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 0xcad5e70718b1bea72ccb19b7c7583f4b326c7cdb860e6f8c6b2a5a84cdc4c246. 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/2b67cb12-2e7f-406b-a5f6-aeb2e299e827.json and https://artists.proofprofile.net/proofs/artist/2b67cb12-2e7f-406b-a5f6-aeb2e299e827.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 0x03628150761c6dc4d72a063f21f4603f18c5168948c5b10c1ad0eda019648022. 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/BK2242401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66af3bfbd427f6a2c47200fc47042bb623f4478e72d20b717e07c00e77d9cb1. 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/QZNJW2493986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d304f8739a2d258bb8cb68d7e766ccfb7ef7499e1687c0590f700b41b1c0989. 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/BC3PG2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc8e83de3b5339845c913b6827f5987e0b198bab7b9b7e34fc930ac4e7765f4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BC3PG2400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e13b7f21d87fdaa5d32ceaeb6c79a639cd60f2ad0c3256c31981dce7d885e84. 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/BC3PG2331379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda4b4bf75fc15fc208896c6c0658fc9e8ae49785b0cdc738d0985ef759293ad. 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/BC3PG2307232.
Acordou Mandraka, Mamando de Juliete - Slowed & Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f7d7b779416273a7c429b976c809cbfaa428834d9208c4ef16d97412f89065. 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/BC3PG2305495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9261cfef3b10e16b795f6e66e3e22dc27035b1e062f56bf05bd2b6459dd310. 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/BC3PG2303986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bba919a6289d3feff7a40399016b61e93faead699b261ba48ee3fdda992917. 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/BC3PG2304262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d56dbafa88617e8d593c622cc96405a7e5a5353dbef7b0f6b78e96ac61d5522. 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/BC3PG2303985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ef0786266662dba5f2ac3c10e742aad1de38c17b88d597dcccddb5fd0f9763. 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/BC3PG2303836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3845077628e5a7d815d8205b808c32f8cfd370902f108194b2f813dba2f570. 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/QZGLM2354039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec644e1cb7c086f32b6faddb747a7d3f57606413cdb77000d28d7ae6448a7ac7. 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/QZGLM2354346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a810bfe6563d6b7cf6c92b20d125496f7cfc54e77a412563ca3e20e3a1f1a. 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/QZGLM2349759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312ba03b9202c808a8e4c5a09286b5289a61bd30a8db042e05478bbe4fdf7d78. 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/BX4IU2304316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebebcd03a72aadcf86ba0a307e337fad6e886e68d89989881f066bf1602b6475. 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/BC3PG2303209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa469053f90251d7b78e3d87305c1e17227d2358f2225856b0115e6f8ee8bbb63. 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/BCIH82202626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b0f29e28560620f59082503de4e8efc0bce07cd8cf6ca25c70dc1534f9b056. 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/BX4IU2504329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33c522fbfe6efb0f698a8cd0fce4ee3a2fec80eed291062587d89805c46d075. 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/BX4IU2504015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bd77cbb64098fdb8d41564a180f3fc49b2190da98c13c55a5601e53f69dccf. 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/GXBAV2555251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45baab61174248682ea6cd67dce57b9a82a8ee6e6f725afbd843e35cd92d669c. 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/BX4IU2420874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9ca94d12e5ea1a478e667071ebf552c2e982492071a688146cc806af4fa856. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTPX2469441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6739e3e32f12fdac09b9ea9e51049e6c1c04ba05fae0690d0313a18ef4a2829a. 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/BC3PG2402308.