564021600df7c490fdb. 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/PLM402000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b45143c904728f7ce85ed31d8b501ee3c95d8053cdb6920f074c3c3517bff4. 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/PLM402000305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35af492b61d11bee8f41f03ffbdbe07e94091e7d0e0eb9e15f6e185b632eb6d3. 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/PLM402000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c689e9bb8e96921d982bf366b2610676b19dbf7a5ad80b0b73a2aa8881979d. 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/PLM402000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ca68e638e6486263212083642cfeea708030270e59217c7c8f8f93da6268b. 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/PLM402000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56be0cb73ee0ee6f75e8e402a50ecec6af096b18c877a7e5fd1da340a2601a7e. 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/PLM402000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032a07efcad3bb1517560a81cbfcc6612c55f40ff9b41572fca446494ccb57f2. 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/PLM402000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95c73076d005abbda043193121fe7c350a7224fa9e16dea1025952e0cd6ae6b. 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/PLM402000315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd4ce7309ecc8dca37e1e746f5341e4704e37648d98858b28147742c568f9e2. 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/PLM402209004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0554106f10712fb9e8f2d09c93681cd1df7ea134a3e8e39b2789bdbd7709b2. 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/PLM402209001.