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 0x01142ba76307bea15ef6ef1e69260ad9bdf2cbfcc859af30e22e5cc16ab21c2e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64312bcd-f43b-495c-9c51-09a91718b80d.json and https://artists.proofprofile.net/proofs/artist/64312bcd-f43b-495c-9c51-09a91718b80d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yo Poeta Decadente (Fantasia del Cante Jondo - Tercer Movimiento - Zambra)
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 0x90bbebd954270f00abd64aaa6ba463cf23e459eb6af9590dbeb1bbfe29470af4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6MZ2090120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13750870099deb3bb0252ca6c03ff8c9975f765f39ad18a47c87d276185727c1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:12Z), 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/QM6MZ2090121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d9189066c3b88754237a144c133d9cdd3a9df0b0bb358e4eeb72e993b28ddb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2090122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5a50be078ba57737fd09bc111f36db5e069b8e815f8500bf6973198575b092. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM6MZ2090123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc572b7b769841bb566a46b2951135a5b4c1013714dd2249aa3305004dd280b. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QM6MZ2090124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f43c42c8264395080e7d592ceb5e72092c818e541a4ec1525a957f59ca669. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6MZ2090125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d56ff30280e2931f5d74ef2c520b1a36f7a5c57a44404f024364c2ef2e47d3a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM6MZ2090126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aa1b19176cc7535f0bcb97cd25f6efe4a93d2cd44f0c492f728e2f3db5bcba. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM6MZ2090127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacace5e7a7242471fcbf01fee09cd15745fc68596703e859ee2adfe5c9a88fdb. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:12Z), 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/QM6MZ2090128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e704f626c103e6ded7f20e462aeb3443ebc15711d537b670a3bc2809ae796c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6MZ2090129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe381265d01dd49eeda0239cea6077cb59a9e54110dcf370d52925ec5e87ba538. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2090140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0110b2c09258cf87f7ec23db732d6e8ec0e45896b099a4df6f70ec4b76d53. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2090143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db6eff22efa422357a1cb3813313f21f7b741ff2e03b720dddbba80f1fd3093. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/QM6MZ2090145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5806282e6e86270c1d168f03944f748f21536cb1ecb913f2898ac888cf9a47. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES79A1371001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b6a7ae02865165a2efed22787d93bb49f0d803bcc2da93532e1b37f85435bb. 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/ES79A1371002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2e4e4012e776e5b2397466d2f14d46feca7398d5800acf2edab15de1d624ae. 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/ES79A1371004.